EFICIÊNCIA DE “MATRIZ D” E NOVAS VERSÕES + GLIFOSATO NO CONTROLE DE TRAPOERABA (Commelina benghalensis)

Abstract

Trapoeraba (Commelina benghalensis) is a weed with a highly competitive capacity for natural resources. This plant makes the use of mechanized harvesting difficult as it is a host and spreader of pests and diseases. The resistance of trapoeraba to the herbicide glyphosate has been analyzed year after year, which is the main herbicide used in weed management. For the purpose of trying to control this plant, glyphosate is commonly used with the addition of an adjuvant in the syrup to enhance its effect. This work was developed with the objective of evaluating the efficiency of new versions of Matriz D in the management of trapoeraba, using as evaluation parameters the inhibition of the enzyme 5-enolpyruvoylshikimate-3-phosphate synthase (EPSP's), chlorophyll index, visual analysis and dry matter content. The experiment was carried out in a greenhouse at the Instituto Federal Goiano – Morrinhos campus, and consisted of 7 treatments and 4 replications in each treatment, with 3 pots per repetition: treatment 1 - control (Matrix D), treatment 2 - control (glyphosate) , treatment 3 (Matrix D+ glyphosate), treatment 4 (SC 21/54 - 008+ glyphosate), treatment 5 (SC 21/54 – 009+ glyphosate), treatment 6 (SC 21/54-010+ glyphosate) and treatment 7 (SC 21/54-011+ glyphosate), following a randomized block design. The visual analysis showed uniformity in phytotoxicity between treatments, differing only from treatment 1. When changing the Shiquimic Acid route, treatment 3 was more efficient, with greater accumulation of acid in its route. As for dry mass and chlorophyll analysis, there was no differentiation between treatments. Therefore, observing the effects on the Shiquimic Acid route, treatment 3 (Matrix D+glyphosate) proved to be the most efficient among the other treatments, aiming to control trapoeraba.