ASSESSMENT OF SOIL QUALITY, RESIDUAL EFFECT AND YIELD OF ORGANIC AND INORGANICALLY GROWN CABBAGE-BABY CORN CROPPING SYSTEM
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Title |
ASSESSMENT OF SOIL QUALITY, RESIDUAL EFFECT AND YIELD OF ORGANIC AND INORGANICALLY GROWN CABBAGE-BABY CORN CROPPING SYSTEM
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Creator |
SRINIVASAN, R
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Contributor |
JEEVAN RAO, K
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Subject |
Unable to Generate Tags d9225.pdf
SOIL QUALITY, RESIDUAL EFFECT, CABBAGE, BABY CORN |
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Description |
A field experiment was conducted during rabi and kharif season of 2010- 2011 to study the assessment of soil quality, residual effect and yield of organic and inorganically grown cabbage-baby corn cropping system under sandy clay loam soil of Acharya N. G. Ranga Agricultural University, College Farm, Hyderabad, Andhra Pradesh. There were 12 treatments which involved the use of manures (FYM, VC, PM and PM); their combinations and fertilizers (100% NPK) as well as a control which were replicated thrice. The experiment was laid out in a Randomized Block Design. The bulk density, porosity and water holding capacity did not change significantly by the application of different levels of manures and fertilizers. The soil reaction (pH) values improved slightly in baby corn grown soil (7.97) as compared with cabbage (8.01). Significant variations in EC of soil were found in both the seasons but in cumulative baby corn (0.30 dS m-1) was better than cabbage (0.39 dS m-1). The combination of FYM and vermicompost was found better than others. The mean CEC value increased 25.37 to 27.43 c mol (p+) kg-1 during rabi 2010 cabbage to cumulative baby corn. The treatment, T12 (PM +NC) had significantly increased the CEC (32.03) than others. Name of the Author : R. SRINIVASAN Title of the thesis : ASSESSMENT OF SOIL QUALITY, RESIDUAL EFFECT AND YIELD OF ORGANIC AND INORGANICALLY GROWN CABBAGE-BABY CORN CROPPING SYSTEM Degree for which it is submitted : DOCTOR OF PHILOSOPHY Faculty : AGRICULTURE Department : SOIL SCIENCE AND AGRICULTURAL CHEMISTRY Major Advisor : Dr. K. JEEVAN RAO University ACHARYA N. G. RANGA AGRICULTURAL UNIVERSITY Year of Submission : 2012 Organic carbon of the soils significantly increased from medium (5.0 g kg-1) to high (> 7.5 g kg-1) in both the seasons. There was a gradual increase of the OC level from cabbage (9.1g kg-1) to cumulative baby corn (10.4 g kg-1). The available N of soil significantly increased in organic manure applied plots in the both seasons from 153.4 to 375.3 kg ha-1. Among the treatments combinations, T12 (PM+NC) had good response on improving soil available N and more residual release of nutrients (239.5 kg ha-1) towards the next season. Among the treatments, T8 (FYM+PM) significantly increased the available P (68.85 kg ha-1) than others. The plot applied with manures and recommended dose of fertilizers had significantly higher available K (305 kg ha-1) over the control (173.4 kg ha-1). Addition of organic manures resulted in increased DTPA extractable micronutrient content of the soil in both the seasons and residual effects of previous season. The plots treated with manures had shown more soil urease activity in cabbage and cumulative baby corn with corresponding values of 282.35 to 287 μg of NH4 + -N released g-1 soil h-1. Mean dehydrogenase activity of soil increased from cabbage to baby corn (7.16 to 9.32 μg of TPF produced g-1 soil d-1). In both the seasons, maximum dehydrogenase activity was observed in the treatment received FYM mixed with poultry manure. Among the manurial combination, significant phosphatase activity was observed from poultry manure combination treatments. Fertilizer treated plots had superior uptake of nutrients (N, P and K) in plants. Among the manurial combinations, the application of poultry manures, neem cake and FYM resulted in increased plant nutrient content. Most of the organic manure treated plots had higher protein and ascorbic acid content of cabbage and baby corn. Fertilizer treated plots got better response in term of yields of both the crops (18.75 to 38.91 t ha-1 and 2650 to 6127 kg ha-1) than manure treated plots. The factor analysis can help reduce the dimension of soil attributes into factor components that best account for soil quality (SQ) variability by minimizing the effect of data redundancy. Addition of different manures and their combination had some positive effect on soil quality parameters and the fact is underlined by the factor loadings by different soil quality parameters on the four principal components. Higher positive loading was observed from soil available nutrients and soil enzymes activities. Stepwise regression (backward) was done to analyse the relationship between the crop yield and the four principal components. The PC1 and PC3 components contributed more to the cabbage yield. In baby corn yield, PC1 had more positive loading from urease activity and available nitrogen. In incubation, fertilizer treatment (T2) had significantly higher release of soil nutrients (N, P and K) and enzyme activities in initial period but later on dominated by manures. In cabbage-baby corn cropping system, among the different treatment combinations, higher yield and B:C ratio was recorded (3.35) with 100% recommended dose of fertilizers followed by T12 (PM+NC) and T8 (FYM+PM) (2.41). Pooled data of economic analysis (from both the crops i.e., cabbage and baby corn) and direct + residual effect on cabbage during rabi 2010, maximum contribution and highest B: C ratio (2.02) was obtained with the combination of poultry manures and FYM (T8). To obtain higher income and to maintain better soil conditions, application of combination of 50 % RDN through poultry manure + 50 % RDN through FYM (T8) for cabbage- baby corn cropping sequence is recommended. |
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Date |
2016-06-06T12:55:47Z
2016-06-06T12:55:47Z 2012 |
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Type |
Thesis
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Identifier |
http://krishikosh.egranth.ac.in/handle/1/66846
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Language |
en
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Relation |
;D9225
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Format |
application/pdf
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Publisher |
ACHARYA N. G. RANGA AGRICULTURAL UNIVERSITY
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