EFFECT OF IRRIGATION AND WEEDING ON THE YIELD COMPONENTS AND YIELD OF MUSTARD (SAU Sarisha-3)

Abstract

The experiment was conducted at the experimental field of Sher-e-Bangla Agricultural University, Dhaka during the period from October 2011 to February 2012 to study the effect of irrigation and weeding on the yield components and yield of mustard (SAU sarisha-3). In the experiment, the treatment consisted of four irrigation viz. I0 = no irrigation, I1=one irriation at 20 DAS (just before flowering), I2= Two irrigation, 1st at 20 DAS + 2nd at 40 DAS (during siliqua formation), I3=Three irrigation, 1st at 20 DAS + 2nd at 40 DAS + 3rd at 60 DAS (during seed maturation stage) and three different weeding viz. W0=No weeding (Control), W1= One weeding at 10 DAS, W2= Two weeding, 1st at 10 DAS + 2nd at 20 DAS. The experiment was laid out in two factors Randomized Complete Block Design (RCBD) (factorial) with three replications. Results showed that significant variations occurred among the treatments in respect of majority of observed parameters. Tallest plant (101.00 cm), maximum branches per plant (7.70), siliquae per plant (138.8), seeds per silliqua (20.06) and seed yield (1.98 t/ha) was produced by two irrigations. Tallest plant (102.10 cm), maximum branches per plant (7.90), siliquae per plant (131.50), seeds per silliqua (20.02) and seed yield (1.88 t/ha) was produced by two weedings. Shortest plant (98.49 cm), minimum branches per plant (7.17), siliquae per plant (111.9), seeds per silliqua (19.37) and seed yield (1.34 t/ha) was produced by no irrigations. Shortest plant (97.73 cm), minimum branches per plant (7.16), siliquae per plant (117.50), seeds per silliqua (18.82) and seed yield (1.60 t/ha) was produced by no weedings. The combinations of irrigation and weeding had significant effect on almost all parameters. Highest yield of seed per hectare (2.88 t) was obtained from two weedings and two irrigations treatment combination (I2W2). The control combination of irrigation and weeding (I0W0) produced the lowest seed yield per hectare (1.28t)