Proceedings :: North Central Soil Fertility Conference

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Peck, T.R

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Authors

Hoeft, R.G

Boone, L.V

Peck, T.R

Raines, G.A

Mainz, M.J

Paul, L.E

Franzen, D.W

Peck, T.R

Topics

Type

Oral

Year

1989

1996

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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. Grid Sampling or Topography Sampling for Soil Nutrients Site-specific application of fertilizers uses field soil sampling for its information basis. Many fields are currently sampled using a grid approach. In North Dakota, examination of grid sampling showed nitrate-N to follow topographic patterns in a field, allowing the possibility of less intensive sampling for N. Reviewing previous grid sampling work in Illinois, some soil properties may be associated with landscape features, including nitrate-N in the surface 6 inches and soil pH. However, Illinois... 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. Grid Sampling or Topography Sampling for Soil Nutrients

Site-specific application of fertilizers uses field soil sampling for its information basis. Many fields are currently sampled using a grid approach. In North Dakota, examination of grid sampling showed nitrate-N to follow topographic patterns in a field, allowing the possibility of less intensive sampling for N. Reviewing previous grid sampling work in Illinois, some soil properties may be associated with landscape features, including nitrate-N in the surface 6 inches and soil pH. However, Illinois...

Download paper