Phosphorus application improved fodder yield, phosphorus use efficiency and economic returns of different pearl millet genotypes

作者：Abdul Majeed, M. B. Khan, Ahmad Dawood, Sami Ul‐Allah, Mubshar Hussain · 发表于：Soil & Environment · 年份：2023 · DOI：10.25252/se/2023/243172 · 被引用次数：6 · 研究领域：Plant nutrient uptake and metabolism、Growth and nutrition in plants、Crop Yield and Soil Fertility

Pearl millet can be cultivated in a wide range of soil types under tropical and sub-tropical warm climates. The lack of improved cultivars and non-judicious use of phosphatic fertilizers are among the major reasons for low productivity of pearl millet. The farmers usually apply nitrogen (N); however, do not apply phosphorus (P) fertilizer to pearl millet grown as fodder, which significantly reduces fodder yield. It is assumed that P application can improve fodder yield of pearl millet. Therefore, this two-year (2020 and 2021) field study tested different pearl millet genotypes (i.e., ‘MP-24’, ‘YBS-70’, ‘YBS-86’, ‘YBS-93’, ‘YBS-95’, ‘YBS-98’, ‘18-BY’, ‘14-RS-05’, ‘55-S-85’, and ‘16-RBS-10’) for their fodder production with P fertilization (90 kg ha-1) and no P application (control). Phosphorus application significantly improved growth, fodder yield (24%), P uptake and P use efficiency (PUE) of all tested genotypes with significant differences among genotypes. The genotype ‘YBS-70’ produced the highest fodder yield with P application due to notable expansion in entire growth-related traits along with higher P uptake, P use efficiency (PUE), and net economic returns. The P application to genotype ‘YBS-70’ improved net economic returns (130% and 151% during 2020 and 2021, respectively) and benefit:cost ratio (59% and 61% during 2020 and 2021, respectively) during both years. It is concluded that fodder yield, PUE and profitability of millet may be improved by P application couple...