استخدام أنواع من الأسمدة العضوية و مستخلصاتها لبيان تأثيرها على الفطر المسبب لمرض اللفحة المتأخرة على الطماطة Phytophthora infestans (Mont.)‎

الملخص EN

The aims of this study is to assess the types of manure extracts (poultry , cattle and sheep) and their effectiveness against Phytophthora infestans causes late blight on tomatoes.

The results showed that poultry manure contains colony forming units more than sheep and cattle manure per gram, it was the highest in poultry manure (12.2x104) CUF g.

manure and sheep manure in the least (6.70x104)) CUF g.

manure.

The results showed also superiority to the poultry manure as containing important nutrients (N, P and K) at a higher rate (37, 25 and 39)%, respectively, followed by cattle and sheep manure, which was (18, 4 and 29)%, respectively.

There is a high of antagonism between fungi and compost suspension, especially poultry manure, which showed highest antagonism in reducing radial growth of Phytophthora infestans percentage of 65.86%, while it was less in sheep manure at a rate of 31.33% .

It was observed that there is a significant effect of poultry manure extract in reducing of dry weight of Phytophthora infestans (0.4 21) g.

as compared to control (0.7 34) g.

The cattle and sheep manure has no a significant effect in reducing the dry weight of the fungus.

The results showed also that the addition of all types of manure extracts was useful in reducing the infection percent of Phytophthora infestans, the most influential is poultry manure as it reached plant height 51.4 cm and fresh weight of shoot 78.46 g.

and dry weight 5.7 g.

and fresh weight of root 6.95 g.

and dry 2.98 g.

as compared with the control treatment of the presence of pathogenic fungus were 35.5 cm, 57.69 g., 3.00 g., 4.00g.

, 0.22 g.

Respectively