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A note on leaf removal in hybrid maize

Published online by Cambridge University Press:  27 March 2009

R. P. Singh ,
K. P. P. Nair  and
K. C. Sharma
R. P. Singh
Affiliation:
Department of Agronomy, G. B. Pant University of Agriculture and Technology, Pantnagar, India263145
K. P. P. Nair
Affiliation:
Department of Agronomy, G. B. Pant University of Agriculture and Technology, Pantnagar, India263145
K. C. Sharma
Affiliation:
Department of Agronomy, G. B. Pant University of Agriculture and Technology, Pantnagar, India263145
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Summary

The effects of differing degrees of leaf removal was studied in maize at different stages of growth and in varying plant densities. In control (untreated) plants significantly lower grain yield/unit area at the higher density (90000 plants/ha) was associated with greater barrenness, percentage of lodging and time taken for silking. Increase in plant density from 60000 to 90000 plants/ha led to a reduction in length and diameter of the ear and in weight of 1000 grains. Delay in the time of leaf removal from the tasselling stage until 10 days later increased yield, number of ears, ear length, diameter and test weight and decreased percentage of barrenness and lodging.

Leaf removal adversely affected yield and yield components (number of ears, percentage of lodging, ear size and test weight of 1000 grains). Complete leaf removal at tasselling time delayed silking and reduced lodging.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 87 , Issue 2 , October 1976 , pp. 391 - 394
Copyright
Copyright © Cambridge University Press 1976

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References

Nair, K. P. P. & Singh, R. P. (1974). Correlative analysis of yield and its components in maize. Experimental Agriculture 10, 81–6.CrossRefGoogle Scholar
Nair, K. P. P. & Singh, R. P. (1976). Plant density studies in maize in India. Journal of Agricultural Science, Cambridge 86, 617—21.CrossRefGoogle Scholar
Singh, R. P. & Nair, K. P. P. (1975). Defoliation studies in hybrid maize I. Grain yield, quality and leaf chemical composition. Journal of Agricultural Science, Cambridge 85, 241–5.CrossRefGoogle Scholar