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Correlative Analysis of Yield and its Components in Maize*

Published online by Cambridge University Press:  03 October 2008

K. P. Prabhakaran Nair  and
R. P. Singh
K. P. Prabhakaran Nair
Affiliation:
Department of Agronomy, GB Pant University of Agriculture and Technology, Pantnagar, India
R. P. Singh
Affiliation:
Department of Agronomy, GB Pant University of Agriculture and Technology, Pantnagar, India
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Summary

At Pantnagar, India, linear response in maize to nitrogen application was observed up to 150 kg. of N/ha. with some of the most promising hybrids and composites released by the All India Co-ordinated Maize Improvement Programme. Increase in grain yield, and total nitrogen accumulation in grain, were substantially more in Ganga 2 than in the local cultivar or the composites, at higher rates of N application. In absolute terms, the local cultivar accumulated more nitrogen in its grain, but the relative amounts declined at higher rates of N application. Among the yield components influencing ultimate grain yield, barrenness exerted a negative influence on grain yield through the number of cobs per plot. Among cob characters, such as thousand grain weight and number of grains per cob, the former exerted a substantial influence on grain yield.

Type
Research Article
Information
Experimental Agriculture , Volume 10 , Issue 2 , April 1974 , pp. 81 - 86
Copyright
Copyright © Cambridge University Press 1974

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References

* Publication No. 504 of the GB Pant University of Agriculture and Technology, Pantnagar Experiment Station.