New possibilities in late blight control - agro.au.dk

PowerPoint PresentationTim Buchheim
Copyright © 2017 • All rights reserved ORO AGRI International Ltd.
Established 2001 in South Africa develops and manufactures patented products for agricultural, home and industrial applications worldwide, specializing in products that are safe to the user and environment and that provide an effective, yet residue free solution to our clients. Product categories include adjuvants, pesticides, soil conditioners and foliar fertilizers.
Oro Agri
Oro Agri • Regional Offices
Sub-Saharan Africa
Products for late blight control
Multipurpose product including the a.i. orange oil that can be used as insecticide, fungicide and acaricide. The product works by disrupting the protective waxy layers of insects and fungi resulting in desiccation of the target. Targeted to be certified for organic production.
Premium adjuvant for insecticides, fungicides and herbicides, provides excellent spreading, deposition and penetration. Certified for organic use in some EU countries.
Products for late blight control
3 greenhouse trials in 2016 (1) and 2017 (2) Trials included an untreated control and a reference product treatment Design: Randomized complete block with 4 replicates. PREV-AM was applied 3 days (2) or 1 day (1) before artificial inoculation with P. infestans. % necrotic foliage was assessed at different timings after the inoculation.
Trials with PREV-AM
PREV-AM 1
% necrotic foliage
c
b
c
b
c
b
a a a
4 dpi 5 dpi 7 dpi UTC 51.3 80.0 92.0 mancozeb (75%) 2 kg/ha 3.0 4.5 7.3 PREV-AM 0.3% 16.3 22.5 35.0
Trial conducted at
PREV-AM 2
% necrotic foliage
UTC PREV-AM 0.4% -3d PREV-AM 0.8% -3d propamocarb + fluopicolide (62.5 + 625 g/L) 1.2 L/ha - 3d
e
bc ab
5 dpi 7 dpi 11 dpi UTC 37.5 37.5 52.5 PREV-AM 0.4% -3d 4.0 12.5 26.3 PREV-AM 0.8% -3d 2.5 7.5 20.0 propamocarb + fluopicolide (625 + 62.5 g/L) 1.2 L/ha - 3d 0.8 4.3 14.5
PREV-AM 3
Trial conducted by
7 dpi UTC 93.0 PREV-AM 0.4% -1d 27.9 PREV-AM 0.6% -1d 15.8 mancozeb (75%) 0.5% p/v -1d 0.5
0,0
10,0
20,0
30,0
40,0
50,0
60,0
70,0
80,0
90,0
100,0
7 dpi
% necrotic foliage
UTC PREV-AM 0.4% -1d PREV-AM 0.6% -1d mancozeb (75%) 0.5% p/v -1d
a
c
Trial with WETCIT One field trial in 2016 Trials included an untreated control, a reference product treatment and a total of 11 different treatments with different late blight control programs. Design: Randomized complete block with 4 replicates.
We compared the results of the addition of WETCIT to a program that includes 5 treatments of mandipropamid (250 g/L), 4 treatments of propamocarb + fluopicolide (625 + 62.5 g/L) and 1 treatments of cyazofamid (160 g/L) vs. same program without WETCIT. % foliage damage was assessed at 6 different timings during the trial.
Spray program
16-Jun 23-Jun 01-Jul 06-Jul 13-Jul 14-Jul 18-Jul 25-Jul 29-Jul 03-Aug 08-Aug
Treatment Number T1 T2 T3 T4 T5-1 T5-2 T6 T7 T8 T9 T10
A 0.5 L/ha cyazofamid (160 g/L)
0.5 L/ha cyazofamid (160 g/L)
+ 0.25 % Wetcit
K 0.6 L/ha mandipropamid (250 g/L)
+ 0.25 % Wetcit
1.2 L/ha propamocarb + fluopicolide (625 + 62.5 g/L) + 0.25 % Wetcit
NL-SOLTU-2016-F-02
NL-SOLTU-2016-F-02
4.5
7.3
8.8
6.9
3.8
8.0
10.5
7.4
Situation
Greenhouse
% necrotic foliage
UTC 4 dpi 5 dpi 7 dpi 51.3 80 92 PREV-AM; 0.3% 4 dpi 5 dpi 7 dpi 16.3 22.5 35 mancozeb (75%) 2 kg/ha 4 dpi 5 dpi 7 dpi 3 4.5 7.3 Dithane DG NT 1 kg/ha 4 dpi 5 dpi 7 dpi 4.5 7.3 8.8000000000000007 Dithane DG NT 1 kg/ha + WETCIT 0.3% 4 dpi 5 dpi 7 dpi 3.8 8 10.5
NL-SOLTU-2017-F-01
NL-SOLTU-2017-F-01
0.8
4.3
14.5
6.5
Situation
Greenhouse
Desgin
% necrotic foliage
UTC 5 dpi 7 dpi 11 dpi 37.5 37.5 52.5 PREV-AM 0.4% -3d 5 dpi 7 dpi 11 dpi 4 12.5 26.3 PREV-AM 0.8% -3d 5 dpi 7 dpi 11 dpi 2.5 7.5 20 propamocarb + fluopicolide (62.5 + 625 g/L) 1.2 L/ha - 3d 5 dpi 7 dpi 11 dpi 0.8 4.3 14.5
Sheet1
Crop
Potato
Variety
Bintje
Target
16-Jun
23-Jun
1-Jul
6-Jul
13-Jul
14-Jul
18-Jul
25-Jul
29-Jul
3-Aug
8-Aug
1.2 L/hapropamocarb + fluopicolide (625 + 62.5 g/L)
K
1.2 L/ha propamocarb + fluopicolide (625 + 62.5 g/L)
+ 0.25 % Wetcit
+ 0.25 % Wetcit
+ 0.25 % Wetcit
0.5
0.5
Situation
Greenhouse
Desgin
Innoculation date
Fungicide treatment
Spray volume
Assessment dates
7 dpi
% necrotic foliage
UTC 7 dpi 93 PREV-AM 0.4% -1d 7 dpi 27.900000000000006 PREV-AM 0.6% -1d 7 dpi 15.810000000000002 mancozeb (75%) 0.5% p/v -1d 7 dpi 0.5
Results
Both tested product have proven to possess great potential to help control potato late blight both in conventional and organic potato production. PREV-AM provides a good preventive action delaying the development of late blight. It can therefore be included in traditional spraying programs and can possibly be an alternative to copper in organic potato production. WETCIT has impressively shown to be a perfect partner for your traditional spraying program helping to achieve the maximum efficacy of the sprayed products. Both products will be further tested to confirm the shown results under different conditions.
Summary
Thank you for your attention!
New possibilities in late blight control
Oro Agri
Oro Agri
Trials with PREV-AM

New possibilities in late blight control - agro.au.dk

Documents