Functional efficiency of organic meal in groundnut production
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Date
2000
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Department of Agronomy, College of Horticulture, Vellenikkara
Abstract
An experiment entitled "Functional efficiency of organic meal on
groundnut production" was carried out in the Department of Agronomy, College
of Horticulture, Kerala Agricultural University, Vellanikkara during Aug.-Dec.
1999. The main objectives of the study included the elucidation of functional
efficiency of organic meal in groundnut nutrition, its mechanism of influence in
relation to other mineral and organic sources and role of organics in soil rhizosphere
characteristics. The study also included the role of S on groundnut production and
its role in modifying the availability of P component of organic meal.
The Package of Practices-Recommendations (POP) with various P sources
and graded levels of organic meal with or without lime were tried in Randomized
Block Design with four replications.
Organic meal @ 1000-1500 kg ha-I without lime and POP where P was
applied as organic meal with elemental S were found to have pronounced effect on
various plant growth, nutrient uptake and yield attributing characters of groundnut.
These treatments also favoured the better oil and protein content and yield, which in
turn resulted in higher returns per rupee invested.
Addition of any form of organic manure IS necessary for the better
rhizosphere microbial activity in the soil. The very high yields of groundnut
resulted with depletion of soil organic carbon level, which necessitated a higher
level of application of organic matter to the soil, or incorporation of groundnut
residue to compensate it.
Nutrient use efficiency analysis suggested that the yield could be further
improved through altering the applied input level of Ca, P and S. This experiment
also conveyed that the present recommendation level of lime and sulphur was not
necessary for higher production in Vellanikkara situations. But additional amount
of phosphorus than POP recommendations for high yielding varieties of groundnut
like VRJ-4 is required.
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Citation
171681