2015 maize for silage | central hawke’s bay, lower north island, taranaki & south island central hawke’s bay, lower north island, taranaki & south island RIGHT PRODUCT RIGHT PADDOCK MAIZE FOR SILAGE PIONEER ® BRAND hybrid performance INFORMATION 2015
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2015 maize for silage | central hawke’s bay, lower north island, taranaki & south island
central hawke’s bay, lower north island, taranaki & south island
RIGHT PRODUCT RIGHT PADDOCK
MAIZE FOR SILAGE PIONEER® BRAND
hybrid performance INFORMATION 2015
Rotorua / Reporoa / Taupo / Central Taranaki / Southern Hawke’s Bay / Northern Wairarapa / Horowhenua
REGION 4
Nelson / MarlboroughNorth & Mid Canterbury
REGION 5
South Canterbury / West Coast
REGION 6
North Otago / Southland
REGION 7
Hybrid Options for your Region
South Waikato / King Country /Coastal Taranaki / Rangitikei / Manawatu / Southern Wairarapa / Central Hawke’s Bay
REGION 3
Hybrid maturity is based on heat unit accumulation through the season. Hybrids will therefore be quicker to harvest in warmer regions or warmer seasons. For example, a hybrid planted in coastal Bay of Plenty will be ready for harvesting much earlier than the same hybrid planted on the same day in Central Taranaki due to the faster accumulation of heat units in the Bay of Plenty environment. This has important implications for hybrid selection. The table above is a guide as to the estimated days from planting to harvest for Pioneer® brand hybrids in the regions for which they are recommended for silage. This information is generated from silage hybrid trials carried out in these regions over several seasons.
NOTES
Hybrids MaturityEstimated days from planting to harvest
39V43 117 - 132
P7524 119 - 134
39G12 124 - 138
39F58 130 - 144
P8805 132 - 146
38V12 136 - 151
P9400 140 - 154
37Y12 141 - 155
P9721 144 - 156
P9911 145 - 159
P0021 145 - 159
35A30 149 - 161
VS
S
M
F
39V43 125 - 140
P7524 127 - 142
39G12 132 - 147
39F58 138 - 153
P8805 140 - 155
38V12 147 - 161
P9400 149 - 163
37Y12 149 - 164
P9721 150 - 165
P9911 153 - 168
P0021 153 - 168
VS
S
M
F
Hybrids MaturityEstimated days from planting to harvest Hybrids Maturity
Estimated days from planting to harvest
39V43 141 - 155
P7524 144 - 157
39G12 146 - 160
39T45 151 - 165
P8805 153 - 167
38V12 158 - 172
P9400 161 - 176
S
M
VS
F
Hybrids MaturityEstimated days from planting to harvest
39V43 145 - 159
P7524 148 - 162
39G12 150 - 164
39T45 155 - 169
39F58 155 - 169
P8805 157 - 171
S
M
F
Hybrids MaturityEstimated days from planting to harvest
39V43 149 - 163
P7524 152 - 166
39G12 154 - 168
S
M
F
US = Ultra short VS = Very short S = Short M = Mid F = Full VL = Very long
MATURITY KEY
Pioneer® Brand Maize For Silage Hybrid Trait Characteristics
RATINGS: 9 = Outstanding 1 = Poor - = Insufficient data available = New hybrid NR = Not recommended
1 Silage comparative relative maturity (CRM): Pioneer silage CRM ratings provide a comparison between Pioneer hybrids indicating the relative rates at which hybrids reach harvestable whole plant drymatter. They do not represent actual calendar days from planting to harvest.
2 Yield for maturity: Hybrid comparisons should only be made within a range of + or – 4 CRM. Analysis of differences in harvest drymatter percentages between hybrids measured in our New Zealand forage research programme show products compared within + or – 4 CRM will reach ideal silage harvest maturity (defined as 32% - 38% DM) within about seven days of each other.
3 Adaptability to high population: A measure of the mix of genetic factors that permit a maize plant to withstand the stresses of high population and still give good standability and high yields.
4 Adaptability to low population: An indicator of a hybrid’s ability to compensate (flex) cob size for stand loss from insect damage or poor emergence.
5 Early growth: Ratings are taken when two leaf collars are visible.
6 Plant height: 9 = Tall. 1 = Short.
7 Staygreen: A measure of late season plant health. A lower score also means that the plant stover loses colour and dries down more rapidly at maturity.
8 Whole plant digestibility: Based on estimated 24 hour in vitro, whole plant digestibility percentage (DM basis) as predicted by Near Infrared Reflectance Spectroscopy (NIRS).
9 Fibre digestibility: Based on 24 hour enzymatic estimate of the proportion of degradable neutral detergent fibre (NDF) as a percentage of the total NDF in whole plant sample, predicted by NIRS.
10 Silage crude protein: Based on the amount of crude protein in the whole plant, predicted by NIRS.
11 Readily available energy (RAE): Based on total starch, sugar and oil content of hybrids harvested at silage maturity. Use this score as a relative comparison of the whole plant concentration of more readily available energy (primarily grain) among individual hybrids.
12 Northern Leaf Blight (NLB) and Eyespot: Caution: In conditions where NLB and Eyespot risks are high, growers should only consider planting hybrids with at least moderate resistance ratings of 5 or higher for these diseases.
13 Hybrid disease resistance ratings: 8 to 9 = Highly resistant. 6 to 7 = Resistant. 4 to 5 = Moderately resistant. 1 to 3 = Susceptible. - = Insufficient data.
Common Rust ratings are mostly based on United States and European data as the New Zealand database is usually too small to give a statistically valid rating. Eyespot and NLB ratings are based on overseas data together with New Zealand observations. Scores are based on visual assessment only and not on yield reduction data.
14 Cool environments: In cool environments, including high altitude sites greater than approximately 150 m / 500 ft above sea level, select your yield environment using the descriptions in note 17, then increase established plant populations to the next level i.e.for P0791 in a medium yield environment at high altitude, plant to achieve 108,000 established plants per hectare.
15 Established plant populations: These assume good seed establishment conditions. If you are planting very early or into a less than ideal seedbed or where insect pressure may be high (e.g. a shorter than optimum fallow period), plant populations may need to be increased to compensate for reduced establishment due to field losses.
16 Plant populations: The tabulated established populations are recommendations only. Work with your local Pioneer Representative or Merchant Seed Representative to determine the appropriate plant populations for your specific growing environment.
17 Growing environment definitions: May include some or all of the following characteristics:
Challenging yield environments (CYE) Typically light, sandy or shallow soils of low fertility, low moisture retention, and predictably
low summer rainfall (drought-prone environments). High cob or leaf disease pressure.
