Abstract
Coffee has a significant economic, social, and cultural impact on Brazilian society, generating jobs for thousands of Brazilians. Good management practices such as weed control have direct and indirect benefits on coffee yield and quality. Currently, there is an increase in the infestation rate of Digitaria insularis in coffee plantations due to chemical resistance to glyphosate. In the literature, the study of the combination of glyphosate with different herbicides has been investigated, aiming at improving the efficiency of the control of Digitaria insularis. The objective of this work was to evaluate the efficiency of control of the Digitaria insularis in a coffee farm using a combination of glyphosate with clethodim and phenoxaprope-p-ethyl. Trials were conducted in a commercial coffee farm in southern Minas Gerais in a field with a two-year-old cultivar IAC Catuaí 144. The experiment was conducted under a completely randomized design with five treatments and four replications, totaling 20 experimental plots. Thirty and ninety days after application, the plant numbers were counted and the visual analysis with the use of drones and the digital camera. The results show that the use of glyphosate alone was not efficient in the power of Digitaria insularis. The results show that the herbicide mixtures were efficient in the control.
Highlights
The success of agri-business and coffee production is directly related to good management practices, rational use of natural, financial, technological resources with the aim of increasing yield and quality of production (Caixeta; Guimarães; Romaniello, 2008)
Based on the above literature review, the objective of this work is to evaluate if the mixture of glyphosate with phenoxaprope-p-ethyl and clethodim would improve the efficiency of control of D. insularis in a coffee field in Conceição da Aparecida, Minas Gerais, Brazil
The number of D. insularis plants counted 30 and 90 Days After the Application (DAA) of the herbicides are shown in Figure 2 and 3, respectively
Summary
The success of agri-business and coffee production is directly related to good management practices, rational use of natural, financial, technological resources with the aim of increasing yield and quality of production (Caixeta; Guimarães; Romaniello, 2008). As coffee is a perennial crop, the competition for limited resources such as light, water, and nutrients with weeds reduces yield and quality. Effective weed control is vital to guarantee a healthy crop (Ronchi; Silva, 2006). Weed can be controlled with three techniques: manually, with machines, or with chemical herbicides (Melloni et al, 2013). Due to the practicality and reduction of labor, chemical herbicides are one of the great technological advances of the 20th century in agriculture. The use of chemical herbicides allows weed control even during rainy periods where mechanical control is not efficient (Werlang; Silva; Ferreira, 2005)
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