Danger of excess pesticides use (Editorial)
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14/10/2008
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New Nation (Bangladesh)
Farmers of Rangpur may not achieve the production target of aman crops this season due to attack of pests. Pest attack may not remain confined to these areas. Agronomists identify inadequate use of potash and phosphate fertilisers as the main reason behind the attack. Due to inadequate use of the fertilisers plants do not gain strength and maturity necessary to resist pest attacks. As prices of fertilisers have multiplied, use of the above fertilisers has decreased alarmingly. However, the farmers have been advised to use insecticides to prevent the attacks.
Recovery of losses due to damage of standing crops by floodwater depends much on a successful harvest of the next crop. But achievement of the target seems uncertain because of late cultivation. Further damage of whatever crops have been cultivated will be disastrous for the farmers. Measures to ensure supply of quality insecticides must be taken to protect crops and prevent spread of pest attacks to other areas. But the farmers alleged that insecticides available in the district are adulterated and hence ineffective.
Precaution must be taken to ensure proper use of pesticides. Indiscriminate use of pesticides leads to larger pest-related yield losses than even not applying pesticides at all. Agricultural chemicals of different degrees of toxicity more or less affect human health and environment. Excessive use of pesticides often leads to resistance of pests to insecticides. Farmers must be made aware of the harmful effects of improper use of insecticides. To avert the harmful effects, strategy for location-specific integrated pest management (IPM) comprising of pesticide import, quality control, licensing, and pricing policies should be adopted. The use of natural parasites and predators like birds, frogs and fish is much effective method of IPM. According to experts, since IPM reduces pesticide costs with little loss of production, it seems to be more profitable than rice farming using insecticides.
Ariful Huq
Dhaka