2025, Vol. 8, Issue 1, Part B

author(s)
Saomya Dubey, AL Rathore, Anil Kumar Verma and Krishna

abstract
This study investigated the effects of phosphorus fertilization on growth, yield, and yield-related traits of rice genotypes. The experiment was conducted using 3 phosphorus levels (0, 50% and 100% recommended dose of phosphorus (RDP)) and 11 rice genotypes. Plant population, plant height, number of tillers, number of leaves, leaf area, leaf area index, leaf area duration, dry matter accumulation, crop growth rate, relative growth rate, days to 50% flowering, and grain and straw yield were measured. The results showed that phosphorus fertilization significantly influenced plant height (increase of 23.5% at 100% RDP), number of tillers (increase of 34.6% at 100% RDP), leaf area (increase of 41.2% at 100% RDP), and dry matter accumulation (increase of 51.9% at 100% RDP). However, it had no significant effect on grain and straw yield. Significant genotypic variations were observed in all the measured traits, with IET 30252 exhibiting the highest grain yield (6.2 t/ha) and BPT 5204 showing the lowest (3.5 t/ha). The study identified promising rice genotypes with superior growth and yield traits and demonstrated the importance of strategic phosphorus application for optimal rice production.