(CQUS-750 SERIES) An ISO 9001:2208 | ISO 14001:2008 | ISO 13485 WHO:GMP Products | GLP Compliant Products
Mar 09, 2016
(CQUS-750 SERIES)
An ISO 9001:2208 | ISO 14001:2008 | ISO 13485WHO:GMP Products | GLP Compliant Products
Soil compaction refers to the
formation of dense layers of
well packed soil, often at the
bottom of the cultivated layer.
The most common causes of
soil compaction are tractors,
harvesting equipment and
implement wheels travelling
over moist, loose soils. Soils
tend to be more compacted
deeper into the soil profile due
to the weight of overlaying soil
above.
Soil Compaction
Soil C
ompaction
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• load• ground contact pressure (same as inflation pressure)• wheel slip• tyre dimensions and construction• forward speed• the number of passes (90% of compaction occurs
on the first pass).
Soi
l Com
pact
ion
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less soil water and is harder for
roots to penetrate. In their virgin
state soils can be productive and
characterized by excellent physical
condition. They allow rapid
movement of air and water through
the soil, providing an ideal
environment for maximum root
growth and high yields. However,
soils are fragile and easily
restructured, especially during
cropping. Compaction is an
example of this restructuring. If
compacted badly enough, a soil
does not provide adequate space
for root growth and soil animal
activity, or allow for rapid
Tractor power and weight have
increased 60 - 80% since the mid-
sixties, while the tyre area in contact
with the soil has only increased on
average 20%. This means that
compaction is occurring deeper in
the profile, and is therefore
becoming more difficult to repair
once it occurs.
Compacted soil has smaller soil
pores, less pore continuity and
greater strength. This makes the soil
less suitable for growing crops. The
soil has fewer spaces that contain
air and water needed for plant
growth, is less permeable, can store
Compaction from tyres is related to
Effects of Soil Compaction on Plant Growth
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movement of air and water. In severe cases, roots are unable to penetrate into deeper soil
layers, tending to grow along the top of the pan.
The best way for water and air to move through the soils is in large pores created by
decaying plant roots or soil insects and earthworms. External pressures, such as from tyres
or tillage tools, cause the large pores to collapse to form smaller pores that are less
efficient conductors of air or water. The result is slower water infiltration, poor drainage or
poorly aerated soils that limit root growth and nutrient uptake needed for maximum
yields. However, some soil consolidation or "firmness" is beneficial. In very loose,
uncompacted soils we could not be able to drive over a paddock pulling an implement
without becoming bogged. Firming the soil around the seed (also a form of compaction) is
necessary for creating good seed-soil contact at planting. This is why press-wheels are
important for ensuring even crop emergence. Some crops, like barley, actually seem to
prefer strong seed-soil contact and a more densely packed root zone than a very loose
one. However, compaction must not be allowed to become excessive and should be
minimised in the plant root zone.
Effects of Soil Compaction on Plant Growth
In some years compacted soil will affect
yields, while in others it will have no
impact. In seasons when there is steady
rainfall that occurs throughout the season
and the optimum number of plants is
established, compaction will tend not to
influence yields. In other seasons,
compaction can limit yields though
reducing the soil's ability to store soil
moisture or to make available stored moisture during extended dry periods.
Compaction can actually increase yields in
some years, by slowing the rate of crop
growth and exploitation of stored soil
moisture until follow up rain occurs. This
means better use can be made of late
season rainfall - particularly if the rain
coincides with flowering or grain-fill.
However, the situations when this occurs
are rare.In the long-term, if compaction leads to
higher rates of soil erosion than would
normally occur without compaction, it will
eventually decrease the potential yield of a
paddock. Similarly, if compaction becomes
severe enough to greatly restrict root
activity, the number of seasons in which
crops will perform well will rapidly
decrease and the paddock becomes more
drought prone.
Importance of Compaction Detection And Soil Analysis
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We understand the importance and significance of
the soil compaction recording device and how its
important for long term soil conservation. Weiber
offers a unique GPS based soil compaction recorder
with computer interface to effectively record the soil
compaction in real time, analyze the data and log in
the data to the host computer for detailed and
comparative analysis of data taken from different
locations. This equipment is a very important tool
real time soil compaction analysis and to generate
computer drawing and maps of the given area.
Products Overview
Soi
l Com
pact
ion
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• Measuring the depth : 0-450mm
• Measuring range : 0-100kg; 0-7000kpa (0-1000psi)
• Accuracy : the kg unit: 0.05kg
• Pressure Unit : kg and kpa
• Data Acquisition Memory : 1000 entires
• Operating Temperature : -10 ? -60 ?
• Power Supply : Battery Operated
Model Details (CQUS-750 -I)
Common type, a direct indication of soil compaction (kg and kpa), a
data storage function, directly stored in the host. Standard
configuration with: host, stainless steel measuring rod, the battery
CQUS-750 -II (With Built - In GPS System)
Other Features same as CQUS-750 -I but with data storage to the
host computer, RS232 interface, with computer data export
software, storage, printing software, built-in GPS positioning
system, real-time display of measurement points, location
information (latitude and longitude), and can take advantage of this
location data in a computer drawing maps of soil compaction
Products Overview
• Portable
• Light Weight large-screen LCD
display,
• M e m b r a n e k e y b o a r d -
Automatically data recording
• Simultaneously display of two
units kg and kpa -Stainless steel
measuring rod,
• Poles have different depths
scale identification-
No external power supply
required
• R e a l - t i m e d i s p l a y o f
measurement points can be
l o c a t i o n i n f o r m a t i o n
(latitude and longitude)
Features:
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Tel: 0049-79592345 | Email: [email protected]
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