Medium yield environments (MYE) Average fertility soils with predictably adequate
summer rainfall and good moisture retention. Continuously cropped soils. Medium to low cob or leaf disease pressure. Recommended for new maize growers.
High yield environments (HYE) Typically deeper, highly fertile and well structured soils with good moisture retention. Predictably good summer rainfall, shelter from high wind run. Good soils straight out of long term pasture. Low or no cob or leaf disease pressure.
Page 1RIGHT PRODUCT. RIGHT PADDOCK.sm
CookStrait
TasmanBay
Golden Bay
Hawke Bay
NelsonBlenheim
Hawera
Porirua
Castlecliff
Upper Hutt
Wanganui
PalmerstonNorth
Masterton
Taihape
Taupo
WaipawaHastings
Napier
GisborneNew Plymouth
Wellington
Ararata
Awakino
MahiMohaka
Ohakune
Pongaroa
Porangahau
Rahotu
waka
TahoraTuai
Tutira
Wairoa
Waitaanga
akefield
pper Huttppppepperpepe HH
merstoononPalmmeNorthort
Mastertonte
ngtoningtngt
PongaroaPPoPoPoPo
PorangahauPoraPora
Westland
Canterbury
Southland
Otago
Nelson-Marlborough
Wellington
S o u t hI s l a n d
CookStrait
Pegasus Bay
Canterbury Bight
Foveaux Strait
TasmanBay
Golden Bay
Gore
Oamaru
NelsonBlenheim
Porirua Upper Hutt
North
Masterton
Christchurch
Dunedin
Greymouth
Invercargill
Timaru
WestportWellington
StewartIsland
Ahaura
Akaroa
Alexandra
Bluff
Cheviot
Clyde
Cromwell
Fairlie
Glenavy
Granity
Haast
Halfmoon Bay
Hampden
HarihariHawarden
Heriot
Hinds
HokitikaKaikoura
Kaitangata
Kurow
LumsdenManapouri
Methven
Milton
Morven
OhaiOtautau
Otematata
Otira
Owaka
Palmerston
PongaroaPorangahau
Rakaia
Reefton
Riversdale
Riwaka
Rockville
Ross
Roxburgh
Sefton
Tapanui
Te Anau
Templeton
Temuka
Tuatapere
Waiau
Waikawa
Waikouaiti
Wakefield
Wanaka
Ward
Whataroa
2015 silage trial locationsLOWER NORTH ISLAND & Taranaki: 72 trials south island: 47 trials
You’re just around the corner so we trial just down the road.
= Pioneer silage trial location
Page 2
Westland
Southland
Otago
Wellington
CookStrait
Pegasus Bay
Canterbury Bight
Foveaux Strait
Tasman
Bay
Golden Bay
Kaipara Harbour Bay of Islands
Doubtless Bay
HaurakiGulf
HawkeBay
Bay of Plenty
Gore
Oamaru
Nelson
Dargaville
Blenheim
Hikurangi
Hawera Waiuku
Porirua
Castlecliff
Upper Hutt
Wanganui
TeKuiti
Te Awamutu
Palmerston
North
Masterton
Paeroa
Taihape
Whangam
ata
Taupo
Waipawa
HastingsNapier
Opotiki
Gisborne
Christchurch
Dunedin
Greymouth
Hamilton
Invercargill
Rotorua
Timaru
New Plymouth
Westport
Auckland
Wellington
StewartIsland
Ahaura
Ahipara
Akaroa
Alexandra
Aorangi
Ararata
Awakino
Bluff
Cheviot
Clyde
Colville
Cromwell
Fairlie
Glenavy
Granity
Haast
Hahei
Halfmoon Bay
Hampden
Harihari
Hawarden
Heriot
Hicks Bay
Hinds
Hokitika
Houhora
Huntly
Kaihu
Kaikoura
Kaitangata
Kuaotunu
Kurow
Lumsden
Mahia
Maketu
Manapouri
Mangawhai
Matapouri
Methven
Milton
Mitim
iti
Mohaka
Morven
Motu
Muriwai
Ohai
Ohakune
Orini
Otautau
Otematata
Otira
Owaka
Palmerston
PongaroaPorangahau
Port JacksonPouto
Punaruku
Rahotu
Rakaia
Reefton
Rehia
Riversdale
Riwaka
Rockville
Ross
Roxburgh
Ruapuke
Sefton
Tahora
Takahue
Tapanui
Tauhoa
Taurikura
Te Anau
Te Kaha
Te Kao
Te Ngaire
Te Paki
Templeton
Temuka
Thornton
Tihoi
TikitikiTokomaru Bay
Tolaga Bay
Tuai
Tuatapere
Tuparoa
Tutira
Waiau
Waikawa
Waikouaiti
Waiotapu
Wairoa
Waitaanga
Wakefield
Wanaka
Ward
Whataroa
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Page 3RIGHT PRODUCT. RIGHT PADDOCK.sm
Long term commitment delivers higher yields 5Optimum Aquamax® 6Hybrids to watch out for 7New Zealand maize research programme 8Hybrid evaluation programme 9Maize Silage growing regions 10Trial results, side-by-side comparisons and statistical significance 11Interpretation of t-test stars for hybrid side-by-side yield comparisons 12Selecting the best hybrid – trial numbers are important 13Interpretation of the hybrid comparison result table 14Regression analysis 15Milk profit calculation 16
lower north island & taranaki PAIRED SILAGE COMPARISONS Comparison index Lower North Island & Taranaki 18
Pioneer Research Stations resultsNew Plymouth 50 Individual Farmer trial results Bolton, Ross 51Bourke, Eddie 51Butler, Allan 51Campbell, Ben (Rusty) 51Christie, Dallis 51Dalrymple, Hew 51Dowdle, Paul 52Dravitzki, Karl 52
Funnell, Kristian 52Geary, Alistair 52Goodin, Tom & Lyn 52Grace, Chris 52Gray, Phil 53Gwynn, David 53Haigh, Doug 53Handyside, Rupert 53Judd, Walter 53Jury, David 53Kershaw, Richard 54Kissick, Bede 54Knowles, Chris & Stevens, Amy 54Lynskey, Craig & Kim 54Malcolm, David 54Mathis, Steve 54Patrick, William 55Penwarden, Tony 55PKW Incorporation (Shane Miles) 55Poole, Robert & Clare 55Powell, Martin 55Quinn, John 55Rawai Agriculture Limited (Richard Dakins) 56Sims, Robert 56Smith, Marcus 56Sorensen, Maurice & Linda 56Spiers, Ian 56Sutherland, Toby 56Taylor, Aaron 57Wall, Matthew 57
Washer, Greg 57Weir, John & Roslyn 57Williamson, Ian 57
SOUTH ISLAND PAIRED SILAGE COMPARISONS Comparison index South Island 60
Pioneer Research Stations results Ashburton 73
Individual Farmer trial results Carey, Mark & Anne 74Chapman, John 74Dobbs, Lionel & Janine 74Five Star Beef Ltd 74-75Flintoft, Peter & Amanda 75Kingsbury, Robin 75Leadley, Paul 75McCully, Barry 75McFadden Alistair 75Molloy, Phil 76Morrison, Nigel 76Stone, Murray 76Van Leeuwen Dairy Group (Aad van Leeuwen) 76Von Ah, Marty & Nicky 77Wai-iti Fresh (Peter McCracken) 77Yeatman Farms (Julian & Karla Yeatman) 77-78 Thank you to the 2014/2015 Trial Co-operators 79
contents
Page 4
Page 5RIGHT PRODUCT. RIGHT PADDOCK.sm
For more than 80 years Pioneer breeders have improved the agronomy, disease resistance and yield of commercially available maize hybrids. The annual rate of silage yield gain in New Zealand is estimated to have been over 300 kilograms of drymatter per hectare per year over the last 50 years, as shown in the graph below. While crop management (e.g. planting date, nutrient balancing, weed control, precision agriculture and harvest timing) has made a significant contribution to yield increases, the largest slice is due to the breeding of both more defensive and higher yielding hybrids. As a result, a newly introduced Pioneer hybrid will have a considerable yield advantage over older hybrids.
