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Four baby corn varieties viz. Hybrid baby corn-271, Shuvra, Khoibhutta and BARI sweet corn-1 were planted at five N fertilizer rates viz. 0, 80, 120, 160 and 200 kg N ha-1 in the experiment to find out the suitable variety and N fertilizer rate for baby corn production. The experiment was carried out at the Regional Station under Bangladesh Agricultural Research Institute at Jamalpur, Bangladesh during rabi season of 2008-09. Hybrid baby corn-271 and Shuvra took about 85 days and Khoibhutta and BARI sweet corn-1 took about 71 days to first silking. The results revealed that the highest values was recorded in variety Shuvra with 200 kg N ha-1 in most of the growth parameters which was statistically similar to 160 kg N ha-1. Number of ear plant-1 , length of ear, baby corn yield without husk and with husk varied significantly due to interaction of variety and N-rates. Baby corn yield without husk increased significantly with 160 kg N ha-1 and beyond this rate yield increment was not significant in Hybrid baby corn-271 and Shuvra while N-rate increased baby corn yield without husk significantly not beyond 120 kg ha-1 in Khoibhutta and BARI sweet corn-1. Number of cob plant-1 and length of cob were found the main yield parameters attributed to increased baby corn yield without husk.

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The experiment was conducted at the experiment stations of Bangladesh Agricultural Research Institute (BARI) at Joydebpur and Jamalpur during two consecutive seasons of November 2010 to June 2012 to find out the appropriate plant population of chili (var. Manikgonj local at Joydebpur and Jamalpur local at Jamalpur ) for intercropping with sweet gourd (var. BARI Sweet gourd 2) for higher productivity and economic return. The treatments were : T 1 = Sole sweet gourd (2.0 m x 2.0 m), T 2 =Sole chili (50 cm x 40 cm), T 3 = Sweet gourd (100%) + chili (100%), T 4 = Sweet gourd (100%) + chili (60%), T 5 = Sweet gourd (100%) +chili (50%) and T 6 = Sweet gourd (100%) + Chili (40%). Averaged over the years, fruit yield of sweet gourd was reduced significantly when intercropping with more than 50% chili. Intercropping sweet gourd with chili combination (100%) + chili (40%) gave the highest sweet gourd equivalent yield (35.74 t/ha and 17.95 t/ha), gross return (Tk. 357400/ha and Tk. 179500/ha), gross margin (Tk. 274346/ha and Tk.124600/ha) and benefit cost ratio (4.30 and 3.27), respectively at Joydebpur and Jamalpur. The maximum land equivalent ratio (1.52 at Joydebpur and 1.56 at Jamalpur) was also obtained from sweet gourd (100%) + chili (40%) intercropping system. The results revealed that 40% chili population (20,000/ha) might be optimum for intercropping with sweet gourd (100%) for higher productivity and economic return.

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