Effects of Two Systemic Insecticides on Damping-off Pathogens of Cotton | ||
| Journal of Agricultural Science and Technology | ||
| Article 3, Volume 13, Issue 1, 2011, Pages 27-33 PDF (575.3 K) | ||
| Authors | ||
| M. Hoshyar Fard* 1; T. Darvish Mojeni2 | ||
| 1Agricultural and Natural Resources Research Center of Guilan, Rasht, P.O Box: 41635-3394, Islamic Republic of Iran. | ||
| 2Cotton Research Institute of Iran, Gorgan, Islamic Republic of Iran. | ||
| Abstract | ||
| In vitro and greenhouse studies were conducted to investigate the possibility of an interaction between two systemic insecticides of: Thiodicarb (Larvin DF 80) and Imidacloprid (Guacho SW 70), and seedling disease organisms of: Rhizoctonia solani, Fusarium moniliforme and Pythium ultimum. When in vitro concentrations of Imidacloprid and Thiodicarb were applied, a fungistatic activity occurred. These insecticides inhibited mycelial growth of R. solani and F. moniliforme by 6.6-14.1 % and 15.2-70.8 %, respectively. F. moniliforme was more seriously affected by the insecticides while no significant effect was observed on P. ultimum. The pot experiments confirmed in vitro results so that, Thiodicarb provided excellent protection against pre- and post-emergence damping-off of the plant by 54.2% and 90.6 %, respectively. | ||
| Keywords | ||
| Antifungal activity; Fusarium moniliforme; Imidacloprid; Pythium ultimum; Rhizoctonia solani; Thiodicarb | ||
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