Response of<i>Vigna Unguiculata</i>Grown Under Different Soil Moisture Regimes to the Dual Inoculation with Nitrogen-Fixing Bacteria and Arbuscular Mycorrhizal Fungi

Stancheva, Ira; Geneva, Maria; Hristozkova, Marieta; Sichanova, Mariana; Donkova, R.; Petkova, Gergana; Djonova, Efrosina

doi:10.1080/00103624.2017.1358740

Cited by 20 publications

(9 citation statements)

References 30 publications

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“…were found This shows that the natural mycorrhizal infection rate of cowpea is high in this study location, regardless of the rhizobial inoculation or soil characteristics. This concurs with the previous report which specified that the symbiosis with both AMF and N fixing rhizobia efficiently increased cowpea growth and production (Stancheva et al, 2017).…”

Section: Discussionsupporting

confidence: 93%

Does inoculation with native rhizobia enhance nitrogen fixation and yield of cowpea through legume-based intercropping in the northern mountainous areas of Vietnam?

et al. 2020

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In the Northern mountainous region of Vietnam, cassava–cowpea intercropping system has been widely promoted with support from the local agricultural department. However, cowpea yield is often limited because of a low Biological Nitrogen Fixation (BNF) activity due to its low natural nodulation and lack of available effective Rhizobium products. The aim of this study was to identify the most effective native rhizobia isolate nodulating cowpea with the potential to increase BNF and yield of cowpea. A greenhouse experiment was initially conducted with five treatments: three native rhizobia isolates (CMBP037, CMBP054, and CMBP065); a control (no inoculation and no N application); and N+ (no inoculation, application of N as KNO3). Field inoculations were carried out and the treatments were as follows: a control (no inoculation); CMBP (037+054) – a mixture of strains from Mau Dong; CMBP065 strain from Cat Thinh. CMBP054 and CMBP065 had the highest nodulation in the greenhouse (46.4 and 60.7 nodules plant−1, respectively) and were rated as effective with symbiotic efficiency (SEF) of 54.56 and 55.73%, respectively. In the field, CMBP (037+054) recorded significantly higher nodulation (19.4 nodules plant−1) than the control (11.7 nodules plant−1). CMBP (037+054) also increased cowpea shoot dry weight, shoot N, and yield by 28.6, 4.9, and 10.5%, respectively, compared to the uninoculated control. This effect was slope dependent (statistically significant in moderate and steep slope, not with gentle slope). Besides, the high expansion rate of intercropping with cowpea showed the high adoption level of these agroecological practices by local farmers. This study reveals the potential of native rhizobia inoculation to enhance soil fertility and sustainable agriculture in the Northern mountainous region of Vietnam and proposes enhanced efforts to promote the availability and utilization of effective inoculants for cowpea.

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Section: Discussionsupporting

confidence: 93%

Does inoculation with native rhizobia enhance nitrogen fixation and yield of cowpea through legume-based intercropping in the northern mountainous areas of Vietnam?

et al. 2020

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“…The improved sugar content due to supplementation with microbial inoculants might be due to better absorption and mobilization of nutrients by the action of Burkholderia seminalis, Burkholderia sp. and Bradyrhizobium sp.The results were in conformity with Stancheva et al (2016) who reported that Bradyrhizobium japonicum solely and in combination with arbuscular mycorrhizal fungi increased the content of proteins, soluble sugars and total phenols in the cowpea.…”

Section: Total Sugarssupporting

confidence: 92%

Improvement in the Quality Attributes of Forage Cowpea by Use of Liquid Microbial Inoculants

Ramya

Pandove

Oberoi

et al. 2021

IJAR

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Background: The present investigation was accepted to study the impact of liquid microbial inoculants on the quality parameters of forage cowpea (Vigna unguiculata). There upon, the field experiment was conducted during kharif 2018 at Punjab Agricultural University, Regional Research Station, Bathinda and at Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, Punjab respectively. Methods: The experiment was laid out in randomized complete block design with a total of eleven treatment combinations of liquid microbial inoculants (Burkholderia seminalis, Burkholderia sp. and Bradyrhizobium sp.) with 75% and 100% RDF and replicated thrice. The qualitative properties including crude protein (CP), neutral detergent fibre (NDF), acid detergent fibre (ADF), in-vitro dry matter digestibility (IVDMD), total soluble sugars and ash content were determined on the forage samples. Result: The results indicated that the treatment T10 (75% RDF + Burkholderia sp. + Burkholderia seminalis) has reduced ADF% and NDF% at both the locations. Forage with high ADF and NDF% content tends to have low digestibility, low ADF and NDF% is desirable. In addition, treatment T10 showed significantly (p less than 0.05) improved IVDMD (79.98%) and total sugars (15.82 mg/g) at Ludhiana and at Bathinda, T10 treatment significantly escalated crude protein (19.93%), total ash content (11.55%), total chlorophyll content (2.07 mg/g) and total sugars (15.80 mg/g).Further correlation studies showed highly significant positive correlation among ADF% and NDF% and there negative correlation with all other quality components at both the locations. Consequently, liquid microbial inoculants can play pertinent role in ameliorating fibre quality and interrelation between the various quality parameters proposed that forage with low ADF% and NDF% can be selected for simultaneous amelioration in different attributes of quality.

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“…The most frequent potential association between biogeochemical cycles was between P and C. Methane oxidation was previously shown to correlate positively with P concentration in soil/sediment [ 7 ] and acid-phosphatase genes have been shown to be present in all methanotrophic bacteria [ 7 ]. One of the predicted driver taxa, Bradyrhizobium , was reported to enhance acid phosphatase activity in arbuscular mycorrhizal fungi [ 35 ] and has a known association with methanotrophic bacteria in rice paddy soils [ 36 ]. Similarly, a positive response was previously observed between P concentration and C fixation in seawater [ 31 ].…”

Section: Discussionmentioning

confidence: 99%

Soil Biogeochemical Cycle Couplings Inferred from a Function-Taxon Network

Stirling

Liu

et al. 2021

Research

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Soil biogeochemical cycles and their interconnections play a critical role in regulating functions and services of environmental systems. However, the coupling of soil biogeochemical processes with their mediating microbes remains poorly understood. Here, we identified key microbial taxa regulating soil biogeochemical processes by exploring biomarker genes and taxa of contigs assembled from metagenomes of forest soils collected along a latitudinal transect (18° N to 48° N) in eastern China. Among environmental and soil factors, soil pH was a sensitive indicator for functional gene composition and diversity. A function-taxon bipartite network inferred from metagenomic contigs identified the microbial taxa regulating coupled biogeochemical cycles between carbon and phosphorus, nitrogen and sulfur, and nitrogen and iron. Our results provide novel evidence for the coupling of soil biogeochemical cycles, identify key regulating microbes, and demonstrate the efficacy of a new approach to investigate the processes and microbial taxa regulating soil ecosystem functions.

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Response ofVigna UnguiculataGrown Under Different Soil Moisture Regimes to the Dual Inoculation with Nitrogen-Fixing Bacteria and Arbuscular Mycorrhizal Fungi

Cited by 20 publications

References 30 publications

Does inoculation with native rhizobia enhance nitrogen fixation and yield of cowpea through legume-based intercropping in the northern mountainous areas of Vietnam?

Does inoculation with native rhizobia enhance nitrogen fixation and yield of cowpea through legume-based intercropping in the northern mountainous areas of Vietnam?

Improvement in the Quality Attributes of Forage Cowpea by Use of Liquid Microbial Inoculants

Soil Biogeochemical Cycle Couplings Inferred from a Function-Taxon Network

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