EFFECT OF ORGANIC AND INORGANIC SOURCES OF NUTRITION ON SORGHUM + PEARL MILLET FODDER PRODUCTION, ASSOCIATED WEED FLORA AND SOIL PROPERTIES
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Date
2020-09-10
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CSKHPKV. Palampur
Abstract
A field experiment “Effect of organic and inorganic sources of nutrition on sorghum + pearl
millet fodder production, associated weed flora and soil properties” was conducted at Research Farm
of Fodder Section, CSKHPKV, Palampur during Kharif 2019. Soil of the experimental field was acidic
in reaction, high in organic carbon, low to medium in available nitrogen, medium in available
phosphorus and medium in available potassium. The experiment was laid out in randomized block
design with three replications, consisting of nine treatments having eight combinations of two nitrogen
levels (no nitrogen and 50 per cent of recommended nitrogen), two FYM levels (10 and 15 t/ha) and
two levels of Jeevamrit concentration (5 and 10 per cent), plus one treatment of recommended dose
of NPK (120, 60, 40 kg/ha) through inorganic sources. Treatments comprised of integrated nutrient
management (50 per cent recommended N + FYM + Jeevamrit) and recommended NPK behaving
alike resulted in better crop growth (emergence count, plant height, shoot number, leaf stem ratio, dry
matter accumulation), fodder yields (green and dry), crude protein content, crude protein yield and
lower weed population and weed dry matter accumulation compared to organically managed systems
with variable levels and concentration of FYM and Jeevamrit, respectively. The uptake of N, P and
K by crops was significantly higher with 50 per cent recommended N + 15 t/ha FYM + 10 per cent
Jeevamrit. Application of recommended NPK proved most profitable with highest net return (₹
59,018/ha) and benefit-cost ratio (2.75). Treatments with integrated use of 50 per cent recommended
N + FYM and Jeevamrit increased available soil nitrogen, phosphorus and potassium over initial
values and increase was highest with recommended NPK. The soil organic carbon and microbial
biomass carbon were highest with 50 per cent recommended N +15 t/ha FYM + 10 per cent Jeevamrit.