31.   Organic vintners grow their grapes without chemical fertilizers, weed killers or insecticides, or any other synthetic chemicals added during the winemaking process.

32.   Output was boosted further by better farming methods, more irrigation and more chemical fertilizers.

33.   Should I use an all-purpose chemical fertilizer, or the liquid fish kind?

34.   Should I use an all-purpose chemical fertilizer or the liquid fish kind?

35.   That same year, a truck loaded with the chemical fertilizer ammonium nitrate destroyed the Oklahoma City federal building.

36.   The bureaucratic collectivist nature of North Korean agriculture is decidedly inefficient and has involved the inappropriate cultivation of land and application of chemical fertilizers.

37.   The company is shutting down its chemical fertilizer operations, and analysts believe that it may pull out of the petrochemical business altogether.

38.   The first chemical fertilizer is patented in Baltimore.

39.   The lack of chemical fertilizer during the war also held down volume, which contributed to more intense fruit.

40.   They also fear the environmental damage caused by exposing the soil to chemical fertilizers and leveling hills to create farmland that may be subject to wind erosion.