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Effects of Fertilizer Nitrogen on Yield of Wheat in Northern Sudan

Published online by Cambridge University Press:  03 October 2008

A. G. A. Gabar Ahmed  and
D. A. Dafalla
A. G. A. Gabar Ahmed
Affiliation:
Hudeiba Research Station, Democratic Republic of the Sudan
D. A. Dafalla
Affiliation:
Hudeiba Research Station, Democratic Republic of the Sudan
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Summary

An experiment at Hudeiba Research Station in Northern Province for three consecutive seasons, testing the effects of form, rate and time of application of nitrogen, showed that grain yield of wheat was significantly influenced by rate and time of application but two forms of fertilizers behaved similarly. None of the factors examined affected the 1000 grain weights. A second order polynomial function, fitted to yields at different nitrogen levels to determine economic levels was quadratic, best described by Y = a + 11·809x − 0·1037 x2. When almost all relevant factors were considered, 30–40 kg. of N per acre appeared to be an optimum economic level.

Type
Research Article
Information
Experimental Agriculture , Volume 9 , Issue 4 , October 1973 , pp. 347 - 352
Copyright
Copyright © Cambridge University Press 1973

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References

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