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Date |
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1/31/2005 |
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Project Title |
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Evaluation of a GreenSeeker Handheld for determining Determining
site-specific Yield Goals from Surface Residue and potential
Site-specific soil OM estimations |
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Investigator 1 |
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Investigator 2 |
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Dietrich Kastens RR 2 Box 80, Herndon, KS 67739 |
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Phone |
7856269284 |
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Phone |
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Email |
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Email |
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dietrich@kastensinc.com |
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Statement of Problem |
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Establishing of site-specific yield goals in NW Kansas is an
un-researched topic and our previous year's KARA research made
in-roads in this area using a Veris rig. This will be somewhat of a
continuation on this previous research in that another spatially dense
data set will be developed to better the relationship betweeen OM,
surface residue and ultimately yields. |
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Project Objectives |
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The goal of this research is to better map surface residue (as an
indicator of productivity) in conjuntion with Veris EC data so that a
better understanding of site-specific yield goals can be realized.
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Methodology |
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During spring soil sampling of ground going into a fall crop, a Veris
EC rig will be pulled and then site-specific estimates of soil water
holding capacity (soil health) will be calculated using research
results obtained in our 2004 KARA research project. At planting time,
a GreenSeeker handheld will be attached to the tractor to develop a
spatially dense map of crop residue (a base residue will be determined
using in-field assessments along with non-grain residue estimation
tools provided from University research, this will then be varied
spatially by the GreenSeeker values). Following fall harvest, three
spatially dense data sets will exist (Veris, GreenSeeker and Yield)
for determining yields effects from estimates of soil water, surface
residue and actual production to determine ability to generate
site-specific estimates of Yield Goal appropriate to corn production.
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Expected outcome / Benefit to KARA |
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In Western Kansas, the soil water holding capability has been shown to
be highly correlated with crop yields. As this capability varies
spatially, this variation should serve to indicate spatial differences
in yield potential, and thus yield goal. |
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