John Kovar
USDA-Agricultural Research Service (ARS)National Laboratory for Agriculture and the Environment (NLAE)
2110 University Boulevard
Ames, IA
USA 50011-3120
Email: john.kovar@ars.usda.gov
Papers:
140-22 Sorption-Desorption Indices to Estimate Risk of Phosphorus Loss From Soils in An Iowa Watershed.
235-3 Do Hand Samples Accurately Estimate Harvestable Corn Stover?.
336-15 Depletion of Rhizosphere Solution Phosphorus by Corn Grown in Compost-Amended Soil Under No-till Production.