Soil Science Research Report - 1990

Authors

Date of this Version

1990

Document Type

Article

Comments

Published in Soil Science Research Report (1990) 99 pages.

Abstract

Weather Data 1990 Reported from Research Centers ............. 1

Evaluation of Soil Testing for Nitrate-Nitrogen (E.J. Penas) ............. 7

Dynamics of Water in Rigid and Swelling Soils (Dale Swartzendruber) ............. 13

Atrazine Movement as Affected by Pore Size Distribution in a Silt Loam Soil (J.U. Baer, W.L. Powers, P.J. Shea, D.A. Tupy, and C.L. Stueffer-Powell) ............. 15

Effects of Residual Phosphorus Bands on Crop Yield and Their Persistence in the Soil (Mohammed A. Zerkoune, C.A. Shapiro, and D.H. Sander) ............. 19

Nitrogen Fertilization of Smooth Brome (A.B. Ferguson and G.P. Slater) ............. 23

The Effects of a Urease Inhibitor on Volatile Ammonia Loss and Urea Hydrolysis on Irrigated, Ridge Till Corn (Timothy L. Murphy and Richard B. Ferguson) ............. 27

Winter Cover Crop Effects on Nitrogen Management of Irrigated Corn (Richard B. Ferguson, James F. Power, and Glen P. Slater) ............. 31

Tillage, Rotation and N Rate Effects of Dryland Corn Production and Nitrogen Uptake in Northeastern Nebraska (D.T. Walters and C.A. Shapiro) ............. 41

Increasing Nitrogen Use Efficiency by Dryland Sorghum Under Conventional and No-tillage Systems (M.V. Marake, D.T. Walters, and D.H. Sander) ............. 51

Residual Effects of Treatments Applied to the Soil Test Lab Comparison Study (Gary W. Hergert, Charles A. Shapiro, and D.H. Sander) ............. 59

Using N-Serve to Modify Plant Available Ammonium and Nitrate for Corn (Gary W. Hergert) ............. 65

Spatial Variability of Nitrate-Nitrogen in Nebraska Corn Fields (Gary W. Hergert, Frank N. Anderson, Charles A. Shapiro, Richard B. Ferguson, Edwin J. Penas, and Kenneth D. Frank) ............. 71

Soil Test Lab Comparison Experiment on the B-K-R Demonstration Farm (Gary W. Hergert, Dennis Bauer, and Bud Stolzenburg) ............. 79

Field Evaluation to Determine Best Fluid Fertilizer for Corn (A. A. Wiese, and E.J. Penas) ............. 85

Increasing Anhydrous Ammonia Efficiency on Irrigated Corn in Nebraska (M. V. Marake, D. H. Sander and D. T. Walters) ............. 95

Evaluation of Tillage, Rotation, Nitrogen and Cover Crop Effects on Nitrogen Cycling (K. Anabayan, D. T. Walters and D. H. Sander) ............. 99