Hamdy A. Eldoksch
Not Available
Matilda F. Atteia
Not Available
Samiha M.H. Abdel-Moity
Not Available
ABSTRACT
The effect of biocontrol agents and natural products on brown leaf rust, Puccinia recondita f.sp. tritici, of wheat were studied under greenhouse and field conditions in 1998/99 and 1999/2000 seasons. Under greenhouse conditions, application of Plant guard (Trichoderma harizianum), Rhizo-N (Bacillus subtilis) and the yeast (Saccharomyces cerevisiae) gave reasonable control of leaf rust severity with disease reduction percentages of 64.29, 57.14 and 19.14%, respectively. Field application of formulated natural products during two successive seasons gave effective control of brown rust disease. Natural oil, peppermint oil, jojoba oil, eucalyptus oil and chenopodium oil were the most effective treatments in reducing leaf rust severity and also in improving grain yield. All natural products significantly reduced the rust disease incidence in wheat by 55.5-98.2% and subsequently led to an increase in the grain yield that ranged from 8.5-51.8%. Of the biocontrol agents applied in the field, Plant guard was the most effective treatment followed by yeast and then Rhizo-N. These bioagents significantly improved grain yield and increased 100 kernel weight relative to the untreated control. Sumi-8 fungicide (diniconazole) showed complete protection against rust disease incidence in both greenhouse and field trials.
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How to cite this article
Hamdy A. Eldoksch, Matilda F. Atteia and Samiha M.H. Abdel-Moity, 2001. Management of Brown Leaf Rust, Puccinia recondita of Wheat Using Natural Products and Biocontrol Agents. Pakistan Journal of Biological Sciences, 4: 550-553.
DOI: 10.3923/pjbs.2001.550.553
URL: https://scialert.net/abstract/?doi=pjbs.2001.550.553
DOI: 10.3923/pjbs.2001.550.553
URL: https://scialert.net/abstract/?doi=pjbs.2001.550.553
REFERENCES
- Biles, C.L. and J.P. Hill, 1988. Effect of Trichoderma harzianum on sporulation of Cochliobolus sativus on excised wheat seedling leaves. Phytopathology, 78: 656-659.
Direct Link - Chet, I., G.E. Harman and R. Baker, 1981. Trichoderma hamatum: Its hyphal interactions with Rhizoctonia solani and Pythium spp. Microbiol. Ecol., 7: 29-38.
CrossRefDirect Link - Elad, Y., I. Chet and J. Katan, 1980. Trichoderma harzianum: A biocontrol agent effective against Sclerotium rolfsii and Rhizoctonia solani. Phytopathology, 70: 119-121.
CrossRefDirect Link - Hofle, G., A.C.O. Sullivan and M. Sutter, 1995. The synthesis and fungicidal activity of derivatives of soraphen A substituted at position 12. Pesticide Sci., 43: 358-361.
Direct Link - Johnson, R., 1992. Past present and future opportunities in breeding for disease resistance with examples from wheat. Euphytica, 63: 3-22.
CrossRefDirect Link - Kolmer, J.A., 1995. Selection of Puccinia recondita f. sp. Tritici virulence phenotypes in three multilines of Thatcher wheat lines near isogenic for leaf rust resistance genes. Can. J. Bot., 73: 1081-1088.
Direct Link - Korsten, L., E.E. de Villiers, F.C. Wehner and J.M. Kotze, 1997. Field sprays of Bacillus subtilis and fungicides for control of preharvest fruit diseases of avocado in South Africa. Plant Dis., 81: 455-459.
Direct Link - Peterson, R.F., A.B. Campbell and A.E. Hannah, 1948. A diagrammatic scale for estimating rust intensity on leaves and stems of cereals. Can. J. Res., 26: 496-500.
CrossRefDirect Link - Redmond, R.D., J.J. Marois and J.D. MacDonald, 1987. Biological control of Botrytis cinerea on roses with epiphytic microorganisms. Plant Dis., 71: 799-802.
Direct Link