Effect of Pallas herbicide residue on stimulating the pathogenicity of Alternaria alternata in causing leaf spot in cowpea plant
DOI:
https://doi.org/10.54174/2ps6cf59Keywords:
Alternaria alternate, cowpea, Pallas, herbicideAbstract
Summary:
This study was carried out to spotlight on the effect of Pallas herbicide residues of isolates of Alternaria alternata in increasing their pathogenicity and stimulating them to cause symptoms of cowpea leaf spot in deferent region of Babylon Governorate, Iraq.
The results of pathogenicity test using radish seeds revealed the ability of three isolates of Alternaria alternata to reduce the percentage of radish seeds germination significantly compared with control treatment.
The results showed that the development of the inoculum for the tested isolates on a nutrient medium that was previously prepared with 5 ppm of the herbicide Pallas has contributed to increasing the pathogenicity of these isolates by significantly reducing the percentage of cowpea seeds by following the blotting paper folds technique, Similar results were obtained after supplementation the liquid medium of fungal isolates with 5 ppm of the herbicide Pallas in studying liquid fungal infiltrates in cowpea seedlings infection.
The results of the greenhouse were confirmed with laboratory experiments results, The concentration of 5 ppm of the herbicide Pallas had a significant effect on increasing the pathogenicity of isolates of the fungus Alternaria alternata. These pathogens significantly reduced the percentage of germination of cowpea seeds in the potting soil, and reduced the heights of infected plants and significantly reduced dry weight compared to the control treatment. Increasing the appearance of leaf spot symptoms on true leaves of cowpea plants treated with sporophyte suspension prepared with 5 ppm of Pallas herbicide.
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References
Abboud M. Al-Tafili and P.D. Nisreen Al-Jassani. 2021. The henomenon of desertification and its effects on reducing agricultural areas in Babylon Governorate. IOP Conf. Ser.: Earth Environ. Sci. 735 012063.
AL-hailly,T.A. Khattab and Saleh, S. Abudulkader. 2014. Effect of some herbicides on controlling associated weeds with wheat growing in the semi-arid zone. Mesopotamia J. of Agric. Vol. (22) No. (1). pP:146- 153
Berig, N. V.; Aveling, T. A. S. and Merwe,C. F. V.2013. Conidial morphology and development of Alternaria alternate from cowpea. African plant protection .Vol. 8. pP: 69 – 76
Bolken ,H.A., E.E. Butler,1974.stuies on hetrokaryosis and virulence of Rhizoctonia solani.phyto pathology.64:513-522.
Devi, K.N., Singh M.S., Singh, N.G. and Athokpam, H.S.2011.Effect of integrated nutrient management on growth and yield of wheat (Triticum aestivum L.). J. Crop weed 7:23-27.
Domsch K. H., W. Gams and Anderson, T. H. Compendium of Soil Fungi. Vol. 1, Academic Press, London. 1981.
Duke, S.O.; Wedge, D.E.; Cerdeira, A.L. & Matallo, M.B. (2007). Herbicide effects on plant disease. Outlooks on Pest Management, 18, 36-40, ISSN 1743-1026.
Ellis M. B. More Dematiaceous Hyphomycetes. Kew, Surrey. 1976
ISTA. 1999. International rules for seed testing .Seed Sci.and Technology.27:supplement.
Khatam, A., W. Ahmad and M.Z. Khan. 2012. Perception of farmers regarding effect of various weed management practices in onion crop. Pak. J. Weed Sci. Res. 18 (4): 553- 559.
Lancaster, S.H., Hollister, E.B., Senseman, S.A. & Gentry, T.J. (2010). Effects of repeated glyphosate applications on soil microbial community composition and the mineralization of glyphosate. Pest Management Science, 66, 59-64, ISSN 1526-498X.
Leo, M. and L. Nollet. 2004. Herbicide Residue, Handbook of food analysis 2nd Ed, Madrid, Spain. 1269
Pitt, J. I. and Hocking, A. D. Fungi and Food Spoilage. Academic Press, Sydney. 1985.
Sanyal, D. & Shrestha, A. (2008). Direct effect of herbicides on plant pathogens and disease development in various cropping systems. Weed Science, 56, 155-160, ISSN 00431745.
Smith, D.A. & Hallett, S.G. (2006). Interactions between chemical herbicides and the candidate bioherbicides Microsphaeropsis amaranthi. Weed Science, 54, 197-201, ISSN 0043-1745.
Smith, N.R.; Dawson, V.T. & Wenzel, M.E. (1946). The effect of certain herbicides on soil microorganisms. Proceedings – Soil Science Society of America, 10, 197-201, ISSN 00380776
Trebst, A. (2008). The mode of action of atriazine herbicides, In: The triazine herbicides: 50 years revolutionizing agriculture, LeBaron, H.M., McFarland, J.E. & Burnside, O. (Eds.), 101-110, Elsevier, ISBN 978-0-444-51167-6, Oxford (UK).
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