Author (s): M. J. Ullah1, F. Hossain2 and Q. A. Fattah3


A field study with BARI Falon-1 and another with BARI Falon-2, were performed at Sher-E-Bangla Agricultural University Farm, Sher-E-Bangla Nagar, Dhaka during the kharif (summer) season of 2002. mDifferent concentrations of potassium naphthenate (Knap; (1300, 1400, 1500 and 1750 ppm) andnaphthalene acetic acid (NAA; 50 and 70 ppm) were tested along with a control to evaluate their effect on the nutritional status of fodder cowpea harvested at 90 and 105 days after sowing (DAS). Growth regulators were sprayed at 35 DAS. Growth regulators application increased the amount of protein, fat and ash contents wheras, decreased soluble carbohydrate contents at hoth DAS. The fodder of Falon-1 contained more protein and ash than that of Falon-2. In contrasts, Falon-2 contained more carbohydrate, fiber and fat than those in the fodder of Falon-1. Control showed the maximum soluble carbohydrate ranging from 34.93 - 41.38% and 38.57 -43.01% at 90 and 105 DAS respectively. In both the varieties, the fiber content increased with growth regulator applications at 90 DAS whereas decreased at 105 DAS. At 90 DAS, KNap1500-1750 ppm, NAA 70 ppm in BARI Falon-1 and NAA 50 ppm in BARI Falon-2 showed significantly higher fiber than other treatments in BARI Falon-1. Growth regulators significantly increased ash at both the stages but in BARI Falon -2 Knap 1300-1500 ppm showed significantly higher ash contents than other concentrations. KNap1500 ppm and NAA70 ppm showed higher fat content in both the varieties.

Key words: Cowpea, Vigna unguiculata, proximate, carbohydrate, protein, fat, minerals, ash

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J. Expt. Biosci.1(2):67-72, July 2010
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