Heather Murdock ABUJA ? The Nigerian government said it subsidizes the cost of fertilizer, but some farmers say they never see a discount, paying as much as $40 a bag. In the Niger Delta region, some chicken farmers are offering a solution. They say they are turning their quot;waste into wealthquot; by selling chicken manure for less than a few dollars a bag. Alice Umukoro is a vegetable farmer in the oil-rich Niger Delta. Fertilizer, she said, is supposed to be...