EFFECTS OF POTASSIUM AND IRRIGATION ON THE GROWTH AND YIELD OF POTATO (Solanum tuberosum L.) cv. DIAMANT

Abstract

An experiment was conducted in the year 2009-2010 at the Agro Service Centre (ASC), Bangladesh Agricultural Development Corporation (BADC), at Chehelgazi, Dinajpur to determine the optimum level of irrigation and potassium on the growth, yield and seed and non seed size of potato tuber cv. Diamant. In the analyses it was found that the combined effect of irrigation and potassium treatment at the level of I,K; gave the significantly highest yield (13.85 Kg / plot) out of 3 irrigations and 4 potassium levels. In the single effect of I3, the yield of tuber (12.72 Kg / plot) was significantly highest and at the level of K3, it was significantly higher (12.13 Kg / plot). Regarding the yield of seed size tuber / plant (184.20 g / plant) of the grade size 35-45 mm diameter was found significantly highest at combined treatment level of I;K3. The growth character such as plant height (66.47 cm), number of leaves per hill (259.90) and diameter of main stem per hill (7.16 mm) were significantly higher at the treatment level of I,. The treatment level of K; also gave similar result for these characters.