تأثير نوع و تركيز معادن الطين في كفاءة بكتريا azospirillum brasilense و نمو و حاصل نبات الحنطة triticum sativum

Abstract EN

A number of isolates have been isolated from rhizosphere area and the roots of wheat plant which are related to the species Azospirillum brasilense.

Also three types of clay minerals have been used Ca- Bentonite, Kaolonite and Flint clay, the experiment have been conducted after the inoculation of wheat seeds with Azospirillum brasilense and by using the three clay minerals with three different concentration (25%, 20% and 15%).The results proved a significant effect to the clay mineral (Ca-Bentonite and Flint clay) in the density of bacteria which gave the highest a verge of 1.72×106 1.76×106CFU.

ml-1 and highest dry weight and yield 5.27 g.potJ¹ and 9.08 g.potJ¹ respectively.

The results shown also that concentration 20% has a significant effect as compared with other concentrations which gave the highest dry weight and yield of wheat plant reached 4.83 g.potJ¹ and 7.57 g.potJ¹ respectively.