In the 20th century, the arrival of intensive agriculture brought about the phenomenon of soil impoverishment. Chemical fertilization methods, the study of applied genetics, the mechanization of agriculture and the development of phytosanitary techniques have all increased agricultural production. Earthworm humus constitutes an authentic biological fertilizer in terms of organicmaterial and microbial population. The trials … Continua a leggere EARTHWORM HUMUS FOR THE GROWTH OF VEGETABLE PLANTS