Herbicidal activity of kidney leaf mud plantain leaves extracts on the germination of four species

• Published in: Advances in Weed Science 2020, Vol.38
• Main Authors: T. Perboni, Laís, Agostinetto, Dirceu, Gazola, Juliano, Tessaro, Daniela, M. Teixeira, Marlon, Neutzling, Alessandro
• Format: Article
• Language: English
• Subjects: Acetic acid; Bioactive compounds; Biological activity; Cereal crops; Control methods; Cultivars; Ethyl acetate; Evaluation; Experiments; extracts; Fractionation; Germination; Glyphosate; Herbicides; Heteranthera limosa; Heteranthera reniformis; Kidneys; Leaves; Lettuce; Luminosity; Mud; Natural products; Plant extracts; PLANT SCIENCES; Rice; Sandy soils; Seeds; Soil classification; Solvents; suppression; Weed control; Weeds
• ISSN: 0100-8358; 1806-9681; 1806-9681; 2675-9462
• DOI: 10.1590/s0100-83582020380100061

Kidney leaf mud plantain proved to be promising for future studies that involve the fractionation of extracts and identification of compounds with biological activity. 1 Introduction Weed management through herbicide utilization - the main control method used in several cultures - requires the discovery of molecules with new action mechanisms to complement or even replace the molecules that no longer have control efficiency. The emergence of cultures resistant to glyphosate in 1995 (Roundup Ready®), there was a decrease in the number of companies involved in the research and discovery of new herbicidal molecules, which contributed to the absence of launch of new mechanisms of action in the last 25 years (Duke, 2012; Dayan, 2019). Among the species with potential in the production of bioactive compounds is Heteranthera reniformis, one of the main weeds of irrigated rice crop, which is characterized by presenting fast growth in environments containing water layer, high luminosity and temperature, and, consequently, it has potential for rapid occupation of space (Rolon et al., 2018). The objectives of this study were to evaluate (a) the effect of hexanic extracts, ethyl acetate and methanolic of H. reniformis leaves in the germination of crest seeds; and (b) evaluate different concentrations of the extract with great biological activity on the germination of lettuce, barnyard grass and giant arrowhead. 2 Material and Methods H. reniformis plants were multiplied in boxes of 25 L capacity containing soil classified as Planosol of sandy texture from rice crops, in order to collect plant material for the extraction.