Effects of phosphorus deficiency on phenology and yield components of short-duration pigeon pea
1992
Chauhan, Y.S. | Johansen, C. | Venkataratnam, N. (ICRISAT. Patancheru (India). Legumes Program)
In pot experiments with alfisols of low P status, P deficiency delayed flowering and maturity of pigeon pea (Cajanus cajan (L.) Millsp.) cultivar ICPL 6 by up to two months. A reduction in grain yield due to P deficiency could primarily be attributed to less biomass, less branching, fewer pods/plant and reduced seed mass. At the soil P level giving near-minimum grain yields, concentrations were about 0.3 % in the seed and 0.15 % in the leaves at plant maturity. These results have implications for adapting short-duration pigeon pea to various cropping systems.
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