000			03032cab a2200301Ia 45 0
001			u187489
003			SIRSI
008			101204s2006 ua ss b eng d
040			_aEAL
041			_aeng _bara
090			_aART MUJAS V31 NO5 23
100	1		_aShehata, S. T.
240	1	0	_aMansoura University journal of agricultural sciences, 2006 v. 31 (5) _h[electronic resource].
245	1	0	_aSelection of biocontrol agents for control of onion white rot disease _h[electronic resource].
246	1	5	_aانتقاء عوامل المكافحة الحيوية لمكافحة مرض العفن الأبيض فى البصل.
300			_ap.2863-2879.
504			_aIncludes references.
520			_aIsolation of bioagents was carried out from rhizoplane of healthy onion plants, 70 and 120 days after transplanting from different governorates, i.e. EI-Behera; EISharkia; Beni-Swif and EI-Menia. Only 21 isolates from the obtained 331 isolates have prevented sclerotial formation of Sclerolium cepivorum on NYDA medium, The inhibition zones of mycelial growth of S. cepivorum after 14 days were 13,9,7,4 and 2 ml for isolates Pseudomonas flourescens; Bacillus licheniformis 10D14; Bacillus licheniformis 6D11; 7D12 and Chaetomium globosum respectively. Most of treatments of potting medium. with bacterial isolates soon after onion seeds sowin9, increased the percentage of onion seed germination. The highest increase 19.5 % was achieved by isolates B. licheniformis 6D11 and B. amyloliquefaciens 1D9. The promising biocontrol agents that had promotion toward onion seed germination and plant growth were tested in greenhouse for their potential control of onion white rot. At 50 or 100 sclerotia/ Kg potting medium, the best reduction in dead plants was achieved by treatment with P. flourescens, B. licheniformis 6D11. T. harzianum, B. amyloliquefaciens 1D9. C. globosum or Paenibacillus polymyxa 9014. Clear significant increase in plant height was occurred by treatment with P. flourescens followed by B. licheniformis 6D11. C. globosum, B. amyloliquefaciens 1D9, Trichoderma harzianum and Paenibacillus polymyxa 9014. However, in field expertment all applications were highly effective in reducing the percentage of dead onion plants due to white rot infection till the end of growing season (4.5 months from transplanting). The isolates, P. flourescens. B. licheniformis 6D11, B.amyloliquefaciens 1D9 or T. harzianum isolates were the most effective on disease control in the field. Significant increase in bulb yield was recorded with all tested isolates especially those of bacteria.
546			_aSummary in Arabic.
650		0	_aWhite rot (Onions) _xControl.
650		0	_aPhytopathogenic fungi _xControl.
650		3	_abiological control.
700	1		_aMosbah, M. M.
700	1		_aHegazi, Late M. F.
773	0		_tMansoura University Journal of Agricultural Sciences. _g2006.v.31(5) _x1110-0346 _7nnas _wu182197
856	4	0	_uhttp://nile.enal.sci.eg/EALE/2006/MUJAS/3106/5/2863.pdf _zFull text Article
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