Management of Soil Mulch in Weed Suppression and Sugarcane Productivity

Abstract

The soil mulch is an agricultural practice that can benefit soil fertility and can be effective in suppressing weeds. The objective this research was to evaluate the mulching from legumes in weed control and sugarcane (first harvest/cut) productivity, comparing the results with the conventional application of herbicides. This research was carried out under field conditions. Five legumes were managed in two ways to form the soil cover: (1) mechanical topple, and (2) chemically desiccated. To compare the results, used treatments with herbicides applied in pre and pre + post emergence. The soil mulch from mechanical topple of Crotalaria spectabilis, C. juncea, C. ochroleuca, C. breviflora and Cajanus cajan presented lower efficiency in suppressing weeds than the treatment with herbicides applied in pre + post-emergence, however, were more efficient in controlling weeds in relation to the use of herbicides in pre-emergence, a fact observed at 60 days of sugarcane cultivation.

Seletividade De Herbicidas Residuais Usados Em Cana-De-Açúcar Para Espécies De Crotalária

“…Although Crotalaria species are efficient for weed management in sugarcane crops, the application of herbicides in desiccation is necessary to provide a better establishment of the species. It is important, thus, to evaluate the tolerance of these species to herbicides in order to establish the safest doses to be used (14) . Given the above, the objective of this study was to determine the tolerance of Crotalaria species to pre-emergence herbicides used in sugarcane crops through dose-response curves.…”

Straw interference in the emergence of talquezal seeds from different origins

“…Soil cover using straw is an agricultural practice that, among numerous benefits, can be effective in suppressing weeds (Cerqueira et al, 2018). This practice interferes with the infestation and establishment of weeds by physical, chemical, and biological means (Teixeira et al, 2014).…”