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EFFECT OF INTEGRATED USE OF ORGANICS AND INORGANICS ON GROUNDNUT IN SANDY LOAM SOIL

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Title EFFECT OF INTEGRATED USE OF ORGANICS AND INORGANICS ON GROUNDNUT IN SANDY LOAM SOIL
 
Creator VENKATA VANOJ, KATURI
 
Contributor PRASAD, P.R.K
 
Subject weeds, control methods, land resources, yields, sowing, peas, livestock, herbicides, planting, crops
 
Description A field experiment was conducted at the Agricultural College Farm, Bapatla
during khaif, 2011-2012 on “Effect of integrated use of organics and inorganics on
groundnut in sandy loam soil” to evaluate the conjunctive use of organics with
phosphorus on growth, yield, nutrient uptake of groundnut and also to study their
effect on available nutrient status, physico-chemical properties and physical
properties of the soil. The treatments consisted of control (without manure or
fertilizer), 100 per cent RDP through SSP and 10, 20, 30, 40 and 50 per cent
substitution of RDP through organics (vermicompost and pressmud). Uniform dose
of recommended nutrients were applied basally in the form of urea, SSP, MOP,
vermicompost and pressmud respectively to all the treatments and gypsum was
applied at flowering stage @ 500 kg ha-1 to all the treatments. Plant samples
collected at flowering and harvest were analysed for N, P, K, S, Zn, Fe, Mn and Cu
contents and their uptake by the crop was computed. Soil samples collected at
flowering and after harvest were also analysed for available N, P, K, S and DTPA
extractable Zn, Fe, Mn and Cu.
The results showed that the highest drymatter production, 100 kernel weight,
pod yield and uptake of macro and micronutrients were obtained by the application
of 50 per cent RDP through SSP and 50 per cent RDP through vermicompost.
Based on the analysis of the soil samples, the results showed that the physicochemical
properties viz., pH and EC were not significantly influenced by various
combinations of organic and inorganic treatments. The highest organic carbon
content in the soil was recorded by T7 (50% RDP through vermicompost + 50%
RDP through SSP) and it was on a par with all other integrated treatments during
both the stages (flowering and harvest). The highest available P2O5, K2O and S were
recorded by T2 treatment (100% inorganics) at flowering stage. N, Fe, Mn, Cu, and
Zn content were higher in T7 treatment at flowering stage and at harvest T7
treatment recorded the highest availability of all the nutrients and it was comparable
with T12 (50% RDP through pressmud + 50% RDP through SSP). Dehydrogenase
activity of soil at two stages of groundnut crop i.e., at flowering and harvest was
more in integrated treatments over only inorganic fertilizer application.
Vermicompost treatments performed better than the corresponding treatments of
pressmud. In all aspects the lowest values were recorded by control treatment.
Results of the experiment revealed the superiority of 50 per cent RDP
substitution with vermicompost in respect of growth, yield parameters and pod
yield. The integrated use of organics and inorganics not only increased the yield but
also mobilized more nutrients to the available pool, indicating its pivotal role in
sustaining the fertility status of sandy loam soil
 
Date 2016-06-21T14:06:51Z
2016-06-21T14:06:51Z
2012
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/67609
 
Language en
 
Relation D9395;
 
Format application/pdf
 
Publisher ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY