الفهرس 
Plant growth hormone requirementsOnly 14 pages are availabe for public view
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Abstract
S~C5G90 5, when Beijsrinck coined -1-he genesic narzle Azotobaoter I-PUI- i-o khe asrabic ’bacteria whicb can fix abospheric nikogen and live freely in the soil, the role of t h i s group of bacberia in the so5.L uas subjected to much conlzoversyB bhy i n v e s t i g a t o r s noticed t h a t A--zo tabao%er pLayaroSe in soil. f er biliiiy vihi3.e ot hem ~ l a d e dth a t t h e s e b a c t e r i a pl ay no p u t i n t h a t respect, However t7he azotobacters are. now kmovm ts bs I’ souroes of diff ersnt substancss such as vitamins, plan* growljh hormones, combined nitrogen!. , etc . These subs- , ,. ,. tances may impart the f e r t i l i t y of so^ .~dnsequsntly, when endeavomjng ko plan t h i s workt khs study sf Azot~~&cxs~p p a ax producers of plmt-gromth hormones r rspresented itself.,. This work, thus, s t a r t e d by bhe $-solation iand charac terieation of dif f went l o c a l l y i s o l a t e d Aao tobm 0...-4.-- strains. The capaoity of nitrogm f .&ation as iell as I. the biosynthssis of p l a n t growth hormones was investigated under diff erenk condi t ions .,. lh addition, an experheni; was constxucted in order ’ t o shdy the r o l e of an i s o l a t e d A- z_ ot;obacAer s pp . in kbe grow& of a c u l t i v a t e d ’ I plant by injecting sterils and non sterile s o i l sa by this organisno