EFFECT OF K, S AND Zn ON THE GROWTH AND YIELD OF BRRI dhan56 IN ACID SOIL OF SYLHET REGION

Abstract

An experiment was conducted at the farm of the Bangladesh Agricultural Development Corporation (BADC), Khadimpara, Sylhet 3100 during the period from August to November, 2014 to see the effect of K, S and Zn application on the performance of BRRI dhan56 regarding to growth, yield and yield contributing characters under the acidic soil in Sylhet region. The experiment consists of eight treatments viz, Control, K80, S12, Zn1.8, K80S12, K80Zn1.8, S12Zn1.8

and K80S12Zn1.8. The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications. Data were taken on plant height, number of tillers hill -1 , panicle length, grains panicle -1 , 1000-grain weight, grain and straw yields. Soil status of pre- and post harvest soil also analyzed to know the status due to KSZn application. Result revealed that all the characters except 1000– grain weight were affected significantly due to application of K, S and Zn where K80S12Zn1.8 produced the highest plant height (100.40 cm), effective tillers hill –1

(8.13), longest panicle (27.87 cm) and grains panicle –1 (146.60). The highest grain, straw and biological yield of 4.38, 6.03 and 10.40 t ha –1 , respectively was also produced from the treatment K80S12Zn1.8. The lowest performance was observed in the control treatment for all characters. The soil analysis showed that the nutrient content in post harvest soils under fertilizer applied soil was higher in comparison to initial soil.