Co-Authors:
Bar‐Akiva, A., Volcani Institute of Agricultural Research, Bet Dagan, Israel
Sagiv, J., Volcani Institute of Agricultural Research, Bet Dagan, Israel
Leshem, J., Volcani Institute of Agricultural Research, Bet Dagan, Israel
Abstract:
The enzymic nitrate reduction capacity of leaves, which is defined as the rate of response to the inducing stimulus of externally added NO3 substrate to incubated leaf fragments, is proposed as a measure for assessing the nitrogen fertilisation requirement of grass crops. The assay was tested in an annual ryegrass field experiment plot, where the effect of increasing N levels was studied. The rate of response diminished from 11 to 1 and was negatively correlated with the yield and NO3 concentration in the leaves. Copyright © 1970 John Wiley & Sons, Ltd
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