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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
 
Creator SRINIVASAN, R
 
Contributor JEEVAN RAO, K
 
Subject Unable to Generate Tags d9225.pdf
SOIL QUALITY, RESIDUAL EFFECT, CABBAGE, BABY CORN
 
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.
 
Date 2016-06-06T12:55:47Z
2016-06-06T12:55:47Z
2012
 
Type Thesis
 
Identifier http://krishikosh.egranth.ac.in/handle/1/66846
 
Language en
 
Relation ;D9225
 
Format application/pdf
 
Publisher ACHARYA N. G. RANGA AGRICULTURAL UNIVERSITY