Technical parameters of the application technology applied to hydropneumatic spraying in different operating conditions

• Autor(a) principal: Zampiroli, Renan
• Data de Publicação: 2019
• Outros Autores: Alvarenga, Cleyton Batista de, Rinaldi, Paula Cristina Natalino, Carvalho, Vanessa Andaló Mendes de, Prado, Jair Rocha do, da Silva Neto, Ademar Tavares
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Revista de Ciências Agrárias (Belém. Online)
• Texto Completo: https://ajaes.ufra.edu.br/index.php/ajaes/article/view/3090
• topic: Adjuvant; Sprayer nozzles; Efficiency; Volume of spray mix; application technology; coffee cultivation; droplet size; volume of syrup; Adjuvante; Pontas de pulverização; Eficiência; Volume de calda; tecnologia de aplicação; cafeicultura; tamanho de gotas; volume de calda

Brazil is the largest producer and exporter of coffee in the world, and has been facing difficulties due to the cultivar’s susceptibility to the occurrence of insects. This study aimed to evaluate the application parameters using the hydro pneumatic sprayer with different volumes of spray mix and sprayer nozzles, in the presence and in the absence of agricultural adjuvants. The work was carried out in an experimental area in the city of Monte Carmelo / MG, with the evaluation of the hydro pneumatic application efficiency with different volumes of spray mix, 200 and 400 L ha-1, two empty cone sprayer nozzles (JA-01 and TVI -800075), presence / absence of agricultural adjuvant in the application spray mix, Cartape Hydrochloride 500 g i.a ha-1, Cartape Hydrochloride (500 g i.a ha-1) + orange oil at a dose of 75 mL 100 L-1 of syrup. The use of orange oil interfered in parameters of droplet size and relative amplitude. The use of coarse droplets is a viable alternative for the application efficiency in low air humidity times. The higher volume of spray mix resulted in an increase in percentage of coverage and size of droplets.