Adjuvants and herbicides and the infectivity of Fusarium graminearum, a potential biocontrol agent of Egeria densa and Egeria najas

Planta Daninha

Borges Neto, C.R.¹  Universidade Estadual Paulista¹  Universidade Estadual Paulista, Jaboticabal¹  Pitelli, R.A.¹ 

关键词: bioherbicide;    Elodea;    submerged aquatic macrophytes;    biological control.;   

DOI  :  10.1590/S0100-83582004000100010

学科分类：农业科学（综合）

来源: Sociedade Brasileira da Ciencia das Plantas Daninhas (S B C P D) / Brazilian Society of Herb Science

【 摘 要 】

The effects of adding adjuvants and their association with herbicides on fungus infectivity were studied in the Fusarium graminearum x Egeria spp. pathosystem. Healthy Egeria densa and E. naja plants were inoculated with suspension of ground rice with F. graminearum, at a concentration of 0.7 g L-1. The assay tubes with the plants immersed in the suspension were kept in the incubator at the temperature of 25 oC and photoperiod of 12 hours daily, with plant symptoms being evaluated every two hours and plant growth monitored based on fresh matter increase at the end of the experiment. The effect of 14 adjuvants and 6 herbicides added to the inoculum on the action of F. graminearum against E. densa and E. najas was evaluated. In general, the adjuvants improved bioherbicide efficiency and the herbicide + fungus association increased disease severity and plant growth control.

【 授权许可】

Unknown