Water Use Efficiency as Influenced by Topsoil Thickness and Fertility on Reclaimed Land
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Date
1980
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The efficiency of corn silage production on a reclaimed site per unit of water used by the crop increased significantly as topsoil or first lift material was increased in thickness in 2 of 5 years in an experiment near Beulah, North Dakota. Water use efficiency (WUE) of wheat was increased significantly in 3 of 5 years. Nitrogen fertilization caused a statistically significant increase in corn silage WUE values for 1978 and 1979 in an experiment utilizing a uniform first lift thickness. Comparable effects were not produced for wheat grains, caused in part by insects that reduced yields.