Green Global
Foundation   Journal
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EFFECT OF IRRIGATION LEVELS ON THE YIELD OF GROUNDNUT (Pages : 17 - 21)

The experiment was conducted in the research field of Irrigation and Water Management Division (IWM), BARI, Gazipur during the rabi seasons of 2010-2011 and 2011-2012 to find an appropriate irrigation schedule for optimum yield of groundnut. There were five irrigation treatments and each is replicated thrice in a randomized complete block design (RCBD). According to the investigation results showed that in the first year, the highest yield (2.10 t/ha) and the lowest yield (1.30 t/ha) were obtained in the treatments of T1 (no water stress) and T5 (water stress at vegetative and pod formation stages), respectively. Whereas, in the second year, the highest (1.65 t/ha) and the lowest (1.34 t/ha) yields were obtained in the treatments of T5 and T3 (irrigation at vegetative, pod formation and seed filling stage), respectively. The flowering and pod formation stages were critical stage of groundnut cultivation. The highest and lowest seasonal water were used 329 mm and 209 mm in the treatments of T1 and T5, respectively for the first year, but in the second year these values were obtained 204 mm and 124 mm in the same treatments including an effective rainfall of 164 mm and 68 mm, respectively. The highest benefit cost ratio (BCR) of 1.55 was found in the treatment of T5 while the lowest BCR of 1.04 was obtained from treatment of T1 in the second year.Download