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LONG-TERM EFFECT OF MANURE AND FERTILIZERS ON SOIL PHYSICAL AND CHEMICAL PROPERTIES AND YIELD OF GROUNDNUT

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Title LONG-TERM EFFECT OF MANURE AND FERTILIZERS ON SOIL PHYSICAL AND CHEMICAL PROPERTIES AND YIELD OF GROUNDNUT
 
Creator YASMIN, C
 
Contributor KEERTHI VENKAIAH
 
Subject fertilizers, land resources, organic fertilizers, gypsum, yields, farmyard manure, crops, groundnuts, nutrients, carbon
 
Description A long term field experiment was started at the Regional Agricultural
Research Station, Tirupati of Acharya N.G. Ranga Agricultural University
during kharif, 1981.The present study entitled "Long-term effect of
manure and fertilizers on soil physical and chemical properties and
yield of groundnut" was undertaken during kharif 2010 with a prime
objective of monitoring the changes in soil physical and chemical properties
over a period of time. The soil of the experimental field was red sandy loam
(Haplustalf). The experiment has eleven treatments each replicated four
times in a randomized block design. The treatments include T1 : Control (no
manure or fertilizers), T2 : Farm yard manure @ 5 t ha-1 (once in 3 years), T3
: 20 kg Nitrogen (N) ha-1, T4 : 10 kg Phosphorus (P) ha-1, T5 : 25 kg
Potassium (K) ha-1, T6 : 250 kg gypsum ha-1, T7 : 20 kg N + 10 kg P ha-1, T8 :
20 kg N + 10 kg P + 25 kg K ha-1, T9 : 20 kg N + 10 kg P + 25 kg K + 250
kg gypsum ha-1 at flowering stage, T10 : 20 kg N + 10 kg P + 25 kg K + 100
kg lime ha-1 at flowering stage, T11 : 20 kg N + 10 kg P + 25 kg K + 250 kg
gypsum ha-1 + 25 kg zinc sulphate ha-1 (as basal, once in 3 years).Pod yield and yield attributing factors were studied along with
available soil nutrients and soil physical changes during kharif 2010. Soil
samples were collected from each plot at surface (0-15 cm) and subsurface
(15-30 cm) before sowing of crop. Soils were analysed for different
parameters.
The physical properties were improved in the plots which received
FYM (or) gypsum (or) lime (or) combination of nutrients along with
gypsum (or) lime. Among the treatments NPK + Gypsum + ZnSO4 treated
plot showed higher hydraulic conductivity, infiltration rate, maximum water
holding capacity and pore space with less bulk density.
Application of FYM and inorganic fertilizers with different
combinations to groundnut over a period of 30 years did not change soil pH
and EC significantly but markedly changed the organic carbon and available
nutrient contents of the soil. The available phosphorus and available
potassium were gradually depleted in all the treatments but the magnitude of
depletion was less in the treatments which received P and K respectively.
The build-up of exchangeable calcium and magnesium content of the soil
over a period of thirty years was observed. Application of gypsum or lime
increased the sulphur content of the soil over a period of thirty years to
rainfed groundnut. With respect to the micronutrients Zn was significantly
higher in NPK+gypsum+ZnSO4 treatment whereas the iron was highest in
N+P+K treatment as compared to others.
Pod and haulm yields were significantly influenced by the treatments.
The higher pod and haulm yields were observed in the treatment
NPK+gypsum+ZnSO4 treatment which received all major nutrients along
with secondary and micronutrient. The plots which received single nutrients
i.e., N or P or K alone and FYM alone are inferior as compared to the
combined application of nutrients. This shows the requirement of all the
nutrients for better crop growth and yields.
 
Date 2016-06-04T10:01:03Z
2016-06-04T10:01:03Z
2011
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/66743
 
Language en
 
Relation D8981;
 
Format application/pdf
 
Publisher ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY