Assessment of the use of agrochemical products in agriculture on the coastal area of Oualidia,Morocco

This work aims to identify cultural practices in the area of oualidia and identify the types of agrochemicals from a survey of agriculture in the region. with nine types of anti-cotyledons herbicides and 5 anti-grass herbicides were listed. also,three types of nematicides belonging to two different families are used to prevent against the rnk. only nemasol is intended to treat the bare ground. for insecticides,the most used are seven in number and are essentially specific for vegetable crops. for fungicides,they are five of them. the classification of 30 pesticides identified in oualidia allow to distinguish that 6% of highly hazardous pesticides are classified (fd) represented by the nematicides,20% are moderately hazardous (r) represented by fungicides and insecticides,60% are slightly hazardous (ld) mainly represented by herbicides. herbicides and pesticides are found at lower risk of use because 73.3% and 20% ld are unknown as with acute danger,only an herbicide illoxan ec 36 which is recognised md. the estimated flow of pesticides into the coastal aquifer has been studied based on seven differentiated active ingredients according to the survey as the most frequently used. the classification of active substances according to their toxicity aims to understand its toxicity of pesticides containing it. the study of risk factors for different active ingredients has detected three substances with great potential for groundwater contamination: fenamiphos content in nemacur methomyl content in lannate and salvador and 2.4 d in content anti-cotyledons herbicides,despite a rapid hydrolysis in water.