Navegando por Autor "Cunha, João Pedro Bufalari da"

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    Hipoclorito de sódio na limpeza de pulverizadores contaminados com herbicidas
    (Universidade Estadual do Norte do Paraná, 2022) Cunha, João Pedro Bufalari da; Gandolfo, Marco Antônio; https://orcid.org/0000-0003-2314-3752; http://lattes.cnpq.br/5560552732033631; Oliveira, Rone Batista de; https://orcid.org/0000-0002-3071-4827; http://lattes.cnpq.br/2379804514613050; Gandolfo, Ulisses Delvaz; https://orcid.org/0000-0001-6131-0289; http://lattes.cnpq.br/8520084377953959; Matsumoto, Leopoldo Sussumu; https://orcid.org/0000-0001-5102-545X; http://lattes.cnpq.br/0857955043436449; Rodrigues, Euripedes Bomfim; https://orcid.org/0000-0001-6531-878X; http://lattes.cnpq.br/9720688699522760
    Agricultural knowledge is constantly changing. Among these changes and knowledge is application technology and herbicides for weed control. Weeds, when not managed, negatively affect crop development. Due to the emergence of weeds resistant to certain active principles, many producers practice tank mixing of different types of herbicides in order to expand the spectrum of control. Due to the mixture of different agrochemicals and different formulations, cleaning the sprayer tank becomes essential so that injuries after use are avoided and so that the equipment's useful life does not occur. The objective of this work was to evaluate injuries caused by herbicides on sensitive plants after a hydraulic circuit cleaning process with different types of cleaning agents. Four spray circuits were used, consisting of a system with spray pump, mechanical stirrer, line filter, solenoid valve, flowmeter, spray bar, tip filter and six spray tips. The spraying units were contaminated with Roundup Transorb R® (3 L/ha) + Atectra® (1.5 L/ha) and Roundup Transorb R® (3 L/ha) + Zethamaxx (0.6 L/ha) and the cleaning agents used were: water and sodium hypochlorite. Evaluations were performed at 7, 14, 21, 28 and 35 days after application. The results showed that Qboa® increases the removal of agrochemicals and can be used as a cleaning agent.