Global demand to increase food production and simultaneously reduce synthetic nitrogen
fertilizer inputs in agriculture are underpinning the need to intensify the use of legume crops …

Bacterial colonization of the rhizosphere is critical for the establishment of plant–bacteria
interactions that represent a key determinant of plant health and productivity. Plants …

Biological N2 fixation represents the major source of N input in agricultural soils including
those in arid regions. The major N2-fixing systems are the symbiotic systems, which can play …

Major constraints for plant growth on acid mineral soils are toxic concentrations of mineral
elements like Al, of H+, and/or low mineral nutrient availability either as a result of solubility …

summary Aluminium is the most important growth‐limiting factor in many acid soils
throughout the world. Physiological effects of Al toxicity and mechanisms of tolerance are not …

Attachment of soil bacteria to plant cells is supposedly the very early step required in plant–
microbe interactions. Attachment also is an initial step for the formation of microbial biofilms …

Legumes represent some of the most important crop species worldwide. They are able to
form novel root organs known as nodules, within which biological nitrogen fixation is …

During the past four decades we have witnessed the doubling of the human population and
a concurrent doubling of food production (Vance, 2001). Plant nutrition has played a key role …

Inoculation of legumes under field conditions with superior nitrogen-fixing rhizobia does not
always result in the desired yield increase. Often it is observed that the inoculum strain fails …

Soil stresses such as salinity and acidity may adversely affect nitrogen (N) 2-fixation. The
hypothesis of this study is that soil salinity and acidity inhibit soybean [Glycine max (L.) Merr.] …