INFLUENCE OF POTASSIUM AND SULFUR ON GROWTH AND YIELD OF POTATO DERIVED FROM TPS SEEDLING TUBER

Abstract

The experiment was carried out at the research field of Sher-e-Bangla Agricultural University, Dhaka, during the period from 10 November 2010 to 10 March 2011 to investigate the effect of potassium and sulfur on morpho-physiological characters, yield attributes and yield of potato. The experiment comprised of four different doses of potassium (0, 117, 130, 43 kg ha -1 ) along with sulfur (0, 24, 29 and 34 kg ha ). The experiment was laid out in split plot design with three replications. The growth parameters such as plant height, stems hill -1 , leaves hill -1 -1 , total dry mass (TDM) plant

and TDM m -2 , yield attributes such as tubers hill -1 and single tuber weight and tuber yield and marketable yield were significantly influenced by potassium and sulfur. Results revealed that, number of leaves hill -1 , stems hill -1 , plant dry matter content, tuber dry matter content, tubers m -2 , seed yield, marketable yield significantly increased with increasing potassium levels, whereas, plant height decreased with increasing potassium level. On the other hand plant dry matter content, tuber dry matter content, stems hill , tubers m -2 , seed yield, marketable yield increased significantly with increasing sulfur level. While plant height, number of leaves hill -1 and tubers m -2 decreased with increasing sulfur level. Combined effect of potassium and sulfur reveled taht the highest number of tubers m -2 was achieved by 130 kg potassium ha -1 with 34 kg sulfur ha . But 130 kg potassium ha -1 with 29 kg sulfur ha -1 produced more 45-55 mm sized tuber than 130 kg potassium ha -1 with 34 kg sulfur ha -1 . Application of 130 kg potassium ha with 34 kg sulfur ha -1 produces more <28 mm sized tuber than that of 130 kg potassium ha with 34 kg sulfur ha -1 . Finally 130 kg potassium ha -1 with 29 kg sulfur ha -1 produced numerically highest yield but statistically similar with 130 kg potassium ha

-1 -1 -1 -1 with 34 kg sulfur ha -1 . -1 -1