INFLUENCE OF INDAZIFLAM AND GLYPHOSATE HERBICIDES ON THE INITIAL DEVELOPMENT OF SUGARCANE (Saccharum officinarum) IN THE PRESENCE OF MICROGEO® BIOFERTILIZER

• DOI: 10.22533/at.ed.973342312048

• Palavras-chave: glyphosate; indaziflam; soil microbiology; Sapphire EMBRAPA; root system

• Keywords: glyphosate; indaziflam; soil microbiology; Sapphire EMBRAPA; root system

• Abstract:

  Weeds cause damage to sugarcane, especially in the initial 90 days, so practices for their control and strengthening of the crop are crucial to ensure high productivity. In this context, the objective of this study was to evaluate the influence of the use of indaziflam and glyphosate herbicides on the initial development of the crop in the absence and presence of Microgeo® biofertilizer. The experiment was carried out in a greenhouse, consisting of 6 treatments, with 4 completely randomized repetitions, namely, indaziflam (0.15 mg.L-1 with Microgeo®); indaziflam (0.15 mg.L-¹ without Microgeo®); glyphosate (3 mg.L-¹ with Microgeo®); glyphosate (3 mg.L-¹ without Microgeo®); control 1 (no herbicide without Microgeo®); control 2 (without herbicide with Microgeo®). Visual assessments of phytotoxicity by the ALAM scale were performed on the crop at 07, 21, 35, 45 and 60 days after treatment (DAT), at 60 DAT the shoot and root biomass and development of the root system were evaluated by image processing by the SAFIRA software from EMBRAPA, the data analyzed by the AGROSTAT Software, submitted normality test, analysis of variance (ANOVA) and Tukey test (p <0.05). The results demonstrated thatthe herbicides indaziflam and glyphosate had a negative impact on sugarcane development, with a reduction in biomass accumulation and changes in root development parameters. In addition, the Microgeo biofertilizer^®was able to minimize the negative effects caused by herbicides when applied in the same period.