The effect of extracts and it's powdery in pathogenic fungi Fusarium oxysporum f.sp. lycopersesici and protect tomato plant from it infecation

	The effect of extracts and it's powdery in pathogenic fungi Fusarium oxysporum f.sp. lycopersesici and protect tomato plant from it infecation
Magazine of Al-Kufa University for Biology
Article 1, Volume 4, Issue 1, 2012, Pages 137-147
Abstract
This study aimed to test the effect of aqueous extracts of peel fruits of oak Quercus alba peel the fruits of pomegranate Punica granatum and the fruits of Citrullus colocynthis on growth and pathogenicity pathogenic fungus. Fusarium oxysporum f.sp.lycopersici The results of laboratory tests when the disclosure of chemical compounds effective in the water extracts studied the presence of most of the active substances in the extract of peel fruits of oak and influential in the growth of pathogenic fungus. The results showed the effectiveness of all the aqueous extracts used in the inhibition of fungal growth F.O.L where he excelled extract the rest of the in the inhibition of pathogenic fungus above when using the drilling wells with an average distance of inhibition 1.30 cm at concentrations of 10 and 20% compared with control treatment, which amounted to 0.00 cm in addition to the effectiveness of the aqueous extract of boiled peel oak in the inhibition of cumulative growth of pathogenic fungi, with total national average of 0.50 cm at concentrations of 5 , 10, 20% compared to the treatment of comparison, which amounted to 6.50 cm. while the aqueous extract of boiled peel pomegranates and the fruits of bitter melon is less effective in the inhibition of colony of F.O.L. It also achieved the aqueous extract of cold cobalt oak significant advantage in inhibiting the growth of pathogenic fungus as the growth rate the country 1.00 and 1.33 cm at concentrations of 2.5 and 5% respectively. It was found that the aqueous extract of the peel oak gave the highest rates of reduction in the rate of dry weight of pathogenic fungi at concentrations of 5 and 10%, which amounted to 0.00 gm for both concentrations compared to the treatment of comparison, which amounted to 6.16 gm. The regarding Added powder fruits Oak different concentrations in different soil and its impact on seed germination and seedling growth of tomato against pathogenic fungus F.O.L.were treated (Sterlezation soil+ 2.5% powder cobalt oak + fungus F.O.L) the best treatment to increase the percentage of seed germination, which amounted to 72% compared to the Pferoqat significant for my treatment comparison (Sterlezation soil only) and (Non sterlezation soil), who reached the 60 and 56%, respectively, also worked the same treatment to increase the percentage of seedlings of sound, which amounted to 62.33% and therefore have the same treatment to reduce the proportion of seed rotting and seedling infected and who reached the 28 and 9.66% and thereby protect tomato plants from infection .

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