PHOSPHATE USE EFFICIENCY IN GRAIN SORGHUM CULTIVARS

Abstract

A field experiment with 5 sorghum cultivars viz., CSH-5, CSH-6. Cs-3541, SPV-297 and PJ-8(K) was conducted to study the phosphate use efficiency in sorghum. Per cent P derived from fertilizer was increased with increasing levels of P at all the stages of growth... Amongst the sorghum cultivars, hybrid CSH-5 extracted maximum P (41.69%) from applied source. The per cent P removal by plant was low at second sampling (At 60 day plant growth stage), The genotypic ability for utilization of applied fertilizer P differed greatly, Hybrid CSH-5 utilized the largest amount of applied P(7'39 per cent) while PJ-B(K) utilized the. lowest (3-10 per cent) during 60 days of plant growth Significantly high P uptake in all the sorghum cultivars was observed at 90 kg P0s/ha, Mean maximum P uptake (26.40 kg) P.0/ha) was recorded in hybrid CSH-5 and lowest (14.20 kg P₂Oc/ kg was observed in PJ-8 (K) Evon with applied fertilizer Phosphato, sorghum crop obsorbed nearly 92 per cent of its total P uptake from native soil P source.

DOI

https://doi.org/10.29321/MAJ.10.A02636

Pages

388 - 392

Creative Commons

Copyright

© The Author(s), 2025. Published by Madras Agricultural Students' Union in Madras Agricultural Journal (MAJ). This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited by the user.

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