International Conferences on Science and Technology Natural Science and Technology (ICONST–NST– 2019), Prizren, Kosova, 26 - 30 August 2019, pp.39-47
Various pesticides have been developed to combat weeds, one of the biggest problems of agricultural areas. These medicines, classified as herbicides, are intended for the destruction of foreign plants, which are competitor of cultivated crops in agricultural areas, during the germination stage or for drying adult plants. Herbicides are used in more than 480,000 tons. These synthetic or semi-synthetic chemicals are harmful to the microbiology of the agricultural soil used, the plant biota that produces harmless biodiversity and the human health through the accumulation of plants. Allelopathy is a research area that investigates the negative effects of fungi, bacteria or plants to each other and their natural causes. In this review, the toxic effects of plant sources against each other were examined and the studies that used these sources against weeds were mentioned.