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Abstract

 

This article in AJ

  1. Vol. 48 No. 5, p. 207-212
     
    Received: Dec 19, 1955


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doi:10.2134/agronj1956.00021962004800050004x

Nitrogen Fertilizer for Corn Production on an Irrigated Chestnut Soil1

  1. F. V. Pumphrey and
  2. Lionel Harris2

Synopsis

Synopsis

Studies of irrigated corn on old rotation plots on very fine sandy loam had the following general results: In year of N fertilizer application, increased yields were influenced by season and soil productivity as well as by time and rate of application. Time of application had little influence on yield on low productivity soil. Marked yield increases from residual N were also influenced by the above factors. Fertilizer N was more efficient during year of application when applied before plowing, at planting time, or side-dressed when corn was 6 to 12 in. high than when side-dressed when corn was 20 to 36 in. high. Yield increases from residual nitrogen increased with delay in time of application.

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