-The Times of India   West Bengal chief minister Mamata Banerjee’s request for increased supply of urea as prices of nutrient based fertilizers are increasing has highlighted the challenges the Centre’s bid to reduce urea use and promote a more balanced product mix faces.  Arguing that farmers should not be asked to purchase costlier nutrient-based NPK (nitrogen, phosporus and potassium) fertilizer, Banerjee has asked Prime Minister Manmohan Singh for more urea for the...

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