Allelopathic Effect of Aqueous Extract for Malva parviflora and Torilis arvensis Weeds on Germination and Growth of Pumpkin (Cucurbita moschata L.) and Cucumber (Cucumis sativus L.)

This search was carrid out to study the effect of aqueous extract of vegetative system of Malva parviflora L. and Torilis arvensis L. at concentration (10 & 20)% w:v on seedling germination and growth of Pumpkin and Cucumber The results of laboratory experiment, showed variant levels between stimulation and inhibition when compared to control, which included high stimulation (50%) in the dry weight for radical and plumule of Pumpkin at concentration (10 & 20)% from Malva parviflora extract , whereas the high in hibition (50%) in dry weight for radical by effect Torilis arvensis L. extract. In Cucumber seedling, the highest increasing was (66.66%) in germination at (10%) from Torilis arvensis L. extract. The green house experiment showed the highest stimulation (300%) In dry weight for root of Pumpkin by effect Malva parviflora extract at (20%), as well as high in reduction was (62.5) in fresh for root system at (20%) of Torilis arvensis L. extract. The leaves & flowers number and carbohydrate condect for Pumpkin and Cucumber effected by addition of aqueous, the highest increasing (20%) in leaf Cucumber at (20%) from Malva parviflora extract but in carbohydrate was (69.23%) of Pumpkin at (20%) from Torilis arvensis L. extract. Whereas effected variation in flowers number of Pumpkin between inhibition and stimulation compared with control.