Effect of Nitrogen Sources on the Yield of Different Blackgram (Vigna mungo) Varieties

Abstract

In Bangladesh, the average yield of blackgram is not satisfactory level. There are many reasons for a lower yield of blackgram. Nitrogen and weed management in winter season is of them. This study is to find out the effect of nitrogen sources on the yield of different black gram varieties. The experiment was laid out in a split-plot Design with three replications. Nitrogen source was assigned to main plots and varieties to sub-plots. The field experiment was conducted at the Agronomy field of Central Research Farm of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during the period from September 2014 to January 2015. The experiment consisted of two factors such as nitrogen sources and blackgram varieties. The treatments were as follows: Factor A: nitrogen sources (3 types) viz. T 1 : prilled urea, T 2 : biofertilizer, T 3 : no nitrogen (control) and Factor B: varieties (4 types) viz. V 1 : BARI mash-1, V 2 : BARI mash-2, V 3 : BARI mash-3 and V 4 : local mash. In case of different nitrogen sources, the highest grain yield and harvest index (1.45 t ha -1 and 40.05%) was found from biofertilizer application. This treatment also showed highest pod length (5.28 cm), pods plant -1 (34.80), seeds pod -1 (7.08) and 1000-seed weight (40.55 g). Among the blackgram Original Research Article

Effect of leaf clipping on growth and yield of blackgram (Vigna mungo L.)

“…The probable reason for this may be the varietal potentiality of the plant. The present study was similar to the findings of Siddikee et al (2018). At 15 DAS maximum plant height (11.50 cm) was observed in clipping of 1 st basal leaf treatment, at 30 DAS maximum plant height (27.80 cm) was observed in no leaf clipping treatment which was statistically similar to clipping of 2 nd basal leaves and clipping of 1 st basal leaf treatment, and at 45 DAS and harvest, respectively the maximum plant height (48.24 cm and 55.20 cm) was observed in clipping of 1 st basal leaf treatment.…”

“…The maximum number of pods plant −1 of blackgram (14.0) was observed in BARI Mash-3 and the minimum (11.75) in BARI Mash-1 treatment. Siddikee et al (2018) and Mane et al (2018) was also found similar result. The maximum number of pods plant −1 of blackgram (15.18) was observed in clipping of 1 st basal leaf treatment and the minimum number of pods plant −−1 of blackgram (11.89) was observed in clipping of total apical leaves having no inflorescence which was statistically similar with no leaf clipping.…”

“…The probable reason for this may be the genetically potential of the variety that has helped in increasing pod length of blackgram variety. Sunil et al (2020) and Siddikee et al (2018) found similar result.…”

“…The higher biological yield of BARI Mash-3 as compared to BARI Mash-1 might be due to the accumulation of more dry matter and higher biomass potential. Mane et al (2018) and Siddikee et al (2018) was also found simila results. The maximum biological yield of blackgram (4868.20 kg ha −1 ) was observed in no leaf clipping, which was statistically similar to clipping of 2 nd basal leaves and the minimum (4360.70 kg ha -1 ) in clipping of total apical leaves having no inflorescence treatment.…”