Abstract
ABSTRACT The population of the caterpillar Diatraea saccharalis (Lepidoptera: Crambidae) has increased in the crop of sugarcane in recent years. Although the control of this insect is traditionally carried out through biological control, the use of phytosanitary products has still been necessary. Therefore, the goal of this work was to evaluate the performance of different insecticides in sugarcane borer control, as well as the effect on productivity and total recoverable sugar (TRS). The experiment was conducted in a randomized experimental delineation of blocks, with six treatments and four blocks. Treatments consisted of five insecticides and one control group (without application of insecticide). For calculating the D. saccharalis infestation index, monthly samplings were performed every 30 days, for 12 months. After this period, the final D. saccharalis infestation index was evaluated and calculated for each treatment. In order to compare productivity among procedures, four central lines were collected from each plot. Thus, the samples were weighed for the productivity calculation (TCH) and sent to the laboratory for the total recoverable sugar (TRS) analysis. The chloranthraniliprole (350) insecticide provided a lower index of sugarcane borer infestation, in addition to greater productivity when compared to the other insecticides. There was no significant difference in the parameter of total recoverable sugar (TRS) among treatments.
Highlights
Sugarcane (Saccharum officinarum L.) is a monocot, typical of tropical and subtropical climates, originally from Southeast Asia (JAMES, 2004)
The goal of this work was to evaluate the performance of different insecticides in sugarcane borer control, as well as the effect on productivity and total recoverable sugar (TRS)
There was no significant difference in the parameter of total recoverable sugar (TRS) among treatments
Summary
Sugarcane (Saccharum officinarum L.) is a monocot, typical of tropical and subtropical climates, originally from Southeast Asia (JAMES, 2004). It has historical importance in Brazil’s formation, since it was the first botanical species of economic expression introduced and cultivated on the northeast coast. Due to the production of ethyl alcohol and sugar, this grass was disseminated in almost all Brazilian states, establishing itself in the most diverse edaphoclimatic conditions (MARIN; NASSIF, 2013; UNICA, 2017). Global demand for biofuels has stimulated national ethanol production; the sugar and alcohol sector in Brazil has increased sugarcane production (BARBOSA; GATTI JÚNIOR, 2012). The crop suffers from agents that can reduce the plantation productivity over the cycle, including the caterpillar Diatraea saccharalis F. (Lepidoptera: Crambidae), sugarcane borer, that is considered a pest insect of great importance in the crop due to the damage it can cause
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