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Alternaria radicina Causing Leaf Spot Disease of Date Palm (Phoenix dactylifera L.) in Wasit (Middle of Iraq) and Its Susceptibility to Bioassay Test of Two Fungicides

Mohammed W. Khudhair, Ruaa A. Jabbar, Naeem S. Dheyab, Bassim S. Hamad, Hadi M. Aboud, Hiatham S. Khalaf, Nadia J. Mohammed

Abstract


Three Alternaria radicina (Meier) Neerg isolates (A1, A2, and A3) were isolated and firstly recorded in date palm, Phoenix dactylifera L. leaves in Wasit province (middle of Iraq) and identified as the causative pathogen of black spot disease. Two fungicides (Bavistin and Tachigazole) were used in vitro to measure their ability to control this pathogen. Study results revealed that both chemical fungicides expressed high level of inhibition in fungal radial growth especially at a concentration of 100 ppm and the lowest growth was at the concentration 5 ppm among all three isolates in both two fungicides. Bavistin revealed higher inhibition rate than Tachigazole with lowest LC50 (12.21) at the isolate A3. Tachigazole treatment showed high level of variation at all concentrations.

Keywords


Fungicides; Alternaria radicina; Date Palm; black spot

References


Abbott, W. 1925. A method of computing the effectiveness of an insecticide. J. Econ. Entomol. 18: 265-7.

Ahmed, A. N. 2011. First record Of alternaria radicina meier, drechsler and eddy as a causal agent of the leaf black spot disease on date palm in basrah city and its biological control. Basrah Journal of Agriculture Science. 24: 47-64.

Al-Taae, H. and A. Al_Taae. 2010. Study on Verticillium Wilt of Olive and Its Control. Egypt. Acad. J. biolog. Sci. 1: 41-5.

Alwan, S. L. 2011. Evaluating the resistance of the two fungi Fusarium oxysporum f. and Rhizoctonia solani. Kufa Journal for Agricultural Science. 1: 47-55.

Coles, R. and T. Wicks. 2003. The incidence of Alternaria radicina on carrot seeds, seedlings and roots in South Australia. Australasian Plant Pathology. 32: 99-104.

Erskine, W., A. T. Moustafa, A. E. Osman, Z. Lashine, A. Nejatian, T. Badawi and S. M. Ragy. Date palm in the GCC countries of the Arabian Peninsula. Proceedings of the Proc. Regional Workshop on Date Palm Development in the Arabian Peninsula, Abu Dhabi, UAE, 2004.

Farrar, J. J., B. M. Pryor and R. M. Davis. 2004. Alternaria diseases of carrot. Plant Disease. 88: 776-84.

Islam, S., M. Rahman, M. Hasan, M. Ashadusjaman and M. Khatun. 2007. Efficacy of fungicidal seed treatment in controlling alternaria spp. in radish seed. Int. J. Sustain. Crop Prod. 2: 46-50.

Kumar, M., V. Bhadauria, K. Singh, C. Singh and A. K. Yadav. 2013. Evaluation of Fungicide Efficacy for the Management of Alternaria Leaf Spot Disease on Chilli. Plant Pathology Journal. 12

Neergaard, P. 1945. Danish species of Alternaria and Stemphylium. Danish species of Alternaria and Stemphylium.

Rai, V. R. and T. Mamatha. 2005 Seedling diseases of some important forest tree species and their management. Proceedings of the Diseases and Insects in Forest Nurseries. Proceedings of the 5th Meeting of IUFRO Working Party. 6-8 pp.

Schmitz, H. 1930. Poisoned Food Technique. In. Industry of Engineering Chemical. London, USA. 333-361.

Scott, D. and H. Wenham. 1973. Occurrence of two seed-borne pathogens, Alternaria radicina and Alternaria dauci, on imported carrot seed in New Zealand. New Zealand Journal of Agricultural Research. 16: 247-50.

Scott, J. B. and S. Chakraborty. 2010. Genotypic diversity in Fusarium pseudograminearum populations in Australian wheat fields. Plant Pathology. 59: 338-47.

Soteros, I. 1979. Pathogenicity and control of Alternaria radicina and A. dauci in carrots. New Zealand Journal of Agricultural Research. 22: 191-6.

Survilienė, E. and E. Dambrauskienė. 2006. Effect of different active ingredients of fungicides on Alternaria spp. growth in vitro.

Tahvonen, R. 1978. Seed-borne fungi on parsley and carrot seed in Finland. Journal of the Scientific Agricultural Society of Finland. 50: 91-102.

Van Nghiep, H. and A. Gaur. 2005. Efficacy of seed treatment in improving seed quality in rice (Oryza sativa L.). Omonrice. 13: 42-51.

Wearing, A. 1980. Alternark radicina on celery in South Australia. Australasian Plant Pathology. 9(4): 116.


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DOI: 10.33687/phytopath.004.02.1225

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Copyright (c) 2015 Mohammed W. Khudhair, Ruaa A. Jabbar, Naeem S. Dheyab, Bassim S. Hamad, Hadi M. Aboud, Hiatham S. Khalaf, Nadia J. Mohammed

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