تقويم كفاءة بعض عوامل المقاومة الحيوية و الفيزيائية و مستخلص نبات الالوفيرا Aloe vera في مقاومة فطر Rhizoctonia solani المسبب لمرض تعفن البذور و موت بادرات الحنطة في الترب المزيجية و الرملية

Abstract EN

The study aims to evaluate the effect of some of the factors of the biological and physical control and the extract of Aloe vera plant in controlling Rhizoctonia solani fungus which causes root rot and damping – off seedling in the sedimertary and desert soil.

Results clarified that the best treatment in percentage of plantation was the fertilizer with the biological Control Agents, Trichoderma harzianum and Cheatomium elatum where it reached 86.68% in comparison with the control treatment which gave 75.94%.

whereas for chlorophyll, the best treatment was fertilizer with the fungicide Rizolex and the biological control agents where it reached to 2.24 mg 100gm-1 in comparison with control treatment and fertilizer treatment with extract of Aloe vera plant and fertilizer treatment only, which reached 1.26, 2.1, 2.11mg 100gm-1 respectively.

As for the number of ears, the weight of 100 grains and the weight of the biological product, the fertilizer treatment with the extract and the biological control agents was exceeded and reached 16.71ear/plant, 3.29gm and 13.59gm respectively in compared with control treatment which amounted 5.05ear/plant, 1.33gm, 1.4gm and 6.98gm respectively.