Sustainable Nutritional Practices For Bittergourd-Amaranthus Intercropping System
By: Renu C Nair.
Contributor(s): Meera Bai M (Guide).
Material type:
BookPublisher: Vellayani Department of Agronomy, College of Agriculture 2003DDC classification: 630 Online resources: Click here to access online Dissertation note: MSc Abstract: A field experiment was conducted at the Instructional Farm, College of
Agriculture, Vellayani during 2001-2002 to identify sustainable nutritional
practices for enhancing the yield, quality and income from bittergourd and to
assess the economics of intercropping amaranthus in bittergourd. The experiment
consisted of seven nutrient sources and two cropping systems and was laid out in
factorial RBD with three replications.
The various nutrient sources as well as cropping system exerted significant
influence on growth parameters and yield attributing characters of bittergourd.
Application of 50 per cent N as poultry manure + 50 per cent N as chemical
fertilizer significantly increased the growth, yield attributes and the total yield.
Bittergourd grown as pure crop showed increase in growth parameters, yield
attributes and yield.
The nutrient sources influenced the quality characters of bittergourd.
Keeping quality was higher for vermicornpost treatment while ascorbic acid
content and iron content were higher for the integrated application of poultry
manure and chemical fertilizer.
Highest value for NPK content of plants and NPK uptake was obtained
when chemical sources of nitrogen was substituted with poultry manure in I: 1
ratio.
The soil physical properties were improved significantly by the application
of organic manures alone. Soil available nitrogen and potassium were higher for
the treatment in which 100 per cent N was applied as vermicompost.
98
The depth of root penetration was not affected by intercropping in
bittergourd and amaranthus. The root spread was more in amaranthus when
grown as an intercrop compared to sole cropping.
The nutrient release pattern of organic manures had shown that there is a
progressive increase in the availability of Nand P20S till the 90th day and for
available K20 there was a progressive increase upto 60th day and thereafter
decreased. Among the three organic manures, poultry manure showed higher
availability of the three nutrients.
The economics of cultivation revealed that application of 50 per cent N as
poultry manure + 50 per cent N as chemical fertilizer gave the maximum net
returns and benefit-cost ratio. The net returns and B:C ratio were higher under
bittergourd-amaranthus intercropping system compared to sole crop of
bittergourd.
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MSc
A field experiment was conducted at the Instructional Farm, College of
Agriculture, Vellayani during 2001-2002 to identify sustainable nutritional
practices for enhancing the yield, quality and income from bittergourd and to
assess the economics of intercropping amaranthus in bittergourd. The experiment
consisted of seven nutrient sources and two cropping systems and was laid out in
factorial RBD with three replications.
The various nutrient sources as well as cropping system exerted significant
influence on growth parameters and yield attributing characters of bittergourd.
Application of 50 per cent N as poultry manure + 50 per cent N as chemical
fertilizer significantly increased the growth, yield attributes and the total yield.
Bittergourd grown as pure crop showed increase in growth parameters, yield
attributes and yield.
The nutrient sources influenced the quality characters of bittergourd.
Keeping quality was higher for vermicornpost treatment while ascorbic acid
content and iron content were higher for the integrated application of poultry
manure and chemical fertilizer.
Highest value for NPK content of plants and NPK uptake was obtained
when chemical sources of nitrogen was substituted with poultry manure in I: 1
ratio.
The soil physical properties were improved significantly by the application
of organic manures alone. Soil available nitrogen and potassium were higher for
the treatment in which 100 per cent N was applied as vermicompost.
98
The depth of root penetration was not affected by intercropping in
bittergourd and amaranthus. The root spread was more in amaranthus when
grown as an intercrop compared to sole cropping.
The nutrient release pattern of organic manures had shown that there is a
progressive increase in the availability of Nand P20S till the 90th day and for
available K20 there was a progressive increase upto 60th day and thereafter
decreased. Among the three organic manures, poultry manure showed higher
availability of the three nutrients.
The economics of cultivation revealed that application of 50 per cent N as
poultry manure + 50 per cent N as chemical fertilizer gave the maximum net
returns and benefit-cost ratio. The net returns and B:C ratio were higher under
bittergourd-amaranthus intercropping system compared to sole crop of
bittergourd.
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