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Below are selected
thumbnail images from work done during 2000. each image showing up the
characteristics of individual paddocks with the information being backed
up by farmers comments. The images are representative of what DMSC
(Digital Multispectral Camera) can do, in highlighting plant growth
characteristics within given paddocks.
Without exception every
paddock showed up different characteristics. A local Agronomist summarized
the usefulness of the technology very well by saying, "It has mapped
out all the differences in the paddock which I can see but do not have the
time to cover the whole paddock."
The formats in each
example are in True, PCD & False colour. All images are in 2 meter
resolution.
Click on Image
for further detail
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PCD colour image was of an
excellent crop taken at Scadden 1st week August 2000. Compare the
top paddock with the variation shown in other examples. It was unusual
to see consistent paddocks like this one, most were more consistent with
the lower paddocks.
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PCD colour image taken at
Wellstead 1st week in August. Note good growth on right hand side,
farmer evidence suggests a load of potash was put out on this area 2
years ago, crop potential was 4-5T/Ha. there is a second PCD image taken
1st October. Note changes mainly due to season. At harvest the farmer
found yield pattern across the paddock matched the image exactly.
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False colour image taken at
Wellstead 1st week August 2000, highlights areas to be spread with clay.
By registering image for latitude & longitude a clay spreader
equipped with GPS tracking could strategically distribute the clay for
optimum economic benefit. On th PCD image note the good crop on the
better soil type in the left corner.
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PCD image taken Cascades 1st
week August. Farmer was surprised to see striping in his paddocks, it
certainly was not visible from the ground. It would appear it is the
result of poor seed & fertiliser distribution with his air seeder.
It is also evident in the True & False clour images. Coincidently
there was one other farmer with the same problem.
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PCD clour image taken at
Salmon Gums shows the effect of autumn spray management. The chemical
mix in the tank was not the right formulation to knock the medic for the
first few rows. The inner area was sprayed with a correct formulation to
knock medic. In the true colour image as was backed up by the farmer the
difference was not discernable by eye from the air.
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PCD image taken at
Woogenellup, there was a marked difference in the crop in the top left
corner. Farmer seems to think that a load of fertiliser was not taken
there in past years, as soil & history should be the same.
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