Sentences with phrase «fertilizers on crop yields»

The effects of nitrogen and phosphorus fertilizers on crop yields are well - researched, of course.

Not exact matches

Farmers are earning huge profits on their wheat, soybeans, cotton and other crops; strong demand for (and relatively tight supplies of) grain, oilseeds and other key food inputs encouraged them to use large volumes of fertilizer (notably potash, phosphate and nitrogen) to boost their crop yields.

Just a tad less fertilizer on Midwestern farms could lead to big drops in nitrogen pollution in the Mississippi River without sacrificing crop yields, a new study shows.

The rapidly accumulating evidence of soil depletion over wide agricultural areas, the reduction in crop yields on improperly fertilized or unfertilized areas and on others, the reduction of fertility levels to the point where fertilizer applications represent the minimum subsistence diet, combined with an aroused public consciousness of the importance of soil fertility conservation and restoration, will inevitably lead to a demand that the chemical industry provide here the same high order of service which it offers elsewhere in meeting man's aspirations for more abundance and greater efficiency.

Most American's worked on farms in 1900, there were no petrochemical based fertilizers or pesticides, which only create mountains of soil run - off and mutated insects, to produce the same amount of crop yield.

Depending on nitrogen carryover from previous management, additional fertilizer may be required beyond that provided through cover crop mineralization to maximize corn yield.

Most TreeHugger readers probably a good handle on the concept that large monocropped fields have lesser biodiversity than more mixed cultivation, and that industrial agriculture uses excessive amounts of fertilizer to push crop yields to their maximum, even at the expense of decreasing soil fertility.