GROWTH AND YIELD OF MUSTARD AS AFFECTED BY AGRONOMIC MANAGEMENTS

Abstract

A field experiment entitled “Growth and yield of Mustard as affected by agronomic managements” was carried out during Rabi season of 2018-19 at the Agronomy field of Sher-e-Bangla Agricultural University. The experiment was composed of two factors, viz., (i) Two varieties - V 1 ii = BARI Sarisha-14 and V 2

= BARI Sarisha-16 and (ii) Seven agronomic managements - M 1 = Control (No management), M 2 = No fertilizer but all other managements, M 3 = No weeding but all other managements, M 4 = No irrigation but all other managements, M 5 = No thinning but all other managements, M 6 = No pesticides but all other managements, M 7 = Recommended management. The treatments were replicated thrice in split-plot design. The soil of experimental plot was loam in texture, having pH 6.0 to 6.3 and low in organic carbon. Results revealed that varieties, different agronomic managements and their interaction significantly affected the growth and different yield parameters of mustard. The tallest plant (11.75, 72.48, 94.86 & 124.60 cm at 20, 50, 65 DAS & at harvest respectively), longest leaf (7.10, 15.80, 14.13 & 14.36 cm at 20, 35, 50 & 65 DAS respectively), highest values for branches plant -1 (3.12, 4.19 & 5.15 at 50, 65 & at harvest respectively), dry matter accumulation (0.52, 1.49 & 5.65 g plant at 20, 35 & 65 DAS respectively), SPAD value (49.55% at 50 DAS), no. of siliquae plant -1 (34.11), length of siliqua (4.09 cm), 1000-seed weight (3.94 g), seed yield (0.98 t ha -1 ), stover yield (3.57 t ha -1 ) and biological yield (4.5 t ha ) were observed higher in BARI Sarisha-16. Therefore, BARI Sarisha-16 performed superior than BARI Sarisha-14. But regarding plant population (189.38), leaf number (10.56, 14.41 & 20.59 at 35, 50 & 60 DAS), SPAD value (43.05% at 35 DAS) and seeds silliqua -1 (26.39), BARI Sarisha-14 performed better than BARI Sarisha-16. Among the agronomic managements, M 7 (recommended management) performed better that was similar with M 3 , M 5 and M 6 in some parameters. The lowest result was observed from M 1 (no management) treatment. Compared to that of recommended management, the highest yield reduction was observed for no management (33.90 %) that followed by no fertilizer (32.20 %), no thinning (22.03 %), no irrigation (18.64 %), no weeding (13.56 %) and no pest management (5.08 %). The V 2 M 7 (BARI Sarisha-16 with recommended management) performed better than all other combinations. So it may be concluded that highest priority should be given on fertilizer application, thinning and irrigation for mustard cultivation.