000			03663cab a2200313Ia 45 0
001			u211887
003			SIRSI
008			160530s2008 ua ss b eng d
040			_aEAL
041			_aeng _bara
090			_aART AASM V46 No2 5
100	1		_aEI-Fiki, A.I.I.
240	1	0	_aAnnals of agricultural science, Moshtohor, 2008 v.46 (2) _h[electronic resource].
245	1	0	_aInduction of defence response in strawberry plants to root-rot disease using some bioagents _h[electronic resource].
246	1	5	_aاستخدام المقاومة نباتات الفراولة ضد مرض عفن الجذور باستخدام بعض العوامل الحيوية.
300			_ap.bo13-22
504			_aIncludes references.
520			_aTo control strawberry root rot complex is common and increasing problem in perennial strawberry plantings worldwide. In many cases the causes of root rot were not detected or it was referred to several pathogens (MoroCko, 2006). Rhizoctonia so/ani Kuhn and R . .fragarlae play a very important role in strawberry root rot (D'Ercole, 1993). Incidences of infection of plants by potentially damaging pathogenic fungi included 13-42% with Sclerotium rolftii, 15-96% with Fusariumoxysporum, 4-17% with Macrophomina phaseolina, 17-42% with Pythium aphanidermatum and 67-92% with Rhizoctonia so/ani. In general, the high incidence of pathogenic fungi, especially S rolftii, F. oxysporum, P. aphanidermatum, and R so/ani, and the severity of root disease caused by them was undoubtably contributed to poor plant growth, early plant mortality, and low yields at Gainesville, USA (Locascio et al., 1999). Biological control of soilborne pathogens by introduced microorganisms has been studied for over 65 years, but during most of that time it has not been considered comercially feasible. Since about 1965, however, interest and research in this area have increased steadily, as reflected by the number of books and reviews about it that have appeared. Concurrently, there has been a shift to the opinion that biological control can have an important role in agriculture in the future, and it is encouraging that several companies now have programs to develop biocontrol agents as commercial products (Weller, 1988). Biological control visualizes a control of disease with the help of living organisms. ht case of root disease, organisms occur in soil which suppress the activity of disease fungi (Mehrotra and Caludius, 1972). Two bacterial isolates and one strain of Trichoderma harzianum were tested alone and in combination with chitin for efficacy in the control of root rot disease caused by Phytophthora capsici and Rhizoctonia so/ani in pepper plants under greenhouse conditions. ht in vitro assays, B. subtilis and T. harzianum were antagonistic against P. capsici and R so/ani and produced high levels of chitinase. B. licheniformis and T. harzianum reduced Rhizoctonia-rot. Reduction of root rot disease was accompanied by increased yield (SidAhmed et al., 2003). A combination of two compatible micro-organisms, i.e. Trichoderma harzianum and Streptomyces rochet, both antagonistic to the pathogen Phytophthora capsici, was used to control root rot in pepper.
546			_aSummary in Arabic.
650		0	_aStrawberries _xDiseases and pests _xControl.
650		0	_aRoot rots _xBiological control.
650		0	_aDeficiency diseases in plants.
700	1		_aEl-Habaa, G. M.
700	1		_aFlaifel, S.M.A.
700	1		_aHafez, M.A.
773	0		_tAnnals of agricultural science, Moshtohor. _g2008.v.46(2) _x1110-0419
856	4	0	_uhttp://nile.enal.sci.eg/EALE/2008/AASM/4608/2/13bo.pdf _zFull Text Article
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