Source: New Zealand Year Book and Pioneer® brand products New Zealand Research Programme.
To maximise their returns, silage growers should look to introduce new hybrids that are best suited to their farm system on a regular basis. Desired harvest timing, soil type, cultivation methods, agronomic traits such as early growth, drought tolerance, stalk and root strength, disease resistances and silage quality are all important considerations in the hybrid selection process.
The most reliable way to select superior hybrids is to consider yield and quality performance information, gathered over several seasons and over a wide range of locations within a growing region. Individual on-farm trial results should not be used to select a hybrid because they are not a reliable predictor of hybrid performance in future seasons. A useful rule of thumb is that at least 20 locations of data are required to provide adequate comparative yield performance information. This data should then be statistically analysed to establish the quality of the data and if there are any real yield differences between the hybrids being compared.
This publication provides a summary of the investment made to evaluate the silage yield performance of Pioneer® brand products and other brands of silage hybrids in five defined growing regions in New Zealand (see map on page 10).
It is Pioneer’s policy to only publish statistically significant results when comparing a Pioneer hybrid with that of another brand (please see page 12 for more information). As a result, we do not make any hybrid comparison inferences based on only a few trials. Consequently, comparisons involving new hybrids may take several seasons to generate sufficient data to publish.
long term commitment delivers higher yields
New Zealand Silage Yield Trend 1961 to 2014
1961
1965
1969
1973
1977
1981
1985
1989
1993
1997
2001
2005
2009
2013
Yiel
d (tD
M/h
a)
0
5
10
15
20
25
30
Year
Page 6
Optimum Aquamax® hybrids are exciting new products that offer growers additional choices to help minimise risk and maximise crop productivity under drought stress.
Developed and tested utilising Pioneer’s extensive drought technology research and proprietary Accelerated Yield Technology (AYT™) system, Optimum Aquamax® hybrids help deliver a yield advantage in water-limited environments.
Simply stated Optimum Aquamax® hybrids:
Maximise water access through an extended rooting system.
Help minimise the risk of decreased yields due to drought stress.
Deliver yield stability even in dry seasons.
MORE OUT OF EVERY DROP
TOUGH FROM TASSEL TO ROOT
EQUIPPED WITH STRONG AGRONOMICS
BETTER STAYGREEN LENGTHENS WINDOW
OF OPPORTUNITY FOR GROWTH
for more efficient use of water
ADVANCED STOMATA CONTROL
for improved kernel set
AgGRESSIVE SILKING
maintain yield under late season water stress
DEEPER KERNELS
captures deep soil moisture
EFFICIENT ROOT SYSTEM
USE LESS WATER PER KILOGRAM
of yield
drought susceptible hybrid Optimum Aquamax® hybridPioneer Optimum Aquamax® drought-tolerant hybrid (right) vs. a susceptible hybrid (left) grown side by side in a drought environment.
Page 7RIGHT PRODUCT. RIGHT PADDOCK.sm
New for spring 2015, P0725 is an Optimum AQUAmax® hybrid delivering impressive performance with extraordinary yield consistency for silage and grain in all warmer northern production regions.
The Optimum AQUAmax® range now includes P9911, P0791 and P0725. The drought tolerance in these hybrids provides resilience when it’s dry and yield responsiveness under favourable growing conditions. P0791 is now a popular choice in northern growing regions as a result of its exceptional staygreen and ability to “hang in” when it’s hot and dry. P9911 certainly caught the eye and delivered in water limited situations in its first commercial season.
The following hybrids that were extensively grown for the first time during 2014/2015 have all performed to expectation during a very challenging season. They merit further consideration for more extensive planting in spring 2015.
P7524: Intermediate in maturity between 39V43 and 39G12. A great option for growers in cooler high latitude or high altitude growing environments.
P8805: Intermediate in maturity between 39T45 and 38V12. A tough yet top yielding hybrid for silage and grain that has excellent all round agronomics and a balanced disease profile.
P9721: Similar to 37Y12 but delivers higher silage and grain yield. A great all-round balanced package of agronomic traits with wide adaptability.
P9911: A key maturity option in the Optimum AQUAmax® range delivering great drought tolerance. An impressive all-round hybrid with top agronomics and a sound disease package. Combines the best of bulk and energy for maximum milk productivity.
P1636: Combines impressive agronomics, drought tolerance and provides a wide harvest window. Similar in type and maturity to 33M54 and is particularly adapted to Northland, Waikato and Bay of Plenty.
All new Pioneer hybrids have been extensively tested and offer performance advantages over similar established hybrids.
We recommend this publication be used in conjunction with the Pioneer® brand Maize for Silage 2015/2016 catalogue and the expertise provided by Pioneer, as well as your local Merchant Representatives.
hybrids to watch out for
Page 8
Pioneer Hi-Bred International Global Breeding Programme Thousands of new hybrids evaluated each year.
