تأثير المستخلصات المائية لبعض النباتات الشائعة في العراق على نمو الفطر الممرض Rhizoctonia solani و فطر المقاومة الحيوية Trichoderma harzianum و إنبات بعض الأدغال المهمة

Abstract EN

The study aimed to know the effect of shoot and root extracts of the following wild plants: Prickly alhagi (Alhagi maurorum), Palesting (Cuscuta palaestina),Wild oats (Aveno fatua), Cowbane (Chenopodiummurale), Aster (Aster tripolium), Field bind weed (Convolvulus arvensis), Suwad (Schanginina aegypiace), Cactus (Optunia sp.), Alkali weed (Cretica cressa), Prostrate Pigweed (Amaranthus blitoides), Prickly lettuce (Lactuca secriola), Athel pine (Tamarix spp.), and (Conocarpus lancifolius Engl) on the radial growth of the pathogenic fungus Rhizoctonia solani and bio control agent Trichoderma harzianum .

The study showed that the hot extract of palesting flament (Cuscuta palaestina) and (Conocarpus lancifolius Engl) were more effectiveness to inhibit the growth of R.solani at 5% concentration.

The average of fungal growth was 2.88 and 2.70 cm respectively compared with 3.88 cm in control treatment.

The hot extract of palesting flowers at 10% concentration inhibited the radial growth of R.solani to 4.48 cm compared with 6.46 cm in the control treatment.

In addition the results showed that the hot extract at concentrations 15,30 and 45% reduced the seed germination of the weed Wild radish to 33.3 ,3.3 and 6.6 respectively as compared with 63.3% , and the field bind weed to 10.0 and 3.3% at 30 and 45% concentrations as compared with 33.3% in the control Whereas the seed germination of weed Common sow thistle were 32.1 and 18.3% in the above two concentrations as compared with 84.7% in the control.

In this study manual factory portable filtration equipment was made from simple tools with low cost and high efficiency in filtration of the crude extraction.

The new equipment helped to accelerate the filtration 38 times compared with the ordinary method.