Author (s): M. J. Ullah1*, F. Hossain2 and Q. A. Fattah3
*Corresponding author, E-mail:jafarullah58@yahoo.co.uk
*Corresponding author, E-mail:jafarullah58@yahoo.co.uk
Abstract
Two field experiments, one with BARI Falon-1 and another with BARI Falon-2 were carried out at Sher-E-Bangla Agricultural University Farm, during the kharif seasons of 2001. Different concentrations of potassium naphthenate, (KNap 1000-2000 ppm) and naphthalene acetic acid (NAA 30-110 ppm) and combinations of two KNap concentrations (1100 and 1200 ppm) and two NAA (30 and 40 ppm) were tested along with a control. Irrespective of treatment and varieties, plant height increased up to 90 DAS. Growth regulators affected plant parameters in both the varieties. Increase in plant height was more pronounced with the higher concentrations of NAA (70 –110 ppm) than that with KNap. Time to flowering and maturity and duration between these parameters were elongated at or over 1200 ppm of KNap and 70 ppm of NAA. BARI Falon -2 matured later (64 days) than BARI Falon-1 (55 days). BARI Falon-1 produced markedly higher dry matter (68-73 g plant-1) than that of BARI Falon-2 (61-67 g plant-1). Concentration of KNap at 1500-1750 ppm produced significantly higher dry matter (71-73 g plant-1) in BARI Falon-1. But significantly higher seed yield was obtained with KNap 1500 ppm and NAA 70 ppm in BARI Falon-2 (1.43-1.55 g plant-1).
J. Expt. Biosci. 2(1): January 2011
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