New Zealand Maize Silage Hybrid Evaluation Programme
IMPACT trials test up to 100 experimental and commercial hybrids. The best new hybrids are advanced for PAT testing in the next season.
PAT trials evaluate the best new hybrids grown side-by-side with existing commercial hybrids in on-farm strip trials.
Side-by-side trial data collected from at least 20 locations, over several seasons, within a growing region, is pooled to create an average yield result for the two hybrids.
A t-test analysis is used to calculate the statistical significance of the measured, pooled side-by-side yield result. Statistical significance is indicated by significance stars.
New Zealand Maize Silage Grower 22 tried and tested high yielding maize silage hybrids available to local growers in spring 2015.
New zealand maize research programmE
Page 9RIGHT PRODUCT. RIGHT PADDOCK.sm
The 2014-15 season was characterised by generally cool early spring conditions. This resulted in slow growth through to mid-December. However, the late December to February period was considered hot and dry. This accelerated crop development resulting in a well set crop in mid-January. Limited rain delivered water stress during the all-important grain-fill period.
The trial yield results reported in this publication range from poor to exceptional. The exceptional crops often trace back to optimum planting dates into paddocks of good water holding capacity and with the application of the best agronomic practices, overlaid with sufficient rain and heat to grow the crop. Later planted crops were even more impacted by the dry conditions during critical development stages.
Pioneer® brand products’ ongoing commitment to sourcing and effective testing of hybrids in New Zealand provides growers with the opportunity to maximise maize silage yield and quality. The IMPACT™ trials (Intensively Managed Product Advancement, Characterisation and Training trials) together with the PAT (Product Advancement Trials) testing programme marks a unique team effort between research, sales, growers and contractors.
IMPACT™, or replicated small plot trials, provide local testing of up to 100 hybrids. The best experimental hybrids are advanced to strip or PAT trials for further and more extensive testing the next season. The silage PAT’s only evaluate 6 to 8 hybrids at a time but are over a wider geographic spread in growing regions where the new hybrid is expected to have a performance advantage over existing commercial hybrids.
The IMPACT™ programme is an advanced method for evaluating maize hybrids in replicated research plots. These trials are planted using specialised pneumatic 4-row research plot planters with GPS guidance for increased accuracy and precision in a range of environments with different soil types, weather and disease pressures. As the name implies, they benefit from intensive management, close observation and evaluation throughout the growing season. At the end of the growing season, specialist forage harvesters measure hybrid yield as the plots are being harvested.
The geographical spread of IMPACT™ trials is enabled by the availability of equipment transporters facilitating these trials at locations from Waikato, to the Lower North Island and for the first time this season the South Island.
Together, these trials funnel local information into the product commercialisation decision making process. It allows Pioneer® brand products to bring proven, industry-leading maize genetics to the New Zealand market and to understand which products offer the best performance in each growing region. As a result, specific customer needs can be more readily targeted and in doing so, the grower will experience the benefit of our “Right Product, Right Paddock” strategy.
The aim of the trial programme is to identify the best maize hybrids for New Zealand growing conditions. We achieve this through the combination of comprehensive field observation, as well as rigorous data evaluation and statistical analysis of the results generated, as shown in the flow chart above.
2014-15 Growing Season
IMPACT™ and PAT’s effectively test and deliver new commercial hybrids
hybrid evaluation programme
Page 10
Growing regions used for data summary and hybrid performance reporting:
1. Northland & South Auckland
2. Waikato
3. Bay of Plenty, Gisborne & Northern Hawke’s Bay
4. Central Hawke’s Bay, Lower North Island & Taranaki
5. South Island
MAIZE SILAGE growing regions
The most reliable way to select superior hybrids is to consider yield and quality performance information, gathered over several seasons from a range of locations within a growing region. Individual on-farm trial results should not be used to select a hybrid because they are not a reliable predictor of hybrid performance in future seasons. A useful rule of thumb is that 20 locations of data are required to provide adequate comparative yield performance information. This data should then be statistically analysed to establish the quality of the data and to establish if there are any real differences between hybrids being compared.
Page 11RIGHT PRODUCT. RIGHT PADDOCK.sm
Trial results
In order to ensure accuracy in trial planting, in-season note taking, plot harvest, field-weighing and silage drymatter determination, the Pioneer Field Technicians follow ISO 9001:2008 approved best practice procedures. All farmer trial co-operators receive a copy of their individual results. This information represents the outcome of comparing hybrids included in that one environment, in that particular season and under the management practice employed by the grower.
The results of IMPACT™ trials have not been published, as most hybrids are only experimental they will not be tested again and as a result are not of direct interest to the maize growing community.
When using trial results, it is essential that the overall performance of a hybrid over several seasons and sites in your growing region is considered, as this is more likely to be a robust and stable indicator of future performance in your paddock.
Side-by-side comparisons
In a valid side-by-side comparison, two hybrids similar in maturity are planted side-by-side in the same paddock according to strict scientific protocols. At harvest, crop yield, drymatter and nutritional characteristics are measured. This allows the performance of the two hybrids to be compared under the same growing conditions. Side-by-side trial data collected from a number of locations over several seasons, within defined growing regions, is pooled to create an average side-by-side yield result for the two hybrids.
A statistical analysis (called a t-test) is used to calculate the statistical significance of the measured, pooled, side-by-side yield result. This may sound complicated but statistical significance, indicated by significance stars ( ), simply shows how likely the measured average of the side-by-side yield difference is, due to an actual genetic yield difference between the two hybrids, rather than just chance. In other words we are essentially asking:
“Based on the data, are these two hybrids the same or different for yield?”
TRIAL RESULTS, SIDE-BY-SIDE COMPARISONS and statistical significance
Pioneer research chopper harvesting a maize silage trial
Page 12
Interpretation of the t-test stars ( ) for hybrid side-by-side yield comparisons
Where a result is commercially acceptable (CA), the result is not designated as statistically significant, but it may be regarded as commercially acceptable.
Where a result is not significant (NS), we cannot conclude there is a yield difference between the hybrids. There are two principle implications;
1. Where the yields are very similar, and the comparison has been made over more than 20 locations, no significance may indicate there is little measurable difference between the two hybrids (i.e. they yield about the same) or;
2. Where there appears to be a yield difference, no significance will generally indicate there are too few trial locations involved, or there have been inconsistent
or fluctuating results. It is therefore, not possible to confidently indicate whether the difference is real. In this instance, growers should use the important hybrid trait ratings to select which hybrid to plant. On the other hand, yields may appear to be very similar but still achieve significance – this happens in cases where yield variations are small and the number of trial locations is large.
