Balanced fertility management: a key to nutrient use efficiency

  • Johnson J
  • Murrel T
  • Reetz Jr. H
  • 3

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Abstract

Data from an experiment conducted on a silt loam soil in Ohio, USA, have demonstrated that the largest maize grain yields were obtained with 160 lb N/acre and soil K levels of 232 lb/acre. In the presence of K the large N uptake by plants decreased the soil N content after harvest and reduced the risk of groundwater contamination. Economic aspects of these results are considered.

Author-supplied keywords

  • APEC countries
  • America
  • Corn Belt States of USA
  • Cyperales
  • Developed Countries
  • East North Central States of USA
  • Fertilizers and other Amendments [JJ700]
  • North America
  • North Central States of USA
  • OECD Countries
  • Ohio
  • Plant Nutrition [FF061]
  • Poaceae
  • Soil Chemistry and Mineralogy [JJ200]
  • Spermatophyta
  • USA
  • United States of America
  • Zea
  • angiosperms
  • corn
  • eukaryotes
  • fertilisers
  • fertilizers
  • maize
  • monocotyledons
  • nitrogen
  • nitrogen fertilizers
  • plants
  • potassium
  • silt loam soils
  • soil
  • uptake
  • zea mays

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Authors

  • J W Johnson

  • T S Murrel

  • H F Reetz Jr.

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