A planta vizinha modifica o perfilhamento do capim-marandu

Abstract

he experiment was carried out to evaluate the tiller dynamics of Brachiaria brizantha syn. Urochloa brizantha cv. Marandu (marandu palisade grass) under three conditions: no neighboring plant on one side; with neighboring plants with the same height (30 cm) on both sides; and with higher neighboring plant (60 cm) on one side. The experimental design was completely randomized with five repetitions (plots of 9 m2). The tiller dynamics was evaluated in early November 2019 to March 2020. Of the six variables analyzed in this study, three were influenced by the absence or presence of neighboring plants: tiller appearance rate (TAp), BAL (balance between appearance and mortality of tiller) and NT (number of tiller). The TAp was higher in the site without neighboring plant, compared to the site with the highest plant. BAL and NT were lower when there was a higher neighboring plant, in relation to the other conditions, but these characteristics did not vary between the sites without neighboring plants and with neighboring plant of the same height. The presence of a taller neighboring plant on one side decreases the tillering of marandu palisade grass.