A t-test analysis of statistical significance is now carried out on all Pioneer side-by-side comparisons and we take great care to base our product yield statements on the outcome.
The table below presents a summary of the possible t-test outcomes.
The more stars ( ) present for the comparison, the more confident we can be that the measured average side-by-side yield difference is due to an actual genetic yield difference between the two hybrids rather than just chance.
INTERPRETATION OF PAIRED COMPARISONS Where stars are shown below each comparison, this indicates the level of confidence that a real yield difference actually exists
between two hybrids based on the yield data. Yield superiority can only be concluded where one to three stars are present.
P VALUE CONFIDENCE LEVEL
SCIENTIFIC DESIGNATION
LEVEL OF SIGNIFICANCE
YIELD ADVANTAGE INTERPRETATION
<0.001 >99.9% Very highly significant YES
Product superiority for yield can be claimed. Can confidently plant a product providing no key agronomic traits are limiting, and/or if a key trait advantage exists. Check the trait ratings for any considerations.
<0.01 >99.0% Highly significant YES
<0.05 >95.0% Significant YES
<0.10 >90.0% CA Commercially Acceptable YES Not a significant result, but may be regarded as a
commercially acceptable basis for a decision.
>0.10 <90.0% NS Not significant NOProduct superiority for yield cannot be claimed. Ignore the yield comparison and refer primarily to trait ratings to select between products.
Page 13RIGHT PRODUCT. RIGHT PADDOCK.sm
SELECTING THE BEST HYBRID – TRIAL NUMBERS ARE IMPORTANT
Page 9
SELECTING THE BEST HYBRID – TRIAL NUMBERS ARE IMPORTANT Another way of interpreting side-by-side comparisons is to assess the probability of selecting the right hybrid based on the data. The two key factors which improve the probability of selecting the right hybrid from the comparison are the number of locations involved and the size of the measured yield difference.
The table below presents the probability of selecting the right hybrid from a series of side-by-side comparisons based on these two factors.
Probability of correctly selecting the better hybrid in a silage hybrid side-by-side comparison given a specified number of trials and the measured yield difference.
Number ofTrials
Measured Yield Difference (kilograms of grain per hectare)
250 500 750 10001 57.6% 63.1% 69.1% 74.8%10 70.1% 85.4% 94.3% 98.2%25 79.8% 95.2% 99.4% >99.9%50 88.1% 99.1% >99.9% >99.9%Standard deviation of the yield difference is assumed to be 1,500 kgDM/ha.
Simply stated the reason we’ve strongly emphasised the importance of using multi-location data for the comparison of interest is that it is the best and most practical way of increasing your chance of selecting the highest performing hybrid.
For example where a hybrid has a yield advantage of 500 kg of drymatter per hectare – 10 trials of yield data gives a probability of 63.1% of choosing the higher yielding hybrid. This rises to 95.2% with 25 trial comparisons.
This is the tool that Pioneer® brand products uses to help growers make thebest hybrid choices. We use paired comparisons, over as many paddocks as possible, within the growing region and area of adaptation of the two hybrids. This generates data which gives growers the highest probability of selecting the winning hybrid.
The table also shows that it takes fewer locations to confidently identify superior hybrids with large yield advantages, than when searching for small differences.
The table on the next page shows the format in which the analysis is presented in this publication.
Two key factors which influence the probability of selecting the best hybrid from the comparison are the number of locations involved and the size of the measured yield difference.
Another way of interpreting side-by-side comparisons is to assess the probability of selecting the best hybrid based on the data. The table below shows how the probability of selecting the winning hybrid from a series of side-by-side comparisons is influenced by these two factors.
Probability of correctly selecting the better hybrid in a silage hybrid side-by-side comparison given a specified number of trials and the measured yield difference.
Standard deviation of the yield difference is assumed to be 1,500 kgDM/ha.
The reason we’ve strongly emphasised the importance of using multi-location data for the comparison of interest is that it is the best and most practical way of increasing your chance of selecting the highest yielding hybrid.
For example where a hybrid has a yield advantage of 500 kg of drymatter per hectare – the yield data from one trial gives a probability of 63.1% of choosing the higher yielding hybrid. This rises to 95.2% with 25 trial comparisons.
This is the tool that Pioneer® brand products use to help growers make the best hybrid choices. We use paired comparisons, over as many paddocks as possible, within the growing region and area of adaptation of the two hybrids. This generates data which gives growers the highest probability of selecting the winning hybrid.
The table also shows that it takes fewer locations to confidently identify superior hybrids with large measured yield advantages.
The table on the next page shows the format in which the analysis is presented in this publication.
(kilograms of drymatter per hectare)
Page 14
The table indicates;
• The hybrids being compared (P9400 and 37Y12)
• The number of seasons of data included (6)
• The total number of comparisons made between the two hybrids (42)
• Average harvest drymatter for each hybrid (37.5% and 36.7%)
• The yield advantage in kgDM/ha (1631)
• The milk profit advantage per hectare ($774)
• The level of statistical significance as explained on page 12.
Comparisons are calculated based on trials where the hybrids were planted in the same strip trial.
The milk profit advantage reported relates to the potential value of milksolids produced from the reported drymatter yield advantage. Please refer to page 16 for the assumptions used in this calculation.
Interpretation of the hybrid comparison result tableP9400 compared with 37Y12 for silage.
P9400 outyields 37Y12 (probability < 0.001). This is a very highly significant result. Hybrid superiority for yield is shown. Plant the "winning hybrid" with a very high level of confidence, but also consult the trait ratings.
Stars denote the significance level of this comparison and are not intended to be a
product recommendation
!
Page 15RIGHT PRODUCT. RIGHT PADDOCK.sm
regression analysisThe regression analysis is used to describe the relationship between the yields of two hybrids, compared to the trial average yield in a series of trials where the two hybrids were grown together.
The regression graph below is made up by a number of important components;
The coefficient of determination (R2): This represents the proportion of the data that is explained by the lines of best fit. The higher the R2 the more confidence we have in the lines of best fit. If the R2 was 1.00 the yield line would perfectly describe the hybrid yield response and every data point would fall on this line.
The graph is plotted against the x and y axis where;
X axis = trial average yield (in kilograms of drymatter per hectare) which is the average yield of all hybrids in the trial. This is a measure of the environmental potential.
Y axis = yield (kilograms of drymatter per hectare) of the individual hybrid.
Along each axis the yield levels are indicated.
Each triangle or square symbol indicates an individual trial yield.
