Caracterização da pulverização hidropneumática em cafeeiro conilon
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Data
2017-02-22
Autores
Rodrigues, Joice Paraguassú
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Editor
Universidade Federal do Espírito Santo
Resumo
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.
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Palavras-chave
Tecnologia de aplicação , Coffea canephora , Pulverizador hidropneumático , Application technology , Volume de aplicação , Hydropneumatic spray , Pulverização eletrostática