EFFECT OF SOLUBLE FERTILIZERS ON SOIL PROPERTIES, GROWTH AND YIELD OF POTATO (Solanum tuberosum L.)
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Date
2017-11-27
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UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU
Abstract
A field experiment was conducted during Kharif 2016 at College of Agriculture,
Hassan to study the effect of water soluble fertilizers on soil properties, growth and yield
of potato (Solanum tuberosum L.). The experiment was laid out in RCBD with eight
treatment combinations and three replications. Different concentrations of water soluble
fertilizers viz., 19:19:19 and potassium sulphate @ 100 %, 80 %, 60 %, 40 % and 20 %
of RDF were tested with conventional fertilizers viz., DAP, MOP and urea applied @ 100
% RDF as per POP (control). The water soluble fertilizers were supplied through micro
sprinklers in four equal splits at an interval of seven days starting from 20 DAS. The
results revealed that the higher tuber yield of potato (22.19 t ha-1) was recorded in
treatment with WSF @ 100 % RDF followed by treatment with WSF @ 80 % RDF
(21.28 t ha-1). These two treatments were found on par with each other but found
significantly higher than that of control. The percent increase in tuber yield were 26.94
and 21.74, respectively over control. This was attributed to significant improvement in
growth and yield attributing parameters and higher uptake of both macro and micro
nutrients by potato. Higher gross and net returns were noticed with WSF @ 100 % RDF
compared to other treatments. However, higher B:C ratio (3.21) was recorded in
treatment with WSF @ 80 % RDF indicating this rate of application is more profitable
than other WSF rates.
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