The hybrid regression line: The hybrid regression line characterises the expected yield performance of the hybrid presented as the average yield level changes from low to high. The regression lines of the two hybrids presented indicate the relative performance of each hybrid over the range of yield levels represented.
It is important not to extend hybrid recommendations beyond the boundaries of data points plotted on the graph. The regression is only accurate over the range of available trial yields.
Trial Average Yield Kilograms of Drymatter per Hectare
Each triangle or square indicates a trial result for the indicated hybrid. The lines of "best fit" show the relative performance of each hybrid. Each triangle or square indicates a trial result for the indicated hybrid. The lines of “best fit” show the relative performance of each hybrid.
Page 16
MILK PROFIT CALCULATION
Hybrids summarised in this publication use the following equations to calculate milk profit ($/ha):
Milk Profit = Milksolids Yield/ha x Milk Payout - Silage Production Costs/ha *
Where Milksolids Yield/ha = Silage Yield (kgDM/ha) x 100 g Milksolids per kgDM fed
Milk Payout is based on an expected milksolids payout of $4.75/kg as announced by Fonterra on 30 April 2015
* A detailed listing of the cost for last season’s production was published in the Pioneer® Maize Silage 2014/2015 catalogue.
Page 17
Maize silage hybrid comparisons for all years cumulative up to 2015 harvest
LOWER NORTH ISLAND & TARANAKI PAIRED SILAGE COMPARISONS OF PIONEER® BRAND MAIZE HYBRIDS
Page 18
COMPARISON INDEX FOR LOWER NORTH ISLAND & TARANAKI
P8805 outyields P9400 (probability < 0.05). This is a significant result.
Hybrid superiority for yield is shown.
Confidently plant the "winning hybrid", but also consult the trait ratings.
Star denotes the significance
level of this comparison and is
not intended to be a product
recommendation
P8805 R² = 0.674
P9400 R² = 0.7678
13000
15000
17000
19000
21000
23000
25000
27000
29000
16000 18000 20000 22000 24000 26000
Yie
ld K
ilogr
ams
pe
r H
ect
are
Trial Average Yield Kilograms per Hectare
P8805
P9400
Linear P8805
Linear P9400
Each triangle or square indicates a trial result for the indicated hybrid.
The lines of "best fit" show the relative performance of each hybrid.
PIONEER RESEARCH STATION TRIAL RESULTS: SOUTH ISLAND
Page 73
Pioneer Research Station (Ashburton)
- Trial 1
Location: ASHBURTON
Planting Date: 17/10/2014
Harvest Date: 31/03/2015
Days from planting to harvest: 165
Trial Altitude: 103 metres
Hybrid Drymatter
(%)
Yield
(tDM/ha)
39V43 35.0 21.94
P7524 34.5 21.51
P7500 30.9 20.92
P7631 31.8 20.68
P8105 34.1 19.94
X75D326 31.5 18.29
Average 33.0 20.5
Pioneer Research Station (Ashburton)
- Trial 2
Location: ASHBURTON
Planting Date: 17/10/2014
Harvest Date: 17/04/2015
Days from planting to harvest: 182
Trial Altitude: 103 metres
Hybrid Drymatter
(%)
Yield
(tDM/ha)
39T45 36.4 26.01
P8589 32.9 22.69
P8805 35.8 22.59
P8284 32.8 22.27
P8644 31.1 21.09
P8450 34.0 20.50
Average 33.8 22.5
Pioneer Research Station (Ashburton)
- Trial 3
Location: ASHBURTON
Planting Date: 17/10/2014
Harvest Date: 29/04/2015
Days from planting to harvest: 194
Trial Altitude: 103 metres
Hybrid Drymatter
(%)
Yield
(tDM/ha)
P7843 41.5 20.79
P8192 42.8 20.61
P8000 40.2 20.38
X80C888 46.4 19.62
39G12 40.7 19.57
P7892 44.6 17.66
Average 42.7 19.8
Pioneer Research Station (Ashburton)
- Trial 4
Location: ASHBURTON
Planting Date: 17/10/2014
Harvest Date: 29/04/2015
Days from planting to harvest: 194
Trial Altitude: 103 metres
Hybrid Drymatter
(%)
Yield
(tDM/ha)
38V12 38.6 19.87
P9027 39.6 19.85
P8805 38.8 19.50
P9400 37.6 19.15
P8745 39.7 17.98
39T45 41.9 17.61
Average 39.4 19.0
HYBRIDS LISTED WITH A SEVEN DIGIT NAME STARTING WITH X (E.G. X12X345) ARE ALL EXPERIMENTAL PIONEER HYBRIDS
WHICH ARE STILL BEING TESTED.
