Proceedings :: North Central Soil Fertility Conference

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Raines, G.A

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Authors

Hoeft, R.G

Boone, L.V

Peck, T.R

Raines, G.A

Mainz, M.J

Paul, L.E

Nafziger, E.D

Hoeft, R.G

Adee, E

Anderson, A.H

Dunker, R.E

Ebelhar, S.A

Paul, L.E

Raines, G.A

Topics

Type

Oral

Year

1989

2003

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Filter results2 paper(s) found.
1. The Effect of Tillage and Soil Test and Applied K on Corn and Soybean Production The buildup-maintenance fertility concept for P and K has a strong theoretical basis, but much of the research from which it was derived was not designed to accurately determine the true maintenance requirement. Most of that research was confounded by an annual application at set rates irrespective of yield obtained. Experience in recent years has shown that on some soils the K soil test has not consistently accounted for past additions of fertilizer. In addition, applications equivalent to crop... Download paper
2. Corn Nitrogen Response Across Environments and Crop Rotation Recent research on corn has tended to show variability in N response. Brown et al. (1993) reported that economically optimal N rates among 77 sites in Illinois ranged from zero to more than 200 lb N per acre. Results from other studies show similar variability in time and space. Even with such variability, results over environments have been combined and used to develop an N fertilizer rate guideline in Illinois based on anticipated corn yield (Hoeft and Peck, 2002). This guideline suggests providing... Download paper

Filter results2 paper(s) found.

1. The Effect of Tillage and Soil Test and Applied K on Corn and Soybean Production

The buildup-maintenance fertility concept for P and K has a strong theoretical basis, but much of the research from which it was derived was not designed to accurately determine the true maintenance requirement. Most of that research was confounded by an annual application at set rates irrespective of yield obtained. Experience in recent years has shown that on some soils the K soil test has not consistently accounted for past additions of fertilizer. In addition, applications equivalent to crop...

Download paper

2. Corn Nitrogen Response Across Environments and Crop Rotation

Recent research on corn has tended to show variability in N response. Brown et al. (1993) reported that economically optimal N rates among 77 sites in Illinois ranged from zero to more than 200 lb N per acre. Results from other studies show similar variability in time and space. Even with such variability, results over environments have been combined and used to develop an N fertilizer rate guideline in Illinois based on anticipated corn yield (Hoeft and Peck, 2002). This guideline suggests providing...

Download paper