Arbuscular Mycorrhizal Fungi and Bradyrhizobium Co-Inoculation Enhances Nitrogen Fixation and Growth of Green Grams (Vigna Radiata L.) Under Water Stress

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dc.contributor.authorMusyoka, Daniel Mumo
dc.contributor.authorNjeru, Ezekiel Mugendi
dc.contributor.authorNyamwange, Methuselah Mang’erere
dc.contributor.authorMaingi, John M.
dc.date.accessioned2022-06-09T08:39:12Z
dc.date.available2022-06-09T08:39:12Z
dc.date.issued2020
dc.descriptionArticle.en_US
dc.description.abstractGreen gram (Vigna radiata L. Wildzek) is a neglected crop with great potential to boost food security among small scale farmers. Inoculation of this crop with beneficial soil microbiota can sustainably improve its production especially under water stress conditions. Here, we aimed at determining the effect of bradyrhizobia and arbuscular mycorrhizal fungi (AMF) co-inoculation on growth and nitrogen fixation of green grams under water stress conditions. Potted green grams variety KS20 were planted in sterilized soil and inoculated with Bradyrhizobium, Funneliformis mosseae, Rhizophagus irregularis, a commercial consortium of four AMF isolates (Rhizophagus irregularis, Funneliformis mosseae, Glomus etunicatum and Glomus aggregatum) and a consortium of the four aforementioned AMF isolates and Bradyrhizobium. The plants were subjected to three water stress levels, irrigation after interval of 4 days, 8 days and 12 days and maintained for 50 days. After harvesting, the plants were measured for nodulation, percentage root mycorrhizal colonization, growth parameters and shoot nitrogen (N), phosphorous (P) and potassium (K). Remarkably, all AMF inoculations significantly P ≤ 0.05 increased shoot dry weight (SDW), root dry weight (RDW) and P compared to Bradyrhizobium and control plants under all the watering regimes. Inoculation with Rhizophagus irregularis resulted to highest shoot dry weight, root dry weight and P under water regime 3, which provided the most intense water stress condition. Moreover, strong positive correlation (R2 = 0.8765, P = 0.006) was observed between shoot dry weight, P and AMF root colonization under all watering regimes.en_US
dc.description.sponsorshipKenyatta Universityen_US
dc.identifier.citationMusyoka, Daniel Mumo, et al. "Arbuscular mycorrhizal fungi and Bradyrhizobium co-inoculation enhances nitrogen fixation and growth of green grams (Vigna radiata L.) under water stress." Journal of Plant Nutrition 43.7 (2020): 1036-1047.en_US
dc.identifier.urihttp://ir-library.ku.ac.ke/handle/123456789/23808
dc.language.isoenen_US
dc.publisherJOURNAL OF PLANT NUTRITIONen_US
dc.titleArbuscular Mycorrhizal Fungi and Bradyrhizobium Co-Inoculation Enhances Nitrogen Fixation and Growth of Green Grams (Vigna Radiata L.) Under Water Stressen_US
dc.typeArticleen_US
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