INDIVIDUAL FARMER TRIAL RESULTS: SOUTH ISLAND Page 74
Carey, Mark & Anne
Location: MOTUEKA
Planting Date: 11/11/2014
Harvest Date: 27/03/2015
Days from planting to harvest: 136
Trial Altitude: 5 metres
Hybrid Drymatter
(%)
Yield
(tDM/ha)
P9911 33.1 35.69
P9721 32.0 35.17
P0021 31.6 33.78
Average 32.2 34.9
Chapman, John
Location: ASHBURTON
Planting Date: 28/11/2014
Harvest Date: 24/04/2015
Days from planting to harvest: 147
Trial Altitude: 72 metres
Hybrid Drymatter
(%)
Yield
(tDM/ha)
P7524 27.1 13.06
X75D326 29.7 12.99
P8105 28.2 12.18
39V43 30.9 11.62
P7500 28.9 11.08
Average 28.9 12.2
Dobbs, Lionel & Janine
Location: ORARI
Planting Date: 3/10/2014
Harvest Date: 23/03/2015
Days from planting to harvest: 171
Trial Altitude: 78 metres
Hybrid Drymatter
(%)
Yield
(tDM/ha)
P8000 29.9 20.48
P7892 34.5 19.45
P7524 30.8 18.49
X80C888 29.9 17.99
P8192 30.6 17.47
39G12 28.7 17.27
P7843 30.5 14.37
Average 30.7 17.9
Five Star Beef Ltd - Trial 1
Location: WAKANUI
Planting Date: 9/10/2014
Harvest Date: 1/04/2015
Days from planting to harvest: 174
Trial Altitude: 36 metres
Hybrid Drymatter
(%)
Yield
(tDM/ha)
P8000 34.8 26.41
P7843 37.9 25.48
X80C888 39.3 25.03
P8192 40.0 24.46
P7892 39.3 23.01
Average 38.2 24.9
Five Star Beef Ltd - Trial 2
Location: WAKANUI
Planting Date: 9/10/2014
Harvest Date: 9/04/2015
Days from planting to harvest: 182
Trial Altitude: 36 metres
Hybrid Drymatter
(%)
Yield
(tDM/ha)
39T45 37.3 26.33
P8284 36.7 26.33
P8805 34.7 24.31
P8589 34.7 24.01
P8450 38.0 23.51
P8644 33.3 22.83
Average 35.8 24.6
Five Star Beef Ltd - Trial 3
Location: WAKANUI
Planting Date: 9/10/2014
Harvest Date: 26/03/2015
Days from planting to harvest: 168
Trial Altitude: 36 metres
Hybrid Drymatter
(%)
Yield
(tDM/ha)
P7500 36.2 27.13
P7631 37.0 26.85
P7524 39.0 24.76
P8105 38.5 23.68
X75D326 32.9 23.23
39V43 34.0 21.67
Average 36.3 24.6
INDIVIDUAL FARMER TRIAL RESULTS: SOUTH ISLAND
Page 75
Five Star Beef Ltd - Trial 4
Location: WAKANUI
Planting Date: 9/10/2014
Harvest Date: 14/04/2015
Days from planting to harvest: 187
Trial Altitude: 36 metres
Hybrid Drymatter
(%)
Yield
(tDM/ha)
39T45 41.7 28.71
38V12 35.6 28.57
P8805 37.8 26.08
P9027 37.5 25.92
P9400 34.5 24.35
P8745 38.6 23.65
Average 37.6 26.2
Flintoft, Peter & Amanda
Location: CULVERDEN
Planting Date: 31/10/2014
Harvest Date: 18/03/2015
Days from planting to harvest: 138
Trial Altitude: 189 metres
Hybrid Drymatter
(%)
Yield
(tDM/ha)
P7892 38.8 22.39
P8000 34.5 21.51
39G12 36.3 21.39
X80C888 35.3 20.11
P8192 35.6 19.52
P7843 31.5 18.98
Average 35.3 20.6
Kingsbury, Robin
Location: ASHBURTON
Planting Date: 22/10/2014
Harvest Date: 29/04/2015
Days from planting to harvest: 189
Trial Altitude: 39 metres
Hybrid Drymatter
(%)
Yield
(tDM/ha)
P9027 37.7 27.03
P8745 38.4 25.29
38V12 33.8 24.59
39T45 37.7 24.38
38H20 33.5 23.98
P8805 40.4 19.86
P9400 31.3 19.01
Average 36.1 23.4
Leadley, Paul
Location: ASHBURTON
Planting Date: 12/10/2014
Harvest Date: 16/04/2015
Days from planting to harvest: 186
Trial Altitude: 49 metres
Hybrid Drymatter
(%)
Yield
(tDM/ha)
38V12 37.3 27.77
P8805 38.3 26.41
P9400 37.6 25.24
38H20 37.1 24.92
39T45 39.7 24.69
P8745 42.6 24.59
Average 38.8 25.6
McCully, Barry
Location: TIMARU
Planting Date: 23/10/2014
Harvest Date: 14/04/2015
Days from planting to harvest: 173
Trial Altitude: 14 metres
Hybrid Drymatter
(%)
Yield
(tDM/ha)
39T45 36.7 26.49
39G12 38.8 24.72
P8805 36.5 24.69
P7524 41.9 24.64
39V43 42.7 21.95
Average 39.3 24.5
McFadden, Alistair
Location: HINDS
Planting Date: 15/10/2014
Harvest Date: 20/04/2015
Days from planting to harvest: 187
Trial Altitude: 146 metres
Hybrid Drymatter
(%)
Yield
(tDM/ha)
P8284 35.2 23.71
39T45 34.0 23.52
P8589 31.8 23.16
P8805 33.6 22.17
P8644 31.0 21.91
P8450 40.5 21.61
Average 34.4 22.7
HYBRIDS LISTED WITH A SEVEN DIGIT NAME STARTING WITH X (E.G. X12X345) ARE ALL EXPERIMENTAL PIONEER HYBRIDS
WHICH ARE STILL BEING TESTED.
INDIVIDUAL FARMER TRIAL RESULTS: SOUTH ISLAND Page 76
Molloy, Phil
Location: ASHBURTON
Planting Date: 13/10/2014
Harvest Date: 9/04/2015
Days from planting to harvest: 178
Trial Altitude: 42 metres
Hybrid Drymatter
(%)
Yield
(tDM/ha)
P8284 35.0 26.13
P8805 33.0 25.98
P8589 31.0 24.79
P8644 33.0 24.72
39T45 36.6 24.35
P8450 35.4 22.66
Average 34.0 24.8
Morrison, Nigel
Location: LINKWATER
Planting Date: 15/10/2014
Harvest Date: 14/03/2015
Days from planting to harvest: 150
Trial Altitude: 5 metres
Hybrid Drymatter
(%)
Yield
(tDM/ha)
P9400 41.3 29.04
P9027 45.7 27.68
P8805 47.0 27.10
38V12 41.6 26.70
39T45 47.4 23.83
P8745 46.9 23.36
Average 45.0 26.3
Stone, Murray - Trial 1
Location: CHRISTCHURCH
Planting Date: 1/11/2014
Harvest Date: 30/03/2015
Days from planting to harvest: 149
Trial Altitude: 13 metres
Hybrid Drymatter
(%)
Yield
(tDM/ha)
P7892 41.7 25.04
P8192 35.9 24.20
39G12 37.5 23.89
P7843 35.2 22.42
X80C888 37.7 22.17
P8000 35.1 20.05
Average 37.2 23.0
Stone, Murray - Trial 2
Location: CHRISTCHURCH
Planting Date: 1/11/2014
Harvest Date: 17/04/2015
