Control preemergente de arvenses con sustancias alternativas a los herbicidas de síntesis

Abstract

ABSTRACT

Synthetic herbicides are very effective in controlling weeds under various conditions. However, indiscriminate applications increase environmental contamination, making it necessary to look for more environmentally friendly alternatives. This research aimed to evaluate the effectiveness of aqueous plant extracts in the pre-emergent control of weeds in sugarcane. At the Sugarcane Research Institute of Villa Clara, a semi-controlled experiment was carried out with a cutting of one bud of the cultivar C86-12 per pot and another in field plots, with cuttings of three buds of the cultivars CP52-43 and C86-12. In both experiments, Merlin Total CS 60 was sprayed at 0.25 L ha-1 in a broth of 200 L ha-1, as well as aqueous extracts of green leaves of Pinus sp, Eucalyptus sp. and whole plants of Cyperus rotundus L., applied at 800 L ha-1, 200 and 400 L ha-1 of broth, respectively. The annual species control of the extracts was between 62-72% and 49-55%. Total merlin was 100 and 88% in both experiments. The agricultural yield in the second experiment only had a significant difference in the management of weeds, where the treatments outperformed the control.

Keywords: Bioherbicides, Sugarcane, Aqueous Extracts, Pre-Emergence, Agricultural Yield.