ISSN: 0041-3216 (Online), 0041-3216 (Print)
Volume 69 Number 3
Effects of phosphorus deficiency on phenology and yield components of short-duration pigeonpea
In pot experiments with Alfisols (fine hypothermic Udic Rhodustalf) of low P status, P deficiency delayed flowering and maturity of pigeonpea (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 plants-1 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 leaved at plant maturity. These results have implications for adapting short-duration pigeonpea to various cropping system.
Keywords: Pigeonpea; Cajanus cajan (L.) Millsp.; Alfisol; Flowering; Morphology; Symptoms; Phosphorus uptake