LONG-TERM EFFECT OF MANURE AND FERTILIZERS ON SOIL PHYSICAL AND CHEMICAL PROPERTIES AND YIELD OF GROUNDNUT
KrishiKosh
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Title |
LONG-TERM EFFECT OF MANURE AND FERTILIZERS ON SOIL PHYSICAL AND CHEMICAL PROPERTIES AND YIELD OF GROUNDNUT
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Creator |
YASMIN, C
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Contributor |
KEERTHI VENKAIAH
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Subject |
fertilizers, land resources, organic fertilizers, gypsum, yields, farmyard manure, crops, groundnuts, nutrients, carbon
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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. |
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Date |
2016-06-04T10:01:03Z
2016-06-04T10:01:03Z 2011 |
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Type |
Thesis
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Identifier |
http://krishikosh.egranth.ac.in/handle/1/66743
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Language |
en
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Relation |
D8981;
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Format |
application/pdf
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Publisher |
ACHARYA N.G. RANGA AGRICULTURAL UNIVERSITY
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