Qualidade de pulverização pneumática de defensivos agrícolas em cafeeiro conilon
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Data
2016-07-29
Autores
Oliveira, Pablo Souto
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Universidade Federal do Espírito Santo
Resumo
The occurrence of pests, diseases and weeds in agro-ecosystem in important crops
(soybeans, corn, wheat, rice, cotton, coffee) are causing major productivity losses of
30% of the productive potential in the world average, even with control practices. A
major factor affecting the coffee productivity is the presence of pests and diseases.
With the expansion of coffee plantations and adopting the high density planting system
is established environmental conditions favorable to the development of pests and diseases of major economic importance, foremost among them, the borer-coffee
(Hypothenemus hampei F.) and the rust of coffee (Hemileia vastatrix Berk & Br.). In
infestations of culture by these agents, the use of control measures necessary to prevent economic damage occurs mainly by the use of plant protection products, applied
mostly via spraying. The effectiveness of the phytosanitary control, spraying is subject
not only to the use of proven action products, but also the right time of your application
using the appropriate equipment, ensuring high application efficiency, reducing losses
and environmental contamination. There is a growing use of tractor-implement pneumatic sprays the coffee plantations of Espirito Santo north due to densification of the
plantations, the fall of orthotropic branches by weight of fruit production and the need
for emergency interventions. There are some questions about the gun type spray application efficiency in coffee plantations, many without any scientific basis. The aim of
this study was to evaluate the spray deposition in Conilon coffee applied by pneumatic
spraying. The experiment was installed in a property in the city of Nova Venécia-ES
were demarcated plants aligned to the direction of the spray jet, perpendicular to the
crop rows. The crop has spacing of 3.60 m between rows and 1.00 m between plants,
which presented the application of the occasion, The experimental area consisted of
16 consecutive plants selected by line of coffee, and the 4 business, centers, 8 lines
consecutive coffee and parallel to the traversal of the tractor-sprayer set data were
collected December 15, 2015. The experimental plot consisted of a plant. a completely
randomized experimental design was used with four replications in a plot scheme split
8 x 2 x 3, combining the eight rows of coffee plants, the two sides of the coffee from
the line and the two-thirds of the plant (lower, secondary and higher). The leaf area
was obtained by means of a leaf area meter mark LI-COR Model LI-3100C for individual reading. In conclusion, there was greater deposition to a distance of 10.80 meters
and the front side of the spray was higher deposition in the middle and upper third and
the back side deposition was similar in the three thirds.
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Palavras-chave
Coffea canéfora , Café conilon , Application technology , Tecnologia de aplicação , Canhão pneumático , Pneumatic cannon , Coffea canephora
Citação
OLIVEIRA, Pablo Souto. Qualidade de pulverização pneumática de defensivos agrícolas em cafeeiro conilon. 2016. 61 f. Dissertação (Mestrado em Agricultura Tropical) - Programa de Pós-Graduação em Agricultura Tropical, Universidade Federal do Espírito Santo, São Mateus, 2016.