6 months ago
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Soil tests successful Kuttanad, the atom vessel of Kerala, person revealed dangerously precocious aluminium concentrations successful paddy fields, posing a superior menace to harvest wellness and productivity.
Analyses of ungraded samples collected from paddy fields successful antithetic parts of Kuttanad and precocious Kuttanad by the Kerala Centre for Pest Management (KCPM), and tested astatine the Rice Research Station, Vyttila, nether the Kerala Agricultural University, showed aluminium levels ranging from 77.51 parts per cardinal (ppm) to 334.10 ppm. This is astir 39 to 165 times higher than the permissible level of 2 ppm oregon 2 mg per kg of ungraded for atom cultivation.
Smitha B., task director, KCPM, said the occupation was linked to expanding ungraded acidity. “We collected samples from 12 paddy fields, and each of them showed precise precocious aluminium concentrations. Aluminium becomes much soluble and toxic arsenic ungraded pH drops beneath five, with its availability expanding tenfold for each portion diminution successful pH. Excessive aluminium damages the works basal strategy and severely interferes with the absorption of indispensable nutrients specified arsenic phosphorus, calcium, potassium, and magnesium. In highly acidic soils, iron, on with aluminium, is besides contiguous successful quantities harmful to plants,” she said.
Officials said corrective measures indispensable absorption connected reducing ungraded acidity. “When ungraded acidity decreases, and the pH rises supra 5.5, the solubility of aluminium and robust declines, reducing their harmful effects. Effective power of ungraded acidity is imaginable lone done the exertion of liming materials and due leaching. The astir effectual materials for controlling excess aluminium are dolomite and calcium silicate,” said an official.
Threat to livelihood
Meanwhile, Kodikunnil Suresh, MP, said the alarmingly precocious aluminium contamination pointed to a “grave biology imbalance”. From an cultivation perspective, Mr. Suresh said the diminution successful ungraded productivity and the resulting important simplification successful paddy yields straight endanger the livelihoods of thousands of tiny and marginal farmers.
“The authorities should intervene urgently to scientifically measure the grade of aluminium contamination successful the Kuttanad region, place the sources of pollution, and instrumentality contiguous ungraded and h2o remediation measures,” helium said.
