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Response of pigeon pea (Cajanus cajan (L.) Millsp.) to plant density and phosphorus fertilizer under dryland conditions

Published online by Cambridge University Press:  27 March 2009

I. P. S. Ahlawat  and
C. S. Saraf
I. P. S. Ahlawat
Affiliation:
Division of Agronomy, Indian Agricultural Research Institute, New Delhi-110012, India
C. S. Saraf
Affiliation:
Division of Agronomy, Indian Agricultural Research Institute, New Delhi-110012, India
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Summary

Field studies were made for 2 years on a sandy loam soil under dryland conditions of north-west India with three pigeon-pea varieties in relation to plant density and the application of phosphate fertilizer. Varieties Pusa Ageti and P4785 with better developed root system and profuse nodulation had higher grain and stalk yield, and higher N and P yield than Prabhat. Root and shoot growth and root nodulation were adversely affected with increasing plant densities in the range 50 × 103 and 150 × 103 plants/ha. Stalk and total N and P yield increased with increasing plant density. Plant density of 117 × 103 plants/ha produced maximum grain yield of 1·53 t/ha. Phosphorus fertilizer promoted root and shoot growth, intensity and volume of nodulation and increased grain, stalk, N and P yield. The effect of plant density on grain yield was more pronounced in the presence of phosphate fertilizer. The economic optimum rate of P ranged between 22·1 and 23·1 kg/ha under different plant densities.

Type
Research Article
Information
The Journal of Agricultural Science , Volume 97 , Issue 1 , August 1981 , pp. 119 - 124
Copyright
Copyright © Cambridge University Press 1981

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References

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