The experiment was conducted at the research field of Agricultural Research Station, Rajbari, Dinajpur during rabi season of 2016-17 and 2017-18 to develop a profitable and economic fertilizer dose for Bt. begun and to increase the productivity and yield of begun in the northern region of Bangladesh . Five different treatments were employed in this study viz. T1= STB Recommended dose i.e. 113-23-74-15-2-1 kg/ha of NPKSZnB+3 tha-1poultry manure (FRG’ 2012), T2= T1+25% of NPK i.e. 141-29-93-15-2-1kg/ha of NPKSZnB+3 tha-1poultry manure, T3 = T1+50% of NPK i.e. 169-34-111-15-2-1kg/ha of NPKSZnB+ 3 tha-1poultry manure, T4 = T1+25% of NPK+3 tha-1poultry manure i.e. 141-29-93-15-2-1 kg/ha of NPKSZnB+6 tha-1poultry manure, T5 = T1+3 tha-1poultry manure i.e. 113-23-74-15-2-1 kg/ha of NPKSZnB+6 tha-1poultry manure. The experiment revealed that the highest fruit yield (43.47tha-1) was recorded in T3. This was due to the positive influence of poultry manure on the growth and yield of brinjal in respect of the elongation of brinjal plant, availability of other macro and trace elements, improvement in soil physical structure and water holding capacity. The highest gross return (Tk. 347760 ha-1), gross margin (Tk. 255170 ha-1) and BCR were also obtained in T3, whereas the lowest gross return (Tk.55300 ha-1), gross margin (Tk.143840 ha-1) and BCR were obtained from the treatment T1.
Key words: BARI Bt. Begun-1, Poultry manure, Fertilizer, Yield
Bangladesh is one of the major horticultural countries in South Asia (Ali, 2000). Agriculture, including horticulture, is the largest single sector of the economy, accounting for about 13 percent of the country’s GDP (BER, 2006). Brinjal (Solanum melongena L.) is an important vegetable for its commercial and nutritional value in the world as well as in Bangladesh. “Begoon” (Brinjal or Eggplant) is a very common and favorite vegetable in Bangladesh which has a link with the social, cultural and economic lives of rural people. Brinjal has been a staple vegetable in our diet since ancient times. It is one of the major vegetables and its production ranks third among all vegetables in the world. It is grown all over the world, though there is a heavy concentration in Asia. China is the largest producer followed by India. China has a 60.67 percent share of world production, while India’s share stands at 25.70 percent (Meherunnahar and Paul, 2012). Vegetables in much of Asia and the Pacific region are grown by small-scale farmers who are unorganized and scattered in different locations (Shin, 2001), Although Bangladesh produced huge amount of brinjal it is only a fraction of the world’s production. Brinjal is second most important vegetable in Bangladesh in terms of both, production area and yield, only surpassed by potatoes. In Bangladesh, over 1,15,424 hectare of total cultivable land is devoted to brinjal cultivation (BBS, 2011). It is cultivated in the agricultural fields as cash crop in the commercial vegetable growing areas and almost every rural household has few brinjal plants in the kitchen garden. In Bangladesh brinjal is classified into two categories in respect of production period such as rabi brinjal and Kharif brinjal. Though it is more or less available throughout the year, its peak supply comes during December to April. Brinjal grown in Bangladesh are of different varieties with differing in size, shape and color as well.
However, Bangladesh is obtained the food sufficiency but the nutritional point of view; it has far away from achieved the safety and quality food production. Now Bangladesh introduced Bt. brinjal, has the