Efeito do fungicida Indaziflam na germinação de sementes de espécies florestais nativas

Abstract

The ecological restoration process uses techniques such as the application of herbicides to reduce weed competition with forest species in the areas of interest. Thus, the objective of this work was to evaluate the germinative responses of seven native forest species Mutambo (Guazuma ulmifolia Lam.), Maricá (Mimosa bimucronata (DC.) Kuntze, Ipê-roxo (Handroanthus heptaphyllus (Vell.) Mattos, Escova de Macaco ( Apeiba tibourbou Aubl.), Mastic pepper tree (Schinus terebinthifolia Raddi), Wild peanut (Pterogyne nitens Tul.,), Taiúva (Maclura tinctoria (L.) D.Don ex Steud.) and Canafístula (Peltophorum dubium (Spreng.) Taub. to the pre-emergent herbicide indaziflam. The number of seeds germinated in 4 herbicide concentrations (T1=187.5 ml.ha-1; T2=150 ml.ha-1; T3=112 ml.ha-1) was analyzed ; T4=75 ml.ha-1; T5= distilled water - control) The species S. terebinthifolia (>30%) and H. impetiginosus (>40%) showed sensitivity to the herbicide, with reduced germination compared to the control. However, for P. nitens, regardless of the concentrations of the herbicide, they showed germination greater than 70%, for the species P. dubium, M. bimucronata, G. ulmifolia and A. tibourbou, they also did not show sensitivity to indaziflam. It is suggested that further studies be carried out with more species to better understand the action of the herbicide indaziflam and its effect on the germination of native forest species used in restoration.