Caracterização da pulverização hidropneumática em cafeeiro conilon

• Autor(a) principal: Rodrigues, Joice Paraguassú
• Data de Publicação: 2017
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da Universidade Federal do Espírito Santo (riUfes)
• Texto Completo: http://repositorio.ufes.br/handle/10/8212
• topic: Tecnologia de aplicação; Pulverizador hidropneumático; Volume de aplicação; Pulverização eletrostática; Coffea canephora; Application technology; Hydropneumatic spray; Agronomia; 63

In Brazil coffee production is an important agricultural activity, with the state of Espírito Santo being the largest national producer of Café Conilon. One of the great challenges faced by coffee growers is the susceptibility of plants to various pests and diseases, which is why it presents several challenges for the technology of application of phytosanitary products. The objective of this work was to study the deposition of the conilon coffee, the endoderiva and the potential of drift provided by the spray with eight volumes of syrup (four volumes with electrostatic assistance and four volumes without electrostatic assistance) with hydropneumatic spray. The work was conducted in a private property in ES-Mountain, in the coffee field of Conilon, in September 2016. The experiment was installed in a randomized block design with eight treatments and four replications. Brilliant Blue tracer was added to the syringe at the dose of 2 g L-1. Leaves were collected from the upper and lower thirds of the plants, as well as petri dishes placed in the soil under the canopy of the same and contact paper labels located above the canopy, from which the tracer contained in the samples was removed by absorption spectrophotometry light. The four volumes of syrup used in the hydropneumatic sprayer without electrostatic spraying (498, 609, 700 and 782 L ha-1 ), when compared to the four volumes with electrostatic assistance (234, 255, 273 and 290 L ha-1 ) presented higher values In all parameters evaluated, according to Scott Knott's averages group. The average of the drift to the soil also of the applied volumes without electrostatic assistance was nine times greater when compared to the average of the others.