1. Efficacy of new generation fungicides against French bean rust caused by Uromyces appendiculatus.
- Author
-
Devi, Banita, Gupta, S. K., Singh, Gurvinder, and Prasad, Pramod
- Subjects
- *
COMMON bean , *CORROSION & anti-corrosives , *FUNGICIDES , *BEANS , *AZOXYSTROBIN , *STEEL corrosion - Abstract
French bean rust incited by Uromyces appendiculatus is particularly prominent in pencil type beans in mid hills of Himachal Pradesh. Effect of different systemic, non-systemic and combi fungicides were studied for the management of bean rust. Under in vitro conditions azoxystrobin, difenoconazole + azoxystrobin, pyraclostrobin + metiram, kresoxim - methyl, fluopyram + tebuconazole, trifloxystrobin + tebuconazole, propiconazole + difenoconazole resulted in cent per cent inhibition of urediniospore germination at 200 ppm concentration. Difenoconazole + azoxystrobin provided up to 96 h post-infection activity while non-systemic fungicides i.e. mancozeb and chalorothalonil were found least effective with <24 h post -infection activity under glasshouse conditions. For the management under field conditions four foliar sprays of azoxystrobin (0.1%) at 10 days interval was found most effective in reducing bean rust severity to 3.81% and increased green pod yield by >100%. For effective management of this devastating disease activities of various fungicides (strobilurins and EBI's) having different modes of action can be utilized in formulating a spray schedule. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF