Selection of vegetable indicators of indaziflam residues in soil

Abstract

Studies on the behavior of herbicides in the soil (sorption, leaching and persistence) can be conducted by using biological and chemical methods. To use the biological method it is necessary to select species that present, in low concentrations of the herbicide, an easily quantified response in a short period of time. In this research the response of nine vegetable species was quantified in an inert substrate with different concentrations of indaziflam. The response of these species to indaziflam was quantified at 21 days after sowing by means of visual evaluation of the poisoning symptom and the accumulation of dry weight of the plants. All evaluated species were sensitive to indaziflam. The most sensitive species was maize, while sorghum, wheat and oat were the most sensitive species. However, the ease of cultivation of sorghum and its rapid growth, coupled with high sensitivity to indaziflam, make this species more suitable as a test plant for this herbicide. It is concluded that sorghum, wheat and oat can be used to detect indaziflam residues in soils.