MANAGEMENT OF PHOSPHORUS AND POTASSIUM IN FINGER MILLET UNDER ALFISOLS OF BANGALORE RURAL DISTRICT IN KARNATAKA
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Date
03-07-14
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University of Agricultural Sciences GKVK, Bangalore
Abstract
The effect of levels of phosphorus and potassium on growth, yield, nutrient
content of finger millet (Eleusine coracana L.), soil nutrient status, fractions of
phosphorus and potassium and phosphatase activity was studied in Alfisols of Bangalore
rural district. The growth and yield of finger millet crop was significantly higher in
treatment 100 % NPK (POP) + FYM + P and K solubilizer (T3). Nutrient content and
uptake (major, secondary and micro nutrients) by finger millet crop was also higher in
same treatment (T3). A decline in soil pH was recorded with increase in dosage of NPK
fertilizers and application of FYM along with biofertilizers. Significant decrease in EC,
OC, major, secondary and micronutrients status of soil after harvest of finger millet was
noticed in plots treated with fertilizers than in plots treated with FYM along with
inorganic and bio-fertilizers. The phosphorus fractions Al-P, Fe-P, Ca-P, Occl-P, Red-P
and total-P were high treatment with 100 % NPK + FYM + P and K solubilizer. The
water soluble, exchangeable and non exchangeable forms of K were relatively higher due
to addition of fertilizers and FYM along with biofertilizers. Acid phosphatase activity
was also higher in treatments receiving FYM and biofertilizers along with inorganic
fertilizers. Whereas alkaline phosphatase activity recorded was higher in NPK treated
plots compared to bio-fertilizer treated plots. Hence the application of recommended
doses of fertilizers in combination with FYM and bio-fertilizers helps in maintenance of
better soil health and available nutrient status of soil.
Description
Keywords
millets, potassium, fertilizers, farmyard manure, planting, nutrients, inorganic acid salts, crops, sampling, grain