Author (s): M. M. Islam1, A.K.M.R. Amin*2, M.F. Uddin3 and Khalequzzaman4
*Corresponding author: Email: ruhulsau@yahoo.com
*Corresponding author: Email: ruhulsau@yahoo.com
Abstract
A study was undertaken to evaluate the effect of varying cotton seed rates on the growth and yield of hill cotton grown together along with rice, sesame, maize and pumpkin at Hill Cotton Research Station, Balaghata, Bandarban and Soil Resource Development Institute (SRDI), Raicha, Bandarban during 2003, 2004 and 2005 kharif seasons. Seven levels of cotton seed rates were 12 kg cotton seed ha-1,16 kg cotton seed ha-1, 20 kg cotton seed ha-1, 24 kg cotton seed ha-1, 28 kg cotton seed ha-1, Sole cotton (20 kg ha-1) and farmer’s seed rate (14 kg cotton seed ha-1). The sole cotton was the treatment where only cotton was grown excluding other crops and used to compare the performance of the traditional Jhum system with this sole system. The seed rates used for other crops were the recommended ones for Jhum system. The highest mean seed cotton yield of 737 and 869 kg ha-1, respectively for Balaghata and Raicha were obtained from the sole cotton rate. The highest mean rice yields (Balaghata-1504 kg ha-1 and Raicha 1541 kg ha-1) were obtained from the lowest cotton seed rate. The highest gross margin for Balaghata and Raicha were 8,235 and 11,671Tk ha-1, respectively and the highest benefit cost ratio of 1.35 and 1.51 for Balaghata and Raicha, respectively were obtained from 20 kg cotton seed ha-1 treatment under Jhum system.
Key words: Cotton, Jhum, Seed rates, Hilly areas
J. Expt. Biosci. 3(1): January 2012
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