Oakes
STRIP-TILL SOYBEAN ON CORN
W. Albus, L. Besemann and
H. Eslinger
A strip-tilled corn/soybean rotation
was initiated in 2007. The corn/soybean
and soybean/corn treatments are present each year and rotated with each
other. In the soybean year the
antecedent effects of the N rates in the previous corn crop will be studied.
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Soil: |
Embden sandy loam, Hecla sandy loam and
Maddock sandy loam; pH=7.1; 2.1% organic matter; soil-P and soil-K were very
high; soil-S was low. |
|
Previous crop: |
2006 – field corn; 2005 – pumpkin and
watermelon; 2004 – field corn. |
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Seedbed Preparation: |
Strip-tilled on November 13, 2006, with a shank
machine with leading coulters, row cleaners, anhydrous knives and closing
disks |
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Planting: |
Planted Pioneer P90M92 treated with
Celltech inoculant on May 10 @ 175,000 plants per acre in 30 inch rows. |
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Plots: |
Plots were 35.5 ft long by 15 ft (6
rows) wide. There were four reps. |
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Fertilizer: |
November 2006, During the strip-till operation applied 15 lbs
N/acre and 51 lbs P2O5/acre as 10-34-0. |
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Irrigation: |
Overhead sprinkler irrigation as needed. |
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Pest control: |
Glyphosate Original (1 qt/acre) + NIS
(0.5% v/v) + AMS (1 lb/10 gal) on June 5, Cornerstone (32 oz/acre) + AMS (10
lb/100 gal) on June 19 and Cornerstone (40 oz/acre) + AMS (10 lb/100 gal) on
July 5. |
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Harvest: |
On September 28, All the soybeans were
harvested including the borders with a 4400 JD combine using a 4-row all-crop
head |
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Previous corn ground was
strip-tilled on November 13, 2006.
Anhydrous knives were set to a 6-inch depth and banded 13 gal/acre of
10-34-00 (15 lb/acre N applied). Since
the previous corn crop was treated uniformily there was no treatment effects to
quantify. The whole plot area, 220’ x
74’ was harvested and weighed as one plot.
The soybeans yielded 57.6 bu/acre.
Planting conditions were ideal on the strips and soybean emerged more
uniformly than soybeans on conventionally tilled ground.
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