The Effect of Azotobacter, Mycrorrhizae and Humic Acid on the Vegetative Traits of vigna radiatal

Abstract

A study was conducted in the summer season of 2022 in the village of Aday in Baquba District -Diyala Governorate on the mung plant Vigna radaitaL. (a local green variety) in clay soil ,inorder to study the effect of bio-fertilization with Azotobacter chroococcumand the Mycorhiza fungi (Glomus mosseae) and organic fertilization using humic acid on the vegetative characteristics of the mung bean (V. radaitaL.). The Experiment were carried out according to the randomized complete block design (R.C.B.D) with three replications using two fertilization, the first was biological fertilization, which included four treatments, namely (without addition, the addition of Azotobacter, the addition of Mycorrhizae, and the addition of Azotobacter + Mycorrhizae) and the second was organic fertilization, which included four concentrations of humic acid 0, 3, 6 and 9 gm.l-1 the result findings were:The treatment of biofertilization by adding Azotobacter and Mycorrhizae in all the studied characteristics of plant height, root length, number of branches, leaf area of the vegetative total reached76.87 cm, 43.01 cm,15 branchplants-1, 660.77 cm2. The treatment of organic fertilization with humic acid at aconcentration of 9 gm.l-1was superior giving it the highest mean of plant height, root length, number of branches, leaf area of the vegetative total77.6cm, 16cm, 15.39branchplant-1 , 660.83 cm2 .