John Kovar

Affiliate
john.kovar@ars.usda.gov


Office: 305 NLAE
Phone: (515) 294-3419



Research addresses a range of topics, including phosphorus bioavailability in manure-amended soils, phosphorus fertilizer placement, root growth and development of agronomic crops, soil testing methodology, fertilizer-use efficiency, bioavailability of trace elements, and mechanistic modeling of nutrient uptake.

http://www.nstl.gov/