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Inoculation of cereal crops and forage grasses with nitrogen‐fixing rhizosphere bacteria: Possible causes of success and failure with regard to yield response – a review
Author(s) -
Jagnow Gerhard
Publication year - 1987
Publication title -
zeitschrift für pflanzenernährung und bodenkunde
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 87
eISSN - 1522-2624
pISSN - 0044-3263
DOI - 10.1002/jpln.19871500602
Subject(s) - rhizosphere , microbial inoculant , agronomy , biology , nitrogen fixation , forage , inoculation , azotobacter , yield (engineering) , bacteria , horticulture , genetics , materials science , metallurgy
Recent field inoculation trials with Azospirillum and Azotobacter spp. applied to cereal and forage crops have shown extremely different results in yield response. Some aspects of bacteria‐plant interactions affecting yield response are discussed. These include provision of fixed nitrogen, specificity and adaptation to root habitat, influence of microbial metabolites, enhancement of VA‐mycorrhiza, displacement of deleterious rhizosphere microorganisms, differences between host plant genotypes, competitive ability and longevity of inoculants. Based on these considerations, needs for further research will be outlined.