EFFECT OF NAPHTHALENE ACETIC ACID ON QUALITY SEED PRODUCTION OF MUNGBEAN
Sarker, P. C.*, M. N. Islam, M. A. Hannan, R. Chakma, and A. Nessa
*Corresponding author, E-mail: sarkerparimalch@yahoo.com
Abstract
Quality mungbean seed is as a major concern for increasing mungbean production vertically in Bangladesh. A field study was conducted at the research field of Seed Technology Division, BARI, Joydebpur, Gazipur during 2009-2010 and 2010-11 to know the effect of doses and number of spraying of naphthalene acetic acid (NAA) on seed yield and quality of mungbean. Seven treatments viz., i) control, ii) 15 ppm NAA spraying 1 time, iii)15 ppm NAA spraying 2 times, iv) 30 ppm NAA spraying 1 time, v) 30 ppm NAA spraying 2 times, vi) 45 ppm NAA spraying 1 time, and vii) 45 ppm NAA spraying 2 times were imposed. Naphthalene acetic acid showed significant influence on pods/plant and seed yield of mungbean. The highest seed yield (1411.73 kg) of mungbean was produced by using 30 ppm NAA spraying 1 time. But maximum seed germination (> 84%) was observed in 15 ppm NAA spraying 1 time whereas 30 ppm NAA spraying 1 time gave more than 81% seed germination. Gross return, net return and benefit cost ratio were also observed to be the highest from 30 ppm NAA spraying 1 time.
Key words: Mungbean, foliar spray, seed germination, cost and return.
