ALLOPATHIC EFFECT OF (TAGETES ERECTA L.) AND (SORGHUM HALEPENSE) ON GROWTH AND PRODUCTIVITY OF PHASEOLUS VULGARIS L.Raghad Mahmud Mirry, Ali Jabbar Abdulsada and Mahdi Salah HamedAbstract The study was carried out to evaluation of effect of the shoot and root residues of (Tagetes erecta L.) and (Sorghum halepense) on the growth and Productivity of green beans. The results showed that there was a difference between the stimulation and inhibition of the root and vegetative residues of the (Tagetes erecta L.) and (Sorghum halepense). The laboratory results showed that the aqueous extract of the root and shoot of the (Tagetes erecta L.) plant were superior in germination rate, germination speed, and length of the root and the length of the shoot of green bean seeds. The results were better for the root part, where the concentration was recorded at 10%, the highest germination rate 100%, the germination speed 1. Also the results showed that the green bean seeds were treated with the aqueous extract of the root and Shoot parts of the (Sorghum halepense) plant significantly reductions on the same parameters were studied. In the field experiment, the root residues of the (Tagetes erecta L.) plant showed 16 g / kg soil significantly higher than the Shoot residues in the studied traits (number of root nodes, plant height (cm), leaf area (dm2), dry weight of vegetative (g), Number of secondary branches, diameter of stem (mm), concentration of chlorophyll in leaves (mg/g), dry weight of root (g), date of flowering (day), total number of flowers, nodes ratio and first harvesting time. |