Efeito de extratos de tremoço azul (Lupinus angustifolius) no desenvolvimento de plântulas de trigo (Triticum aestivum)

Abstract

Controlling spontaneous plants is very important for all agricultural crops, as they interfere with crops and can reduce productivity. The increase in demand for organic products has required alternatives for managing spontaneous plants without the use of synthetic pesticides. The objective of this work was to evaluate the influence of different extracts from the aerial part of Lupinus angustifolius on seedlings of wheat cv. IPR Catuara. The treatments used were control with distilled water, hexane, ethanolic and aqueous extracts, with a concentration of 1%. The seeds were pre-germinated in BOD for 72 hours, then the treatments were applied to the seedlings and after 96 hours the evaluation was carried out. The most significant result was observed with hexane extract, that reduced the growth of the shoot and wheat radicle by 77.3 and 73.3% respectively, compared to control. It is therefore concluded that the L. angustifolius extract has a phytotoxic effect on wheat and that further studies can evaluate its influence on other plants and in less controlled environments.