Volume 42, Number 7 | MARCH 8, 2016
$4.25
PRACTICAL PRODUCTION TIPS FOR THE PRAIRIE FARMER
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DIGITAL PICTURES: THEY’RE WORTH A THOUSAND STEPS Ground truthing is important, but aerial imagery can tell stories you can’t see with the eye By Lee Hart
» continued on page 4
photo: photos courtesy pat reeg
Y
ou can’t beat an eye in the sky when it comes to telling you what’s happening on the ground with your crop, says a longtime Iowa crop management specialist. Different types of aerial imagery that show visual differences during the growing season can be an extremely valuable tool for pointing to shortfalls or successes concerning everything from nutrient management, to misapplications with equipment, to weed and pest control problems, says Pat Reeg, operations manager with the On-Farm Network of the Iowa Soybean Association. Reeg, who recently gave a presentation to a Tactical Farming Conference in Calgary says aerial imagery taken from a plane, helicopter or newer technology such as drones can tell a very clear and visual story about treatments that work or don’t work, or simply just raise a flag about some difference in the crop that needs to be checked out on the ground. The Iowa association, which conducts a wide range of on-farm, field-scale research projects every year, relies on aerial imagery to provide a report card on different treatments applied in test strips as well as to show what is happening
This is what is known as an NDVI image (normalized difference vegetation index) of an on-farm, field-scale soybean trial. This trial, with different treatment strips across the field, was looking at using a pre-seeding herbicide, such as a granular which was incorporated, compared to a glyphosate treatment. In some areas where the pre-seeding product was ineffective they went back in with an in-crop herbicide treatment which in some areas damaged the crop. The mostly green area is a relatively healthy crop with the strips indicating different treatments. The red areas show problems in the field. The headlands may indicate a different crop or different type of vegetation, or higher compaction. The larger red patches on the upper left hand side show areas that have likely been flooded out or have a disease problem. The yellow areas indicate crop that has been damaged by in-crop herbicide. There is a powerline or pipeline right away cutting diagonally across the upper right hand side of the photo.
In This Issue
Publications Mail Agreement Number 40069240
Wheat & Chaff .................. 2 Features . ........................... 5 Crop Advisor’s Casebook . 6 Columns ............................ 10 Machinery & Shop............. 32
B:11.5”
Cattleman’s Corner .......... 40
T:11”
EARLY WEED REMOVAL 10% YIELD INCREASE*
To learn more watch the Early Weed Removal video at cropscience.bayer.ca/YieldGain and enter for a chance to WIN a spray performance kit. * 2015 Agronomic Development trials, 3 replicated trials, 6 different treatments: Varro® or Simplicity® or Everest® + Pixarro™ or Paradigm™
cropscience.bayer.ca/Varro
1 888-283-6847
@Bayer4CropsCA
Always read and follow label directions. Varro is a registered trademark of Bayer Global. All other products are trademarks of their respective companies. Bayer CropScience Inc. is a member of CropLife Canada. ®
S:10.25” traffic controlled
Gleaners updated
lee hart page 26
SCOTT GARVEY page 36
+10%
YIELD OVER LATE APPLICATION OF GROUP 2 HERBICIDES
FarmLife ............................ 45
C-78-02/16-10508448-E