EFFECT OF VARIED LEVELS OF SULPHUR AND SOURCES OF ORGANICS ON GROWTH AND YIELD OF SOYBEAN
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Date
2017-11-03
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UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU
Abstract
A field experiment was conducted during kharif 2016 to study the “Effect of
varied levels of sulphur and sources of organics on growth and yield of soybean in
Alfisols of Karnataka” at Palanahalli, Magadi taluk Ramanagara. The experiment
comprised, application of 50% and 100% of NPK fertilizers, varied levels of sulphur and
sources of organics in combination with seventeen treatments replicated thrice with
RCBD. The experimental results revealed that application of 100% RDF+ poultry manure
at 6 t ha-1 + sulphur at 40 kg ha-1 through gypsum (T9) recorded significantly higher plant
height (74.81 cm), number of branches (10.97), dry matter content (36.33 g plant-1), pod
yield (30.30 q ha-1), seed yield (26.90 q ha-1), straw yield (44.15 q ha-1), protein yield
(1090.80 kg ha-1), oil yield (578.35 kg ha-1) and fibre content (8.86%) . But, it was on
par with treatment T8 which received 100% RDF + poultry manure 6 t ha-1 + sulphur 20
kg ha-1 through gypsum as compared to rest of the treatments. Higher uptake of major and
micronutrients was also recorded in the T9 treatment. Maximum available nitrogen
(281.33 kg ha-1), phosphorus (45.55 kg ha-1) and potassium (295 kg ha-1) were recorded
in T8 which received 100 % RDF + poultry manure at 6 t ha-1 + sulphur 20 kg ha-1
through gypsum (303.13 kg ha-1). However, higher B: C ratio (3.41) was recorded in T9
which received 100% RDF + poultry manure 6 t ha-1 + sulphur 40 kg ha-1 through
gypsum.
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