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Evaluation of a nitrogen leaching/mineralization model for sugar beet

A.P. WHITMORE, G.F.J. MILFORD and M.J. ARMSTRONG
Plant and Soil
Vol. 101, No. 1 (1987), pp. 61-65
Published by: Springer
Stable URL: http://www.jstor.org/stable/42936692
Page Count: 5
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Evaluation of a nitrogen leaching/mineralization model for sugar beet
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Abstract

Tests were made of the ability of a leaching/mineralization model to predict the amounts of mineral N in the soil in spring as a step towards estimating the nitrogen fertilizer requirement of sugar-beet crops. There was good agreement between predicted and measured values, both under conditions of natural winter rainfall and when the soil was covered to prevent leaching. The model also successfully predicted leaching losses of soil mineral N soon after drilling in a year in which early season irrigation and heavy rain induced considerable leaching.

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