Days from planting to harvest: 167
Trial Altitude: 13 metres
Hybrid Drymatter
(%)
Yield
(tDM/ha)
39T45 39.4 24.84
P8284 42.0 24.05
P8644 39.1 22.77
P8450 43.4 22.07
P8805 39.1 22.02
P8589 42.6 19.78
Average 40.9 22.6
Stone, Murray - Trial 3
Location: CHRISTCHURCH
Planting Date: 1/11/2014
Harvest Date: 17/04/2015
Days from planting to harvest: 167
Trial Altitude: 13 metres
Hybrid Drymatter
(%)
Yield
(tDM/ha)
38V12 40.2 27.63
39T45 42.1 26.45
P8805 38.3 25.45
P9400 33.8 21.68
P9027 40.5 21.14
P8745 38.4 19.43
Average 38.9 23.6
Van Leeuwen Dairy Group
(Aad van Leeuwen)
Location: MORVEN
Planting Date: 21/10/2014
Harvest Date: 14/04/2015
Days from planting to harvest: 175
Trial Altitude: 15 metres
Hybrid Drymatter
(%)
Yield
(tDM/ha)
P7524 35.7 20.95
X75D326 37.0 20.18
P7500 36.1 20.13
P8105 37.5 19.73
P7631 35.7 19.71
39V43 39.5 17.43
Average 36.9 19.7
INDIVIDUAL FARMER TRIAL RESULTS: SOUTH ISLAND
Page 77
von Ah, Marty & Nicky
Location:
Planting Date: 7/11/2014
Harvest Date: 15/04/2015
Days from planting to harvest: 159
Trial Altitude: 41 metres
Hybrid Drymatter
(%)
Yield
(tDM/ha)
P7524 36.0 29.18
P7500 36.6 27.23
39G12 33.3 27.20
P7631 37.3 26.11
39V43 37.4 25.01
X75D326 37.8 21.87
Average 36.4 26.1
Wai-iti Fresh (Peter McCracken) - Trial 1
Location: SWANNANOA
Planting Date: 22/10/2014
Harvest Date: 30/03/2015
Days from planting to harvest: 159
Trial Altitude: 62 metres
Hybrid Drymatter
(%)
Yield
(tDM/ha)
X75D326 40.3 19.42
39V43 36.5 18.78
P7631 32.2 18.30
P7524 33.5 18.21
P8105 34.0 16.54
Average 35.3 18.2
Wai-iti Fresh (Peter McCracken) - Trial 2
Location: SWANNANOA
Planting Date: 22/10/2014
Harvest Date: 2/04/2015
Days from planting to harvest: 162
Trial Altitude: 62 metres
Hybrid Drymatter
(%)
Yield
(tDM/ha)
P8000 37.3 21.22
P8192 37.0 19.38
X80C888 34.7 19.23
39G12 34.0 19.01
P7892 38.6 18.51
P7843 38.4 17.79
Average 36.7 19.2
Wai-iti Fresh (Peter McCracken) - Trial 3
Location: SWANNANOA
Planting Date: 22/10/2014
Harvest Date: 8/04/2015
Days from planting to harvest: 168
Trial Altitude: 62 metres
Hybrid Drymatter
(%)
Yield
(tDM/ha)
P8284 32.4 26.68
P8805 41.6 22.12
P8450 43.1 21.22
P8644 31.3 20.49
P8589 38.2 19.69
39T45 40.1 19.35
Average 37.8 21.6
Wai-iti Fresh (Peter McCracken) - Trial 4
Location: SWANNANOA
Planting Date: 22/10/2014
Harvest Date: 8/04/2015
Days from planting to harvest: 168
Trial Altitude: 62 metres
Hybrid Drymatter
(%)
Yield
(tDM/ha)
P8805 36.0 24.24
P8745 34.0 20.08
38V12 33.2 19.51
39T45 38.0 19.40
P9027 35.4 18.05
P9400 31.5 17.95
Average 34.7 19.9
Yeatman Farms (Julian & Karla Yeatman)
- Trial 1
Location: ASHBURTON
Planting Date: 20/10/2014
Harvest Date: 25/03/2015
Days from planting to harvest: 156
Trial Altitude: 47 metres
Hybrid Drymatter
(%)
Yield
(tDM/ha)
P7500 31.4 19.51
39V43 39.4 18.44
P7524 33.7 18.23
P8105 37.6 17.30
P7631 30.1 16.32
X75D326 31.9 15.40
Average 34.0 17.5
HYBRIDS LISTED WITH A SEVEN DIGIT NAME STARTING WITH X (E.G. X12X345) ARE ALL EXPERIMENTAL PIONEER HYBRIDS
WHICH ARE STILL BEING TESTED.
INDIVIDUAL FARMER TRIAL RESULTS: SOUTH ISLAND Page 78
Yeatman Farms (Julian & Karla Yeatman)
- Trial 2
Location: ASHBURTON
Planting Date: 20/10/2014
Harvest Date: 9/04/2015
Days from planting to harvest: 171
Trial Altitude: 47 metres
Hybrid Drymatter
(%)
Yield
(tDM/ha)
P8000 37.4 22.54
P8192 36.1 19.94
P7843 40.7 19.29
X80C888 40.7 18.82
39G12 38.5 17.28
P7892 47.7 16.84
Average 40.2 19.1
Yeatman Farms (Julian & Karla Yeatman)
- Trial 3
Location: ASHBURTON
Planting Date: 20/10/2014
Harvest Date: 16/04/2015
Days from planting to harvest: 178
Trial Altitude: 47 metres
Hybrid Drymatter
(%)
Yield
(tDM/ha)
P8284 43.5 21.68
P8589 38.0 20.46
P8450 40.5 20.18
39T45 39.7 19.47
P8644 35.1 19.30
P8805 38.1 18.82
Average 39.2 20.0
Yeatman Farms (Julian & Karla Yeatman)
- Trial 4
Location: ASHBURTON
Planting Date: 20/10/2014
Harvest Date: 23/04/2015
Days from planting to harvest: 185
Trial Altitude: 47 metres
Hybrid Drymatter
(%)
Yield
(tDM/ha)
38V12 37.0 18.69
P8745 42.1 17.98
P8805 38.7 17.81
39T45 39.1 17.53
P9400 36.6 17.30
P9027 38.0 16.43
Average 38.6 17.6
HYBRIDS LISTED WITH A SEVEN DIGIT NAME STARTING WITH X (E.G. X12X345) ARE ALL EXPERIMENTAL PIONEER HYBRIDS
WHICH ARE STILL BEING TESTED.
Page 79
THANK YOU TO THE 2014/2015 LOWER NORTH ISLAND, TARANAKI & SOUTH ISLAND TRIAL CO-OPERATORS
The results of the extensive research trial programme in this publication are only made possible with the willing assistance and
co-operation of both farmers and contractors. Special thanks to all those involved with planting and harvesting silage and grain trials pictured and listed on the following pages.
Thank you Page 80
Thank you Page 81
Thank you Page 82
Thank you Page 83
Thank you Page 84
Thank you Page 85
Thank you Page 86
Thank you Page 87
Thank you Page 88
Thank you Page 89
Thanks also go to those farmers in our trial co-operator programme whose photos were unavailable:
Chapman Onion Exports Chris Grace Mike Hurley Steve Mathis John Mobbs Maurice & Linda Sorensen