Aplicação foliar e tratamento de sementes com bioativador à base de Ascophyllum nodosum em feijoeiro

Abstract

The Common bean holds great importance in the agricultural and food scenario of Brazilians. New technologies to increase productivity levels and maximize plant development, such as the use of bioactivators, are justified. Thus, the objective was to evaluate the emergence of plants and biomass of common bean cultivar IAC Imperador, as a function of seed treatment and foliar application of a bioactivator based on Ascophyllum nodosum. The research was conducted under greenhouse conditions at the Federal University of Uberlândia (UFU), Umuarama Campus, block 4N, Uberlândia, MG. The experimental design used was randomized complete blocks (RCB), composed of 8 treatments (control; seed treatment with bioactivator; foliar bioactivator at V3; seed treatment and foliar bioactivator at V3; foliar bioactivator at R6; seed treatment and foliar bioactivator at R6; foliar bioactivator at V3 and R6; seed treatment and foliar bioactivator at V3 and R6), with four replications. The experimental unit consisted of plastic containers with a capacity of 25 dm-3, filled with 80% of the volume with soil, sown with the cultivar IAC Imperador, of carioca grain type. Seedling emergence, aboveground biomass, and root biomass of common bean seedlings were evaluated. The use of a bioactivator in seed treatment does not influence seedling emergence of common bean "IAC Imperador". Similarly, the use of a bioactivator in seed treatment and/or foliar application (stages V3 and/or R6) does not influence the production of aboveground biomass and root biomass of common bean "IAC Imperador".