Influence of High Background Radiation on Coconut Nutrition
By: Rekha C.
Contributor(s): Balachandran P V(Guide).
Material type:
BookPublisher: Vellanikkara Department of Agronomy, College of Horticulture 1998DDC classification: 630 Online resources: Click here to access online | Click here to access online Dissertation note: PhD Abstract: An investigation on the influence of high background radiation on coconut
palms was conducted during 1994-97 at the College of Horticulture, Vellanikkara.
This study was carried out in the high background radiation areas of the coastal Kollam
district. A pot culture experiment was also conducted at the College of Horticulture,
Vellanikkara. Soil collected from the high background radiation area (Chavara) was
used for the study.
The radiation exposure of coconut roots and its influence on the root activity
of coconut palms, radiation profile of coconut rhizosphere, radionuclide
accumulation by coconut palms and the influence of organic matter application on
absorption of radionuclides by coconut palms were assessed. The main findings are
given below.
A wide variation in natural background radiation ranging from 200-8 200
nGy h-1 was observed in Chavara and adjoining areas. The radiation levels were
generally higher in the coastal areas compared to the inland.
232 Th was the major radionuclide contributing to the high radiation and its
content in soil ranged from 144 to 3580 ppm.
The results from root exposure studies indicated that plant roots are
continuously exposed to high radiation levels and a significant reduction in radiation
exposure occurred only at a depth of 1 m. Correlation and regression analyses
revealed a significant positive relation between surface radiation and the radiation
exposure at different soil depths.
The root activity studies employing 32P soil injection technique revealed that
the root activity of coconut palms in the high radiation areas was comparable with
that in the low radiation areas.
The studies on 232Th uptake and its distribution within coconut palm pointed
out that considerable accumulation of the absorbed 232Th occurs in roots and that only
a small fraction of it is translocated up to the leaves and nuts.
Application of organic matter, especially green leaf manure was found to be
highly effective in reducing the 232Th uptake by coconut seedlings growing in monazite
rich soil.
| Item type | Current location | Call number | Status | Date due | Barcode |
|---|---|---|---|---|---|
Theses
|
KAU Central Library, Thrissur Theses | 630 REK/IN (Browse shelf) | Available | 171371 |
Browsing KAU Central Library, Thrissur Shelves , Shelving location: Theses Close shelf browser
PhD
An investigation on the influence of high background radiation on coconut
palms was conducted during 1994-97 at the College of Horticulture, Vellanikkara.
This study was carried out in the high background radiation areas of the coastal Kollam
district. A pot culture experiment was also conducted at the College of Horticulture,
Vellanikkara. Soil collected from the high background radiation area (Chavara) was
used for the study.
The radiation exposure of coconut roots and its influence on the root activity
of coconut palms, radiation profile of coconut rhizosphere, radionuclide
accumulation by coconut palms and the influence of organic matter application on
absorption of radionuclides by coconut palms were assessed. The main findings are
given below.
A wide variation in natural background radiation ranging from 200-8 200
nGy h-1 was observed in Chavara and adjoining areas. The radiation levels were
generally higher in the coastal areas compared to the inland.
232 Th was the major radionuclide contributing to the high radiation and its
content in soil ranged from 144 to 3580 ppm.
The results from root exposure studies indicated that plant roots are
continuously exposed to high radiation levels and a significant reduction in radiation
exposure occurred only at a depth of 1 m. Correlation and regression analyses
revealed a significant positive relation between surface radiation and the radiation
exposure at different soil depths.
The root activity studies employing 32P soil injection technique revealed that
the root activity of coconut palms in the high radiation areas was comparable with
that in the low radiation areas.
The studies on 232Th uptake and its distribution within coconut palm pointed
out that considerable accumulation of the absorbed 232Th occurs in roots and that only
a small fraction of it is translocated up to the leaves and nuts.
Application of organic matter, especially green leaf manure was found to be
highly effective in reducing the 232Th uptake by coconut seedlings growing in monazite
rich soil.
There are no comments for this item.