Soil Parameters which Affect the Survival of Azospirillum brasilense

Azospirillum– plant relationships: environmental and physiological advances (1990–1996)

“…In the absence of plants, the general survival characteristics were related mainly to the geographic origin of the soil and not to prevailing environmental conditions; i.e., in some soils they survived well and in others survival was poor. The only direct effect of soil variables on survival was that the concentrations of CaC0 3 and sand both have adverse effects (Bashan et al 1995a(Bashan et al , 1995b.…”

“…( ii) Without a secure attachment, water may wash the bacteria away from the rhizoplane to perish in the surrounding, nutrient-deficient soil. Azospirillum is known to survive poorly in many soils without host plants Bashan et al 1995aBashan et al , 1995b. (iii) Association sites on roots with no attached Azospirillum are vulnerable to other aggressive, possibly nonbeneficial colonizers.…”

Azospirillum sp . inoculation in wheat, barley and oats seeds greenhouse experiments

“…This inconsistency can be related with the not controlled field conditions, technique and inoculation rate, low survival of the inoculated strains, physical and chemical characteristics of the soil, physiologic state of the bacteria, inappropriate strain, plant genotype, presence of high number of native microorganisms and pesticides influence (Bashan et al, 1995;Chotte et al, 2002;Itzigsohn et al, 1995;Ramos et al, 2002). More consistent results are necessary, for the commercial development of inoculants with Azospirillum (Fages, 1994).…”

“…The results inconsistency in inoculation experiments is related with the inoculation techniques, inoculation rate, low survival of inoculated strains, physical and chemical characterization of the soil, physiological state of the bacteria, improper strain, plant genotype, presence of high number of native microorganisms and pesticides influence. (Bashan et al, 1995;Fages,1994;Itzigsohn et al 1995). The present work had as objective to verify the Azospirillum sp.…”

The Biphasic Role of Cupper and Counteraction with <i>Azospirillum brasilense</i> Application on Growth, Metabolities, Osmotic Pressure and Mineral of Wheat Plant

“…Azospirillums species are among facultative endophytic diazotrophic group which found on the surface and interior of roots [5]. Azospirillum has been reported as plant growth promotion in field and nursery plants, resulting in significant effects in plants [6].…”