Effect of Nutrients on Physiology, Yield and Yield Components and Disease Indcidence in Blackgram [Vigna mungo (L.) Hepper]
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Date
2013
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Journal ISSN
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Publisher
UAS, Dharwad
Abstract
A field experiment was conducted during kharif 2012 to study the effect of nutrients
on physiology, yield and yield components and disease incidence in blackgram (Vigna mungo
L. Hepper) at Main Agricultural Research Station, University of Agricultural Sciences,
Dharwad. The experiment was laid out in complete randomized block design twelve
treatments with three replications. Foliar application of KNO3 (0.5%), MnSO4 (0.3%), ZnSO4
(0.3%), MgSO4 (0.5%), H3BO3 (0.2%), CuSO4 (0.2%), FeSO4 (0.3%), MnSO4 (0.3%) +
CuSO4 (0.2%), ZnSO4 (0.3%) + FeSO4 (0.3%), H3BO3 (0.2%) + CuSO4 (0.2%), KnO3 (0.5%)
+ FeSO4 (0.3%) and Control (unsprayed). The treatments were imposed at 30 DAS after
sowing.
Significant differences were observed for various morphological, dry matter
partitioning, biochemical and yield and yield attributes due to disease incidences. The foliar
application of nutrients significant increases in plant height, dry matter in leaf stem and
reproductive parts and total dry matter content was due to treatments as compared to control.
the growth parameters viz., LAI, AGR, CGR,NAR,SLW and LAD increased significantly due
to the application of MnSO4 (0.3%), followed by MgSO4 (0.5%). The biochemical parameters
viz., chlorophyll ‘a’ and ‘b’ and total chlorophyll content, nitrate reductase activity, and
peroxidase activity were significantly increased as compared to control due to the application
of 0.3% of MnSO4 followed by 0.5% of MgSO4 these treatments are less incidence of
diseases as compared to control.
The application of MnSO4 (0.3%), also recorded higher seed yield is followed by
0.5% of MgSO4 the application of MnSO4 (0.3%) + CuSO4 (0.2%), and H3BO3 (0.2%) +
CuSO4 (0.2%) also increased seed yield was due to higher number of pods per plant, pod
yield per plant, test weight, harvest index and quality parameters viz., crude protein content
were significantly increased due to the MnSO4 (0.3%) was less incidences of diseases. From
the point of economics MnSO4 (0.3%) was more effective followed by 0.3% of FeSO4 and
economically in increasing the yield and net returns.