Surface Drainage Research: I. Bedding as Evaluated by Corn Response Under Two Fertility Levels on a Very Fine Textured Aeric Ochraqualf1

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Abstract
Two‐year results show similar yields for nonbedded and bedded treatments. Bedding depressed silage yields 2.5 metric tons/ha and increased yield of grain in silage 190 kg/ha. Average precipitation in the fall of 1962 prevented the mechanical harvest of corn on 50% of the nonbedded and 5% of the bedded area due to wet soil conditions. After average spring precipitation in 1963, bedded areas dried faster and were planted 1 week earlier than nonbedded areas. This difference in planting date influenced yield and maturity. The application of 101 kg/ha of N, 29 kg/ha of P, and 28 kg/ha of K increased silage yield and grain in silage 13.4 tons/ha and 1750 kg/ha respectively. Mean silage yields at 1.8 meter increments from the center of the bed channel to the crown were 9.2, 18.4, 28.2, 35.2, 39.6, 41.5, 41.9, and 48.6 tons/ha. Response to the fertilizer treatment over the same spacing increments were 12.3, 14.6, 21.5, 18.8, 16.8, 11.6, 15.2, and 12.3 tons/ha of silage. Effect of fertilizer on grain in silage followed similar trends.

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