Meena Sewhag, Neeraj Pawar, Uma Devi, Ajay Singh and Gurdeep Singh Malhi
Abstract
In order to investigate the effect of different sowing dates on yield of mungbean varieties, field experiments were conducted at Research farm of CCSHAU Regional Research Station; Rohtak during kharif 2021 and 2022. The soil of the experimental field was sandy loam in texture, neutral in reaction, low in organic carbon and available nitrogen, medium in available phosphorus and high in available potassium. The experiment was laid out in split plot design with three dates of sowing viz. 25th June, 10th July and 25th July in main plot and four varieties viz. MH1142, MH 318, MH 421 and MH 1703 in sub plot replicated thrice. Overall results depicted that mungbean sown on 25th June took significantly higher number of days to attain flowering and maturity as compared to delayed sowing of 25th July. Mungbean sown on 25th June produced taller plants with higher number of branches/plant, number of pods /plant, number of seeds/ pod and biological yield. The crop sown on 25th June being at par with 10th July produced significantly higher seed yield than 25th July sown mungbean. Different mungbean varieties failed to influence days taken to flowering, but mungbean varieties MH 1703 and MH 1142 took higher number of days to attain maturity while MH 318 took least number of days to attain maturity. Among all the mungbean varieties tallest plants were recorded in MH 1142 (51 cm) which was significantly taller than rest three varieties. The number of pods/plant was recorded highest in mungbean variety MH 1142 which was significantly higher than MH 1703 but at par with mungbean variety MH 318. However, number of branches /plant, yield attributes (Number of seeds/ pod and 100 seed wt) and seed yield were significantly higher in mungbean variety MH 1703 followed MH 1142 while mungbean variety MH 318 recorded lowest seed yield. Highest biological yield and harvest index was observed in variety MH 1703. Delayed sowing of MH 1703 from 25th June to 10th July reduced the seed yield by 3.10 % and to 25th of July by 6.76 %.