NUTRIENT SUBSTITUTION THROUGH ORGANICS IN MAIZE
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Date
2007-08-30
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University of Agricultural Sciences GKVK, Banglore
Abstract
A field experiment was conducted at the Main Agricultural Research
Station, Dharwad during kharif 2004 to study the nutrient substitution
through organics in maize. The experiment was laid out in randomized
block design with 11 treatments.
Significantly higher grain yield of maize (68.6 q/ha) was recorded in
FYM 7.5 t per ha + RDF compared to FYM 7.5 t per ha, VC 2.5 t per ha,
PTM 8 t per ha + 60% RON, VC 3 t per ha + 70% RDN and VC 4 t per ha +
60% RDN, while the lowest grain yield (37.9 q/ha) was recorded in VC 2.5
t per ha.
Application of FYM 7.5 t per ha + RDF per ha recorded higher N, P,
K uptake (178.69 kg N, 44.31 kg P2O5, 180.01 kg K20/ha) by maize crop
and available NPK status in soil (N - 363 kg, 50,5 kg P2O5 and 493 kg
K20/ha) after harvest.
Maximum net returns (Rs. 28,800/ha) was realized by RDF
treatment and it was on par with FYM 7.5 t per ha + RDF (Rs. 28,200/ha).
Maximum B:C ratio (3.63) was noticed in RDF treatment.
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