Desbaste químico na rebrota da bananeira prata-anã: um estudo com o clone gorutuba

Abstract

Banana (Musa sp.) is a prominent crop in Brazil, which is the fourth largest producer of the fruit in the world. In the country, it plays a significant role in the agricultural scenario and has great socioeconomic relevance. Due to its high nutritional value and affordable cost, it stands out as one of the main fruits consumed in the country, especially by the low-income population. However, one challenge observed is the regrowth of banana ratoons, which can make management difficult. An alternative would be the use of herbicides to eliminate clumps, which is an area of research little explored. Controlling banana regrowth, in addition to promoting the phytosanitary conditions of the plantation, is essential to avoid competition between plants and ensure adequate production of bunches, as well as promoting greater uniformity of the banana plantation, in addition to facilitating the change of crop in the same cultivation area. Therefore, this research aims to evaluate the effectiveness and number of applications of different herbicides in controlling regrowth in banana trees of the Prata-Danã variety, Gorutuba clone. The experiment was conducted at the Fruit Production Sector of the Department of Agriculture of the Federal University of Lavras (UFLA) between 2023 and 2024. The design used was randomized blocks (DBC), with four treatments, four replications (blocks) and eight plants per plot. The plots were composed of five-year-old banana clumps of the Prata Anã variety (Gorutuba clone). Three applications of herbicides (2,4-D, glufosinate ammonium and glyphosate) were carried out with an interval of 60 days between applications. Phytotoxicity assessments were carried out according to the EWRC (1964) visual scale, with scores ranging from 1 (absence of symptoms) to 9 (plant death) at 7, 14, 21 and 28 days after application of