- Thursday, June 18, 2009
- Published at:The first Conference on Biotechnology Research and Application in Palestine, 3-4 April, 2009, Furno Hall, Bethlehem University, Bethlehem, Palestine
- Biocontrol of stored grain insects and postharvest rot diseases in fresh produce of fruits and vegetables in Palestine
Y. Batta
Department of Plant Production & Protection, Faculty of Agriculture, An-Najah National University, Nablus, West Bank, Palestine
Abstract
The objective of the present poster was to summarize the research results obtained during the last five years due to application of biopesticides for protection of the stored grain from insect damage and the fresh produce of fruits and vegetables from postharvest fungal rot infection. Bioprotection of stored grain from insects was achieved by application of effective mycoinsecticides like the entomopathogenic fungi [e.g. Metarhizium anisopliae (Batta 2004c and 2005a; Batta and Abu Safieh 2005) and Beauveria bassiana (Batta 2008)] formulated in novel liquid or dry forms, whereas bioprotection of fresh produce of fruit and vegetables from fungal rot pathogens was obtained by application of eff
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- Tuesday, January 1, 2008
- Published at:Not Found
- The present research is aimed at a formulation of the entomopathogenic fungi, Beauveria bassiana (Bal.) Vuillemin and Metarhizium anisopliae (Metch.) Sorokin, in two types of diatomaceous earth dusts, fossil shield and Silico-Sec, are then applied against the adults of three species of stored-grain insects: Sitophilus oryzae L., Rhyzopertha dominica Fab. and Tribolium castaneum Herbs. Effect of the treatment was assessed by comparing the mortality percentage of the adults of the three insect species exposed to the formulated fungi with that of the adults exposed to the unformulated fungi or the diatomaceous earth dusts or the undisturbed control. Results obtained from these exposures have indicated that treatment of the adults with the formulated fungi resulted in a significantly higher mean mortality percentage compared to the treatment with the unformulated fungi or the diatomaceous earth dusts or the undisturbed control. A synergistic interaction between the effect of fungal species and the diatomaceous ea
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- Saturday, September 1, 2007
- Published at:Not Found
- The present study was conducted to assess the susceptibility of seven local wheat cultivars from Palestine to infection with black stem rust caused by Puccinia graminis f. sp. tritici. Two techniques of disease inoculation were applied during bioassays: global inoculation of entire wheat plants with urediospores and localized inoculation with urediospores on wheat leaf-pieces incubated under humid conditions. Susceptibility of tested cultivars was evaluated according to disease scale based on number and size of typical uredial pustules that appeared after inoculation on entire plants or leaf-pieces. Results obtained on bioassay of susceptibility and disease rating on entire plants indicated that Anbar, Kamatat and Hetiya safra cultivars were the least susceptible to P. g. tritici infection, whereas Debiya beda cultivar was the most susceptible. The other tested cultivars such as Nab-El-Jamal, Debiya sawda and Senf 870 were moderately susceptible. On leaf-pieces, Anbar and Kamatat were the least susceptible cu
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- Tuesday, June 19, 2007
- Published at:Not Found
- Aims: To formulate the entomopathogenic fungus Beauveria bassiana in invert emulsion, then apply it against adults of almond bark beetle (Scolytus amygdali) under laboratory and field conditions.
Methods and Results: The effect of formulated B. bassiana in invert emulsion against S. amygdali adults was shown by comparing the mortality percentage of adults exposed to the formulated fungus using a Petri dish treatment method and by field applications to infested peach trees with mortality of adults exposed to the unformulated fungus or the untreated control. Results obtained from both exposure methods have indicated that treatment of S. amygdali adults with the formulated fungus resulted in a significantly higher mean mortality percentage (P < 0·05) when compared with the treatment with the unformulated fungus or the untreated control. This mortality ranged from 81·2 to 100%, 10 days after treatment with the formulated fungus when compared with 6·7 to 49·6% mortality, 10 da
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- Monday, January 1, 2007
- Published at:Not Found
- Control of primary postharvest diseases caused by Rhizopus stolonifer, Botrytis cinerea, and Penicillium expansum on a variety of fresh fruit was evaluated with an invert emulsion formulation of Trichoderma harzianum. Diseases evaluated were quantified by the period of protection conferred by the antagonist and the diameter of decay lesions. Treatment of the various fruit species with formulated T. harzianum conidia in an invert emulsion significantly (P ≤ 0.05) reduced the mean lesion diameters of R. stolonifer on apple, pear, peach and strawberry, B. cinerea on grape, pear, strawberry, and kiwifruit, and P. expansum on grape, pear, and kiwifruit in comparison with the control treatment. Significant differences (P ≤ 0.05) were obtained in the mean percent reduction in lesion diameter caused by the same postharvest pathogens on the same fruit species due to the treatment with the formulated T. harzianum conidia relative to control treatment. The greatest mean percent reduction (86.7%) was obtained on ap
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