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Effects of applied cadmium on its accumulation, dry matter production and net photosynthesis in okra and amelioration of cadmium toxicity through lime application

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Title Effects of applied cadmium on its accumulation, dry matter production and net photosynthesis in okra and amelioration of cadmium toxicity through lime application
Not Available
 
Creator Raychaudhuri, S.
Raychaudhuri, M., Rautaray, S.K. and Chowdhury, S.R
 
Subject metal contaminant, Net photosynthesis, Soil pH, Transfer factor, Translocation factor
 
Description Not Available
Aim:
Methodology:
Results:
Interpretation:
Key words:
Vegetables grown in cadmium contaminated soils accumulate cadmium in their tissues and are risky
for consumption. The aim of the study was to get an insight into the effect of different levels of cadmium in
soil, on accumulation in different plant parts of okra and its effect on overall growth, biomass production and
photosynthesis rate so that suitable management option is explored to produce safe vegetable in cadmium
contaminated soils.
The study was conducted in replicated pots with three soil pH (5.46, 6.54 and 7.45) attained
-1 through addition of CaCO as main treatment and four Cd levels viz., 0, 3, 6 and 9 mg kg of soil as sub- 3
treatment. Okra (Abelmoschus
esculentus) was taken as the test
crop. The experiment was conducted
in a net house.
The Cd concentrations
were minimum in fruits (0.54, 0.31
-1 and 0.14 mg kg ) and higher in
leaves at acidic pH (5.5), while in soil
limed to slightly acidic (6.5) and
alkaline pH (7.5) roots retained
maximum Cd among plant parts. Net
photosynthesis and biomass
production decreased significantly
with higher Cd doses at acidic pH
(5.5). The rate of decline in net
photosynthesis was lesser at higher
soil pH. The transfer factors
decreased with increase in soil pH.
The DTPA extractable soil Cd
decreased from 8.5 to 2% when soil
pH increased rendering the Cd less
available for plant uptake.
Liming can be an
effective ameliorative measure to mitigate Cd toxicity in acidic soils and can ensure safe consumption. Lowest accumulation of cadmium in fruit part suggests okra to be a potential vegetable crop for Cd polluted soils.
Not Available
 
Date 2019-11-06T08:09:49Z
2019-11-06T08:09:49Z
2018-07-02
 
Type Article
 
Identifier Raychaudhuri, S., Raychaudhuri, M., Rautaray, S.K. and Chowdhury, S.R. 2019. Effects of applied cadmium on its accumulation, dry matter production and net photosynthesis in okra and amelioration of cadmium toxicity through lime application. Journal of Environmental Biology, 40:143-150.
p-ISSN: 0254-8704 e-ISSN: 2394-0379
http://krishi.icar.gov.in/jspui/handle/123456789/24518
 
Language English
 
Relation Not Available;
 
Publisher Triveni Enterprises (India)