An experiment was conducted from November 2018 through April 2019 at Noagaon village of South Sunamganj Upazila in Sunamganj District to observe the effects of fertilizers on the growth and yield of boro rice varieties. Two factors experiment was conducted using three rice varieties viz. V₁=BRRI dhan28, V₂=BRRI dhan29 and V₃=BRRI dhan58; and two fertilizers levels viz. F₁= N₁₃₈P_22.4K_63.5S_13.5Zn_1.3kg ha^-1 (FRG-2012) and F₂=N₅₇P₁₂K₁₂kg ha^-1 (Farmers’ practice) where Randomized Complete Block Design (RCBD) was followed and replicated thrice. Growth and yield data were recorded. Results of the experiment showed that growth performance was higher in V₁ followed by V₂. The highest spikelets panicle^-1 (253.23) and grains panicle^-1 (162.57) were recorded from V₂. F₁ also gave a higher performance in no. of spikelets panicle^-1 (189.81) and grains panicle^-1 (132.74) over F₂.  The highest 1000 grains weight (22.55 g) was observed in V₂ and higher (22.28 g) found in F₁. The highest grain yield of 7.66 t ha^-1 was produced in V_2, and the lowest yield (6.08 t ha^-1) was produced in V. The higher yield of 7.18 t ha^-1obtained from F₁ over F₂(6.23 t ha^-1). V₂ produced the 14 % higher grain yield (8.17 t ha^-1) with the application of F₁ over F₂. The highest BCR (1.54) was found when V₂ was treated with F_1, and the lowest BCR (1.19) was observed inV₁with F₂. In comparison to initial soil nutrients status as well as the organic matter was increased in post-harvest soil when applied balanced fertilizers.

Keywords: Variety, Haor, Balanced fertilizer, BCR, Nutrient status

A field experiment was conducted in the Dekar haor area under Sunamganj district during the period from November 2017 to February 2018 to evaluate the influence of fertilizer doses on the growth and yield of cabbage (Brassica oleracea). Four fertilizers doses viz. Recommended dose of N-P-K-S-Zn-B @ 240-88-100-32-4.5-1.5 kg ha-1 (F1), F1 + 25% of F1 (F2), F1 – 25% of F1 (F3), and Cowdung @ 10 t ha-1 (F4) were used in the experiment following randomized complete block design (RCBD) with three replications. Data on growth, yield and yield contributing parameters were recorded. Application of fertilizer doses resulted in variations of growth characteristics of cabbage. The tallest plants were observed due to application of 25% higher fertilizer over recommended dose (F2). The longest leaves 14.33 cm and 28.54 cm were recorded in 25% higher fertilizer over recommended rate at 15 and 45 DAT. Peak spreading area 69.47 cm was in 25% less than recommended fertilizer rate (F3) at 60 DAT. The largest head diameter 69.13 cm was observed due to application of recommended fertilizer dose and the lowest 53.07 cm was in cowdung application @ 10 t ha-1. The maximum gross yield (113.13 t ha-1) and the head yield (79.43 t ha-1) were obtained with the application of recommended dose of fertilizers (F1). The highest BCR 4.5 was observed in recommended fertilizer dose. The results revealed that national recommendation and 25% more than national recommended dose both produced promising cabbage yield in haor area.

Keywords: Recommended dose, cowdung, gross yield, head yield, BCR, national recommendation

The estimation of profitability and to investigate the factors affecting the yield of bitter gourd production at Narsingdi district in 2013 was designed. The study area was selected purposively and a total of 100 farmers were randomly selected. The stochastic Cobb-Douglas production frontier model was used for estimating the factors that affecting bitter gourd production. The study used both descriptive and functional analysis to achieve the objectives of the study. The study divulged that bitter gourd production was profitable in the study areas. Average yield of bitter gourd was found to be 27.5 ton ha-1 and average gross return was Tk. 5,50,000 ha-1. Total cost of production was found to be Tk. 3,06,810 ha-1. Net return and BCR was found to be Tk. 2.43,190 ha-1 and 1.79, respectively. The functional analyses suggested that human labour, Urea, TSP, cow dung and irrigation had positive and significant effect on the yield of bitter gourd in the study areas. Among different constraints, attacked by insect and diseases, lack of quality seed and high price of input were dominant in the study areas. Necessary steps from the concern authority are essential to solve the problems regarding bitter gourd cultivation and to increase the production as well as the income of the farmers in the study areas.

Keywords: Profitability, Bitter gourd, gross margin, net return, BCR, Cobb-Douglas