Rhizobia Inoculation Supplemented with Nitrogen Fertilization Enhances Root Nodulation, Productivity, and Nitrogen Dynamics in Soil and Black Gram (Vigna mungo (L.) Hepper) (original) (raw)
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INTERNATIONAL JOURNAL OF PLANT AND ENVIRONMENT
Rhizobium microbial bacteria functioning that living a symbiosis relationship soil and leguminous plant root fixation of nitrogen to be utilized by plant superior performance during grain development stage. They can enter into symbiosis with leguminous plant, by infecting their root nodules. The legume crops are the bigger partner, often referred to as macro-symbiotic. Usually certain strains form nodule on the limited legume plants. Such a collection of strain is called cross inoculation group. Legume crops show a decrease in the nitrogenase activities observed in soil, the higher doses of nitrogen reduce nitrogen fixation on one hand and increase cost of production on the other. Rhizobium inoculation encourage both nutrient such as Mo and Fe nutrient increasing N-fixation capacity in soil with the effective agronomic practice directly plant root nodulation, nitrogen fixation, vegetative germination, maturity and yield of black gram. It is use of Rhizobium and phosphate solubilisin...
Influence of common bean genotypes and rhizobia interaction for nodulation and nitrogen fixation
Revista de Ciências Agroveterinárias, 2022
Bacteria from the rhizobia group are able to associate symbiotically with bean crop, forming nodules in the root, in which the biological nitrogen-fixing process occurs. However, the efficiency of this process has been low and it can be attributed to genetic and environmental factors. Thus, the objective of this study was to evaluate the capacity of nodulation of local varieties and commercial common bean cultivars inoculated with a Rhizobium tropici strain used in commercial inoculants and rhizobia isolates from common bean root nodules. The experiment was carried out in a factorial scheme (2x4), in a randomized block design with four replicates. It was tested two local varieties and two commercial cultivars, inoculated with the reference Rhizobium tropici strain CIAT899 and the RBZ14 strain isolated from common bean nodules grown in soils of Southern Brazil, in adapted Leonard-type pots. The CIAT899 strain promoted either higher mass of viable nodules and higher nitrogen accumulat...
Plant and Soil, 2022
Purpose (1) To assess the biological N fixation (BNF) potential of varieties of faba bean (Vicia faba L.) cropped with or without compost in an experimental field-scale rotation with no recent history of legumes, (2) to enumerate soil populations of Rhizobium leguminosarum sv. viciae (Rlv), and to genetically characterize the nodulating Rlv strains, (3) compare BNF with other sites in Britain. Methods BNF was evaluated from 2012 to 2015 using 15 N natural abundance. Treatments were either PK fertilizer or compost. Soil rhizobial populations were determined using qPCR, the symbiotic rhizobia genotyped (16 S rRNA, nodA and nodD genes), and their BNF capacity assessed ex situ. The reliance of legumes on BNF at other British sites was estimated in a single season, and their nodulating symbionts examined. Results Faba bean obtained most of its N through BNF (>80%) regardless of variety or year. N-accumulation by cvs Babylon and Boxer increased with compost treatment in 2014/2015. Rhiz...
2013
Nitrogen deficiency is a major factor limiting bean production in Africa. This problem can be alleviated by the use of nitrogen fertilizers which on the other hand adversely affect the environment. The problem can also be alleviated by the use of environmental friendly biological nitrogen fixation technology. In this study, growth experiments were designed to investigate biological nitrogen fixation in three determinate (bush) beans namely Ayenew, GLP 24, and Ecab 0807. Greenhouse and field studies were carried out to determine the most efficient bean cultivar and rhizobia strain in nitrogen fixation. Each bean cultivar was inoculated with the rhizobia strains CIAT 899, USDA 2674, USDA 2676, the three rhizobia strains combined and one was not inoculated. Results from greenhouse studies showed significant statistical differences in nodulation within the bean cultivars. The bush bean cultivar GLP24 was poorly nodulated (40.0 nodules on average) as compared to Ayenew (52.0 nodules on a...
LEGUME RESEARCH - AN INTERNATIONAL JOURNAL, 2020
A field experiment was carried out during summer season in 2018 at New Delhi to study the effect of crop establishment practices and microbial inoculation on nodulation of summer green gram [Vigna radiata (L.) Wilczek] and soil quality parameters. The experiment was laid out in split plot design and treatments were replicated thrice. The experiment included nine treatment combinations including three crop establishment practices viz., conventional tillage, zero tillage and zero tillage with chick pea residue @ 2.5 t/ha in main plots and three microbial inoculation treatment viz., control (no inoculation), dual inoculation of Rhizobium + PSB and combined inoculation of Rhizobium+ Phosphate Solubilizing Bacteria (PSB) + Arbuscular Mycorrhizal (AM) Fungi in sub-plots. Results showed that zero tillage with residue produced significantly higher no. of root nodules/plant and root nodule weight/ plant at 25, 35 and 45 DAS. The same treatment showed significantly superior soil chemical para...
Acta Scientiarum. Agronomy, 2021
The initial development of common bean plants (Phaseolus vulgaris L.) relying on symbiotic nitrogen (N) can be limited by delayed active N2 fixation, requiring supplemental N which in turn may inhibit the symbiosis. Five experiments were carried out in hydroponics to identify the initiation of nodulation and nitrogenase activity in common bean cultivars, and the effects of additions of mineral N on plant nodulation and growth. Three experiments evaluated the initial growth of five inoculated bean cultivars in the absence or presence of mineral N, and two experiments evaluated the effect of the moment of mineral N addition until the beginning of reproductive stage. The first root nodules appeared 10 days after plant transplant (DAT) and nitrogenase activity initiated 11 DAT. Cultivars of large seeds had lower initial nodulation and nitrogenase activity than those of small seeds. Inoculated plants showed limited shoot growth that lasted until 21-25 DAT as compared to inoculated plants...