EFFECT OF NITROGEN AND BORON ON GROWTH AND YIELD OF MUSTARD (Brassica campestris cv. Tori-7)

Abstract

A field experiment was eondLzcted at the rnsearch Ihrrn of Sher-e-lIangla Agricultural University, Dhaka. Bangladesh during the rahi season of 2005-06 to study the elects of nitrogen (N) and boron (B) on growth, yield and yield attributes of mustard cv. Tori-7. The experiment was laid out in a Randomized Complete Rlock l)esign (RCBD) with 3 (three) replications of each treatment. There were 16 treatments. The treatments consisted of4 (four) levels ofN (0, 50, 100 and 150 kg haj designated as No, N50, Mo o , and N1 50, respectively and 4 (four) levels of B (0, 1, 2 and 3 kg ha') designated as 13, B, B2 and B3 , respectively. There was a positive impact of each nutrient and their interaction on growth. yield and yield attributes of mustard. All the plant parameters were increased with increasing level of N except number of branch per plant, weight of 1000 seeds and seed yield. The highest seed yield (1.62 t/ha) was obtained with application of N @100 kg/ha and the minimum was recorded in No (control) treatment. Similarly, application of 2 kg/ha produced the highest yield of 0.97 i/ha, which was 31% higher over control (0.74 i/ha). The combined effect of N and 13 had positive impact on growth, yield. nutrient uptake and yield attributes of mustard. 1hc tallest plant height (73.28 cm), B (

maximum number , N1 ;0 ., ofsiliquae (169.7/plant) and root weight (0.37 i/ha) were observed in R; treatment. The highest seed yield (1.96 t/ha). stover yield (5.54 i/ha). biological yield (7.5 i/ha), number of seeds (16.3/ siliqua) and number of branches (5/plant) were obtained from N 1 36132 N j032 treatment. The highest N, B. K and S uptake by seeds was found in treatment, but the highest P uptake was found in N 150133 treatment. From the present findings it can he interred that application of N @ 150 kg/ha and B @2 kg/ha is the most suitable combination to achieve the highest seed yield (1.96 i/ha) of mustard which was 165.0% higher over control treatment (0.74 i/ha).