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Synchronising diagnosis and correction of nitrogen deficiency in barley grown in semi-arid environments
D. E. ELLIOTT, S. D. PELHAM and D. J. REUTER
Plant and Soil
Vol. 155/156, Selected papers from the PROCEEDINGS OF THE TWELFTH INTERNATIONAL PLANT NUTRITION COLLOQUIUM (October 1993), pp. 363-366
Published by: Springer
Stable URL: http://www.jstor.org/stable/42939336
Page Count: 4
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In field experiments conducted from 1986 to 1989, nitrogen (N) deficiency in barley crops was corrected with the same efficiency by applying N fertilizer at sowing or by broadcasting it at early tillering. Four plant tests for diagnosing and predicting N deficiency in barley were evaluated. Of these the basal stem nitrate-N test was best with a calibrated critical range of 12 000 to 15 000 mg kg⁻¹ when sampling was during early tillering.
Plant and Soil © 1993 Springer