INFLUENCE OF DIVERSE ORGANIC SOURCES ON GROWTH AND YIELD OF SUNFLOWER (Helianthus annuus L.)
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Date
2019-08-16
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UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BANGALORE
Abstract
A field experiment was conducted at Zonal Agricultural Research Station, UAS,
GKVK, Bengaluru, during kharif 2018 to study the influence of diverse organic sources on
growth and yield of sunflower. The experiment was laid out in a RCBD design with eight
treatments replicated thrice. Application of Farm Yard Manure (FYM) on N eq. ha-1 + Bio
Digester Liquid Manure (BDLM) on N eq. ha-1 + jeevamrutha at 1500 l ha-1 + panchagavya
spray (7.5 %) recorded significantly higher seed yield (2195 kg ha-1) and oil yield (872 kg
ha-1) and it was on par with application of FYM on N eq. ha-1 + jeevamrutha at 1500 l ha-1
+ panchagavya spray (7.5 %) (1996 kg ha-1). The same treatments showed similar trend
with respect to growth and yield parameters and also nutrient uptake by the crop (nitrogen,
phosphorus, potassium). Soil fertility status improved with higher available nitrogen,
phosphorus and potassium (389, 43.32 and 273 kg ha-1, respectively). Significantly higher
bacteria, fungi, actinomycetes, N-fixers, P-solubilizers population and dehydrogenase
activity were recorded in soil with application of FYM on N eq. ha-1 + BDLM on N eq. ha-
1 + jeevamrutha at 1500 l ha-1 + panchagavya spray (7.5 %). Higher net returns ( 43,468
ha-1) and B:C (2.08) ratio were recorded with application of FYM on N eq. ha-1 + BDLM
on N eq. ha-1 + jeevamrutha at 1500 l ha-1 + panchagavya spray (7.5 %).