EFFECT OF MUNGBEAN AND COWPEA BIOMASS INCORPORATION
ON TRANSPLANTED AMAN RICE
Authors: K. N. Islam*,
S. Hasna, G. N. Hasan, M. M. Islam and F. Ahmed
Corresponding
author, E-mail: kbd_nazrul@yahoo.com
Abstract
The experiment was conducted at farmers’
fields of Patuakhali sadar, Borguna sadar, and Barisal sadar, to reduce fertilizer
requirement in succeeding T. aman rice and to improve soil health through
incorporation of mungbean/cowpea biomass to soil in Mungbean/Cowpea-Fallow-T.aman
cropping pattern during 2012-13 and 2013-14. Three treatments were, T1=No
biomass incorporation+Recommended fertilizer (RF) for T.aman, T2=Mungbean
biomass incorporation + 50% of RF for T.aman, T3=Cowpea biomass incorporation+50%
of RF for T.aman. Results revealed that comparatively higher yield of T. aman was
observed in the treatments T2 and T3 as compared to T1.
During the growing period high temperature encouraged vegetative growth of
mungbean and cowpea. As a result, pod formation was high. The incorporation of mungbean/cowpea
biomass along with chemical fertilizers produced identical grain yields of T.aman
rice with 50% of recommended fertilizers. The incorporation treatments had
positive effect on succeeding T.aman rice. Considering the whole cropping
system the productivity was higher. The findings of the research indicate that
incorporation of biomass + 50% of recommended fertilizers application could
increase yields substantially as compared to no biomass incorporation with 100%
of recommended fertilizers in T.aman rice. Besides, the biomass incorporation
helped maintain soil fertility, preventing further soil degradation.
Keywords: Mungbean and cowpea biomass incorporation and T. aman
yield.
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Return Volume: Journal of Experimental Biosciences 6(2): July 2015
