Nutritional requirement of bush pepper under different light intensities
By: Madhura Devadas.
Contributor(s): S Chandini (Guide).
Material type:
BookPublisher: Vellayani Department of Agronomy, College of Agriculture 1997DDC classification: 630 Online resources: Click here to access online | Click here to access online Dissertation note: MSc Abstract: A pot culture experiment was conducted at the Farming
Systems Research Station, Kottarakkara to study the influence of
NPK fertilizers under different light intensities on the growth
yield and quality of bush pepper. The treatments included three
levels of light (100, 75 and 50 per cent) three levels of each of
N, P (25, 37.5 and 50 g bush-1) and K (50, 75, 100 g bush-1).
The experiment was laid out in split plot design with three
replications.
Light intensities showed profound influence on the
length and number of primary and secondary branches, number of
leaves, leaf area, chlorophyll content of leaves, internodal
length and drymatter production. Best expression of all these
characters was under 50 per cent light. All these characters
showed a-declining trend as light intensity increased from 50 per
cent to 100 per cent light.
In the open condition better expression of all growth
characters were observed from low to medium level of nitrogen and
phosphorus (25 to 37.5 g bush-1). Under 75 per cent light better
expression of all growth characters was at medium level of N(37.5 g bush-1), K (75 g bush-1) and lowest level of P (25 g bush-1). Under 50 per cent light response to N levels was
not consistent for different growth parameters. The plant showed
positive response to P and K from medium to highest level (37.5
to 50 g bush-1).
Earlier flowering was observed at 50 per cent light.
Under all levels of light higher levels of N delayed flowering,
but incremental doses of P induced early flowering. Dry matter
production at all light intensities was more in low to medium
levels of nutrients.
Yield and yield attributes were not influenced by light
intensities. However maximum berry yield was recorded under 50
per cent light with 37.5 g N and 37.5 g P bush-1. Under 100 and
75 per cent light also maximum yield was recorded by plants
receiving 37.5 g each of N and P bush-1.
Quality of the produce was not significantly influenced
by the varying light levels. N levels had significant effect on
the volatile oil content and P levels on oleoresin content.
Maximum uptake .of all the nutrients was observed under
450 per cent light. There was a steady increase in the uptake of
all the nutrients with increasing dose of the three nutrients.
Under 100 per cent and 75 per cent light maximum uptake was from
medium to high level of the nutrients.
| Item type | Current location | Call number | Status | Date due | Barcode |
|---|---|---|---|---|---|
Theses
|
KAU Central Library, Thrissur Theses | 630 MAD/NU (Browse shelf) | Available | 171246 |
MSc
A pot culture experiment was conducted at the Farming
Systems Research Station, Kottarakkara to study the influence of
NPK fertilizers under different light intensities on the growth
yield and quality of bush pepper. The treatments included three
levels of light (100, 75 and 50 per cent) three levels of each of
N, P (25, 37.5 and 50 g bush-1) and K (50, 75, 100 g bush-1).
The experiment was laid out in split plot design with three
replications.
Light intensities showed profound influence on the
length and number of primary and secondary branches, number of
leaves, leaf area, chlorophyll content of leaves, internodal
length and drymatter production. Best expression of all these
characters was under 50 per cent light. All these characters
showed a-declining trend as light intensity increased from 50 per
cent to 100 per cent light.
In the open condition better expression of all growth
characters were observed from low to medium level of nitrogen and
phosphorus (25 to 37.5 g bush-1). Under 75 per cent light better
expression of all growth characters was at medium level of N(37.5 g bush-1), K (75 g bush-1) and lowest level of P (25 g bush-1). Under 50 per cent light response to N levels was
not consistent for different growth parameters. The plant showed
positive response to P and K from medium to highest level (37.5
to 50 g bush-1).
Earlier flowering was observed at 50 per cent light.
Under all levels of light higher levels of N delayed flowering,
but incremental doses of P induced early flowering. Dry matter
production at all light intensities was more in low to medium
levels of nutrients.
Yield and yield attributes were not influenced by light
intensities. However maximum berry yield was recorded under 50
per cent light with 37.5 g N and 37.5 g P bush-1. Under 100 and
75 per cent light also maximum yield was recorded by plants
receiving 37.5 g each of N and P bush-1.
Quality of the produce was not significantly influenced
by the varying light levels. N levels had significant effect on
the volatile oil content and P levels on oleoresin content.
Maximum uptake .of all the nutrients was observed under
450 per cent light. There was a steady increase in the uptake of
all the nutrients with increasing dose of the three nutrients.
Under 100 per cent and 75 per cent light maximum uptake was from
medium to high level of the nutrients.
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