Efeito alelopático de extrato aquoso de capim aruana sobre a germinação de azevém, trigo e aveia

Abstract

Some groups of plants are capable of plants are capable of producing secondary metabolites that have the potential to interfere with the development and growth of other plants present in the same environmet. The overseeding technique requires knowledge of the interaction between the perennial plants and the annual plants in order to forage production in adequate quality and quantity, thus the importance of a study covering this theme becomes evidente. This work aimed to evaluate the effect of different concentrations of aqueous extract of Panicum maximum cv aruana on the germination and growth of seedlings in winter crops, Triticum aestivum (wheat), Avena sativa L. (oats), Lolium multiflorum (ryegrass yearly). This work aimed to evaluate the percentage of germination, germination speed index (IVG), length and fresh mass of seedlings. The seeds of the cultures were exposed to concentrations of 0%, 1%, 3%, 5% and 10% of aqueous extract of Panicum maximum cv aruana, stored in BOD until germination stabilization and later evaluation of IVG, germination, normal seedlings and abnormal, length of aerial part and radicle, fresh mass of seedlings. With the study it can be seen that the aqueous extract of Panicum maximum cv aruana causes a negtive effect on the IVG, length of seedlings of wheat, oats, ryegrass, as well as fresh mass, thus observing a significant allelopathic effect.