@article { author = {Montazeri, M. and Hamdollah-Zadeh, H.}, title = {The Effect of Trifluralin on Rhizoctonia solani (isolate AG4), Causal Agent of Soybean Damping off}, journal = {Caspian Journal of Environmental Sciences}, volume = {3}, number = {2}, pages = {169-172}, year = {2005}, publisher = {University of Guilan}, issn = {1735-3033}, eissn = {1735-3866}, doi = {}, abstract = {Damping off caused by Rhizoctonia solani (isolate AG4) constrains growing soybean in the north Iranian province of Golestan. The pathogen was grown on malt agar containing 0, 50, 100 or 200 ppm trifluralin then its vegetative growth and virulence were evaluated. The response of soybean cv. Williams seedlings grown in soil containing 0, 0.5, 1 and 2 ?g ai g-1 trifluralin was investigated. On malt agar containing trifluralin, the radial growth of the fungal colonies was slower than that on untreated medium. There was no significant difference between these two types of colony in their abaility to cause disease symptoms on soybean seedlings. The incidence of soybean damping off in autoclaved soil treated with trifluralin was significantly higher than that in untreated soil. The results indicate that trifluralin enhanced the susceptibility of soybean radicles to the pathogen.   REFERENCES  Altman, J. and Rovira, A. D. (1989) Herbicide-pathogen interactions in soilborne root disease. Cand. J. Botani, 66, 1547-1555. Bauske, E. M and Kirby, H. W. (1992) Effects of dinitroanaline herbicides, carboxinpentachloronitrobenzene seed treatment, and Rhizoctonia disease on soybean. Plant Disease, 76, 236-239.  Chandler, J. and Santelman, P. W. (1967) Interaction of four herbicides with Rhizoctonia solani in seedling cotton. Weed Sci., 16, 453.  Doupnik, B. Jr. (1993) Soybean production and disease loss estimates for the north central United State from 1989-1991. Plant Disease, 77, 1170- 1171. Hamdollah-zadeh, A. and Rahimian, H. (1989) Anastomosis group 4 is the major cause of Rhizoctonia solani of cotton and soybean in Gorgan. In Proceeding of the 9th Plant Protection Congress of Iran, 9-14 Sept. 1989, Ferdowsi University, Mashhad, Iran, p. 110. Harikrishman, R. and Yang, X. B. (2002) Effects of herbicides on root rot and damping- off caused by Rhizoctonia solani in Glyphosate- tolerant soybean. Plant Disease, 86, 1369- 1373. Levesque, C. A., Rahe, J. E. and Eaves, D. M. (1987) Effect of glyphosate on Fusarium spp.: its influence on root rot colonization of weeds, propagule density in the soil, and crop emergence. Cand. J. Mic., 33, 354- 360. Morejohn, L. C., Bureau, T. E., Mole- Bajer, J., Bajer, A. S. and Fosker, D. E. (1987) Oryzalin, a dinitroanaline herbicides bins to plant tubulin and inhibits microtubule polymerization in vitro. Planta, 172, 252- 264.  Ross, M. A. and Lembi, C. A. (1999) Applied Weed Science, 2nd Edition. Prentice Hall Inc., New Jersey. 452 p. Sanogo, S., Yang, X. B. and Scherm, H. (2000) Effects of herbicides on Fusarium solani f. sp. glycines and development of sudden death syndrome in glyphosate tolerant soybean. Phytopathology, 90, 57- 66.  Sharon, A., Amsellem, Z. and Gressel, J. (1992) Glyphosate suppression of induced defense responses: increase susceptibility of Cassia obtusifolia to a mycoherbicide. Plant Physiol., 98, 654- 659. Sinclair, J. B. Backman, P. A. (1989) Compendium of Soybean Diseases, 3rd ed. American Phytopathological Society Press,  St. Paul, MN. Vencil, W. K. (2002) Herbicide Handbook, 8th Edition. Weed Science Society of America, USA. 493 p. Wiley, G. L. and Ross, M. A. (1974) Effect of herbicides on Rhizoctonia root rot of soybean. In the Proceedings of North Central Weed Control Conference, 29, 33-34}, keywords = {Damping off,Rhizoctonia solani,Soybean,Trifluralin}, url = {https://cjes.guilan.ac.ir/article_953.html}, eprint = {https://cjes.guilan.ac.ir/article_953_e170fded2cfa04ee308b8b779bc002f6.pdf} }