Thiamethoxam no controle de Mahanarva fimbriolata , na produtividade e na qualidade tecnológica da cana-de- açúcar
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Data
2010-12
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Resumo
The objective of the present study was to evaluate the effect of thiamethoxam in the control of roots spittlebug,
Mahanarva fimbriolata, in technological quality and productivity in the sugarcane crop. The research was
carried out in the experimental areas of «Usina Jalles Machado S/A», Goianésia City, Goiás State, Brazil. Three
experiments were installed in areas with mechanized harvest without previous burning: two with presence and
one without the presence of roots spittlebug. The experimental design was randomized blocks, with four
repetitions, being each parcel consisting of nine lines of ten meters. The evaluated treatments were: thiamethoxam in dose of 0, 100, 150 and 200 g of active ingredient per hectare. A costal spray of constant pressure
(CO 2 ) was used for the application. The evaluations of the population of spittlebug were made to the 13, 31, 43,
59, 77, 94 and 127 days after application, by counting the number of nymphs present in a line of the parcel. The
productivity and the technological characteristics also was determined. Thiamethoxam reduced the popula-
tion of spittlebug in all the doses, presenting not statistical differences among them. The physiological effect of
thiamethoxam was observed in the significant increment of the farming production of up to 7.98 tons per
hectare, consequently the increase in the industrial performance of sugar. The evaluated technological cha-
racteristics were not influenced by the application of thiamethoxam.
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Thiamethoxam, Cigarrinha-das-raízes, Bioativador, Saccharum sp., Thiamethoxam, Roots spittlebug, Bioactivador, Saccharum spp.
Citação
PEREIRA, Jaqueline Magalhães; FERNANDES, Paulo Marçal; VELOSO, Valquíria da Rocha Santos; SILVA, Edgar Alves da. Thiamethoxam no controle de Mahanarva fimbriolata, na produtividade e na qualidade tecnológica da cana-de-açúcar. Agrociencia Uruguay, Montevideo, v. 14, n. 2, p. 26-32, jul./dez. 2010.