EFFECT OF NAPHTHALENE
ACETIC ACID ON GROWTH AND YIELD
PERFORMANCE OF FRENCH
BEAN
Authors: Ferdowsi Noor*,
Feroza Hossain and Umme Ara
*Corresponding
author E-mail: panna.noor@gmail.com
Abstract
Growth, physiology and yield responses of French bean
(Phaseolus vulgaris L. cv. BARI bush bean -1) to exogenous NAA (viz. o, 10, 30, 50, 70, 90 and 110 ppm)
application were studied. NAA were sprayed at 18 DAS. NAA
application significantly increased number of leaves, leaf area index (LAI), total dry matter (TDM),
crop
growth rate (CGR), net assimilation rate (NAR) and relative growth rate (RGR). NAA
had remarkable influence on pod length, number of fresh pods per plant, fresh
pod yield (g plant-1) and fresh pod yield (t ha-1) compared
to the control plants. NAA when treated at the rate of 50 ppm showed the
highest crop growth rate (26.56 g m-2 day-1), net
assimilation rate (17.07 g m-2 day-1), leaf area index
(3.25), total dry matter (35.62 g plant-1), number of fresh pod
(24.30 plant-1), fresh pod yield per plant (150..22 g) and fresh pod
yield per hectare (33.38 ton), which
were highly significant over those of the control (no NAA application).
Linear and positively significant correlations (r = 0.68 – 0.99) were observed
among growth parameters and almost all the yield components of french bean.
Key
words: French
bean, Foliar spray, NAA, Growth and Yield.
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Return Volume: Journal of Experimental Biosciences 6(2): July 2015
