Sentences with phrase «kilograms of nitrogen fertilizers»
Not exact matches
Their results showed that farmers there use about 525 pounds of nitrogen fertilizer per acre (588 kilograms per hectare) annually — releasing about 200 pounds of excess nitrogen per acre (227 kilograms per hectare) into the environment.
https://dotearth.blogs.nytimes.com/
In a 2004 study in western Kenya, a co-author, Pedro Sanchez, and colleagues found that farmers used only about 6 pounds of nitrogen fertilizer per acre (7 kilograms per hectare)-- little more than 1 percent of the total used by Chinese farmers.