Proceedings :: North Central Soil Fertility Conference

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Mueller, T.G

Twidwell, E

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Authors

Gerwing, J

Gelderman, R

Twidwell, E

Sears, B.G

Mueller, T.G

Pusuluri, N

Isukapalli, K

Topics

Type

Oral

Year

1991

2004

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Filter results2 paper(s) found.
1. Nitrogen and Phosphorus Fertilization of Cool Season Grass Studies were initiated at two locations on cool season grass in central South Dakota to evaluate the effects of nitrogen and phosphorus on forage and seed yields. Nitrogen rates (0,30,60,90,120,1501b Nacre) and phosphorus rates (0,30,60,90,180 Ib P,Odacre) were applied to established crested or intermediate wheatgrass once and harvested for either two or three years depending on location. Nitrogen increased dry matter yield by 48 and 62% at the two locations and seed yield by 166 percent. Phosphorus... Download paper
2. Soil Electrical Conductivity Map Quality- Impact of Interpolation Search Neighborhood Parameters Spatial predictions of soil electrical conductivity (EC) measurements may be improved by adjusting the search neighborhood criteria. The objective of this study was to investigate how varying search parameters impacted the quality of soil EC maps. The three fields cl~osen for this study were from the Inner and Outer Blue Grass physiographic regions of Kentucky. Soil EC was measured by direct contact at all locations. The prediction datasets included EC measurements along transects that were separated... Download paper

Filter results2 paper(s) found.

1. Nitrogen and Phosphorus Fertilization of Cool Season Grass

Studies were initiated at two locations on cool season grass in central South Dakota to evaluate the effects of nitrogen and phosphorus on forage and seed yields. Nitrogen rates (0,30,60,90,120,1501b Nacre) and phosphorus rates (0,30,60,90,180 Ib P,Odacre) were applied to established crested or intermediate wheatgrass once and harvested for either two or three years depending on location. Nitrogen increased dry matter yield by 48 and 62% at the two locations and seed yield by 166 percent. Phosphorus...

Download paper

2. Soil Electrical Conductivity Map Quality- Impact of Interpolation Search Neighborhood Parameters

Spatial predictions of soil electrical conductivity (EC) measurements may be improved by adjusting the search neighborhood criteria. The objective of this study was to investigate how varying search parameters impacted the quality of soil EC maps. The three fields cl~osen for this study were from the Inner and Outer Blue Grass physiographic regions of Kentucky. Soil EC was measured by direct contact at all locations. The prediction datasets included EC measurements along transects that were separated...

Download paper