Yield and Rhizosphere - microflora of Cowpea in Response to Magnesium Fertilization in Lateritic Soils of Kerala

2021 ◽  
Author(s):  
V.P. Soniya ◽  
P.S. Bhindhu
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Root Colonization ◽  
Arbuscular Mycorrhizal ◽  
Nitrogen Fixing ◽  
Nitrogen Fixing Bacteria ◽  
Free Living ◽  
Spore Count ◽  
Lateritic Soils ◽  
Magnesium Uptake

Background: Magnesium deficiency has become a major nutritional disorder in lateritic soils of Kerala. Appropriate magnesium fertilization is the best strategy to combat deficiency issues. Apart from correcting nutritional deficiency, magnesium fertilization has an influence on the growth of beneficial microbes such as nitrogen fixing bacterias and arbuscular mycorrhizal fungi. The experiment aimed to investigate the effect of magnesium fertilization on crop yield and population rhizosphere micoflora of cowpea in lateritic soils of Kerala.Methods: A pot culture experiment was conducted with a gradient of magnesium additions ranging from 5 mg kg-1 to 80 mg kg-1 of soil along with recommended dose of fertilizers. Population of rhizobium, free living nitrogen fixing bacteria, spore count of arbuscular mycorrhizal fungi and per cent root colonization of arbuscular mycorrhizal fungi were studied during flowering. The available magnesium and magnesium uptake were also worked out during harvest. Yield and yield contributing characteristics of cowpea were measured during harvest stage.Result: Magnesium addition produced significant variations in population of rhizobium and free- living nitrogen fixing bacteria whereas spore count of AMF and per cent root colonization of AMF did not vary according to the added doses of magnesium. A higher population of rhizobium, free living nitrogen fixers, root nodules, magnesium uptake, plant height and yield were obtained in the treatment where magnesium was applied @ 10 mg kg-1 soil.

Substrates for the production of Samanea saman (Jacq.) Merr seedlings inoculated with nitrogen-fixing bacteria and arbuscular mycorrhizal fungi

Symbiosis ◽  
2020 ◽  
Vol 82 (3) ◽  
pp. 157-163
Author(s):  
Gustavo Wyse Abaurre ◽  
Orivaldo José Saggin Júnior ◽  
Gilmar Schäfer ◽  
Sergio Miana de Faria
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Nitrogen Fixing ◽  
Nitrogen Fixing Bacteria ◽  
Samanea Saman

Nitrogen-fixing bacteria, arbuscular mycorrhizal fungi, and the productivity and structure of prairie grassland communities

Oecologia ◽  
2012 ◽  
Vol 170 (4) ◽  
pp. 1089-1098 ◽  
Author(s):  
Jonathan T. Bauer ◽  
Nathan M. Kleczewski ◽  
James D. Bever ◽  
Keith Clay ◽  
Heather L. Reynolds
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Nitrogen Fixing ◽  
Nitrogen Fixing Bacteria ◽  
Grassland Communities

scholarly journals MICROBIAL INTERACTIONS IN THE DEVELOPMENT OF THE BIOMASS OF GLIRICIDIA

2018 ◽  
Vol 31 (3) ◽  
pp. 612-621 ◽  
Author(s):  
TAMIRIS APARECIDA DE CARVALHO SANTOS ◽  
GEOVANIA DOS SANTOS MENEZES ◽  
JESSICA SILVA SANTOS ◽  
LARISSA DE SOUZA GOIS ◽  
SÉRGIO LUIZ MENDONÇA NASCIMENTO ◽  
...  
Keyword(s):  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Dry Mass ◽  
Mycorrhizal Colonization ◽  
Microbial Interactions ◽  
Nitrogen Fixing ◽  
Nitrogen Fixing Bacteria ◽  
Dark Septate Fungi ◽  
Number Of Branches

ABSTRACT The objective of this work was to evaluate the interaction of microorganisms and phosphorus dosages in the development of gliricidia. The experimental design was completely randomized with six treatments (control, native microbial inoculant, and four arbuscular mycorrhizal fungi isolates: UFLA05 - Gigaspora albida, UFLA351 - Rhizoglomus clarum, UFLA372 - Claroideoglomus etunicatum, and UFLA401 - Acaulospora morrowiae), with four replicates. The parameters evaluated were: height plant, the number of branches, shoot and root dry mass matter, root length and volume, leaf phosphorus, mycorrhizal colonization, the number of spores of the arbuscular mycorrhizal fungi, the number of nodules of nitrogen fixing bacteria, and the presence of endophytic dark septate fungi, after 95 days of inoculation. The high mycorrhizal colonization of gliricidia does not guarantee an increase in biomass, which depends on the interaction of the arbuscular mycorrhizal fungi, the endophytic dark septate fungi, the nitrogen fixing bacteria, and the endophytic bacteria. Gliricidia was responsive to the inoculation of the native microbiota, UFLA372 and UFLA401. Mycorrhizal colonization by UFLA401 was influenced by the presence of nitrogen fixing bacteria. Gliricidia was not responsive to the inoculation of UFLA05 and UFLA351. The presence of the endophytic dark septate fungi did not inhibit mycorrhization and the formation of nodules of nitrogen fixing bacteria in gliricidia.

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