PJB-2023-22
Adjusting the sowing date to the climatic conditions of the growing area is crucial for high yield of soybeans. It is necessary to breed genotypes adapted to the day length and the thermal conditions of the cultivation area, because these factors si
Shazib Bashir
Abstract
Adjusting the sowing date to the climatic conditions of the growing area is crucial for high yield of soybeans. It is necessary to breed genotypes adapted to the day length and the thermal conditions of the cultivation area, because these factors significantly modify the course and the duration of soybean development phases, influencing the quantity of seed yield. A field experiment entitled "Comparison of yield performance of soybean varieties under different sowing dates" was carried out at The University of Agriculture, experimental farm Peshawar during summer 2022. The experiment was conducted in Randomized Complete Block Design (RCBD) with split plot arrangement having three replications. Main plot was include sowing dates (1st July, 15th July, 30th July and 15th August). Sub plot factor was comprised of 03 varieties i.e. Ajmari, NARC-16 and Malakand -96. Results exhibited that yield parameters i.e. grain yield (3668 kg ha-1), biological yield (12787 kg ha-1) , thousands seeds weight (165.2 g) , seeds pods-1 –(2.6), number of main branches plant-1 (13), emergence m-2 (42), plant height (92.7 cm), pods length (4.2 cm), number of nodules plant-1 (47), number of pods plant-1 (168) and harvest index (29%) significantly increased with early sowing (Ist July) while delayed sowing (15th August) considerably reduced the yield and yield components of the soya bean. Among different varieties of soyabean i.e. Malakand-96 resulted in produced higher yield traits i.e. grain yield (3453 kg ha-1), biological yield (12842 kg ha-1), thousands seeds weight (163.2 g), seeds pods-1 (2.8), number of main branches plant-1 (13), emergence m-2 (46), plant height (96.4 cm), pods length (4.2 cm), number of nodules plant-1 (46), number of pods plant-1 (162) and harvest index (27%) followed by variety of AJMAR whereas lowest yield traits were recorded for NARC-16. Crop (Ajmari and Malakand-96) sown on Ist July significantly produced higher grain yield and other yield components of soya bean and recommended for general cultivation under agro ecological condition of Peshawar Valley.
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