Thais Q. Z. Cesar, A. D. Silva, L.F.V. Purquerio, A. Santos
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ANALYSIS OF FERTIGATION EFFLUENTS FROM MINI-TOMATO GREENHOUSES AND THE NEED FOR DETECTION OF CONTROL POINTS
Water supply quality, nutrient availability in irrigation solutions, and discharge water or effluents must be monitored for protected cultivation to achieve sustainable management of food production. This study aimed to evaluate whether effluent solution from mini-tomato-protected crops can be recycled in an irrigation system based on plant nutritional demands. The experiment was carried out on a farm with mini-tomato protected-cropping. Water supply, as well as nutrient and effluent solutions, were analyzed in the experiment. Water supply was within the Brazilian limits established by CONAMA, except for nitrite, phosphorus, and sulfide. The effluent solution showed significant concentrations of macro-and micronutrients
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