Viabilidade do uso de um biorregulador de crescimento em Cynodon spp. (tifton-85) para a produção de feno

Abstract

The production of perennial plants for the production of pasture and hay for animal feed is fundamental since they provide good production and quality dry matter. Therefore, promoting an increase in forage production is a way to raise productivity in the same area space. The use of bioregulators aims to increase or improve plant productivity. The objective of the research was to evaluate the production and tiller emission of tifton-85 in two cuts when using varied doses of a bioregulator. It also aimed to evaluate the effects on the leaf-stem relationship. The work was conducted in the city of Santo Cristo - RS with a randomized block design, with 4 blocks and 5 different application doses of the bioregulator. The results indicate that the use of the product resulted in an increase in the number of tillers per m², with the maximum number of tillers per m² in the first cut at a dose of 553 ml/ha, and in the second cut at a dose of 463 ml/ha. For the production of DM per ha there was also an increase in both cuts, being in the first cut the maximum production of DM/ha in the dose of 521.7 ml/ha, and in the second cut in the dose of 463.22 ml/ha. Considering the production of tillers and DM/ha, the applications should start from 400 ml/ha to 600 ml/ha, but taking into account the costs and profit to the producer, apply 300 ml/ha. For the leafstem relationship, in both cuts there were no significant results.