The Allelopathic Effect of Root Exudates of Mungbean and Maize Plants Affected by Metabiolic, Fertilizer and Mechanical Stress Factors on some Indicators of Germination of Cowpea Seeds

Abstract Allelopathic compounds are secondary metabolites created biologically by plants and microbes from the metabolism of carbohydrate, fats amino acids. The process their synthesis is affected type plants, path its photosynthesis, nutrition various stress processes. When released to rhizosphere, effect begins on soil organisms, as it considered a communication between plants. Which affects biological agricultural systemis. A randomized complete block design (RCBD) was adopted with factorial experiment three factors replication. carried out in one fields Al-Taliáh sub-district/Babylon governorate find allelopathic root exudates mungbean ( Vigna radiata L.) maize (Zea mays metabolic factors, fertilizer mechanical some germination indicators cowpea seeds unguiculata L.). effects varied studied traits, caused significant decrease radicle length (RL), seedlings (SL), vigor index (VI) for treatments chemical not stress, organic fertilizer, biofertilizer.