Effect of Biological Seed Coating on Pigeonpea Seedling Vigour

Jagadeesh, V.; Patta, Sujatha; Triveni, S.; Keshavulu, K.; Rani, Kavita; Raghavendra, K. S.

doi:10.20546/ijcmas.2017.608.107

Cited by 5 publications

(2 citation statements)

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“…In particular, it should not be toxic to biofertilizer strain/seed/seedlings during germination [22]. Coating bioinoculants over the seed surface using a binding agent improves the adherence of bioinoculant to the seed, assuring dust-free handling [23].…”

Section: Coatingmentioning

confidence: 99%

Assessment of Shelf-life and Efficacy of the Seed-Coating Delivery System of Biofertilizers in Maize

Priyadharshini

Gnanachitra

Balachandar

et al. 2022

IJPSS

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Film-coating of seeds is a widely accepted technology in agriculture for effectively protecting germinating seeds and seedlings against biotic and abiotic stresses and successfully delivering agro-chemicals, biomolecules, and bio-inoculants to the rhizosphere region. The present experiments explored the possibility of using hydroxypropyl methylcellulose (HPMC) and dextrin as film-coating agents for impregnating maize seed with four different biofertilizer strains. Azospirillum brasilense (Sp7), Bacillus megaterium var phosphaticum (Pb1), Paenibacillus mucilaginosus (KRB9), and Pseudomonas chlororaphis (ZSB15) were prepared as consortium containing an equimolar ratio of each strain. The in vitro growth experiment revealed that HPMC, dextrin, or a combination of both did not affect the growth of all four biofertilizers. When biofertilizer consortium was film-coated on maize seed using HPMC and dextrin as film-coating /binding and protecting agents, no apparent changes were observed in the size, shape, weight, and volume of maize seeds. The shelf-life study on film-coated maize seeds revealed that the microbial inoculants accounted for a one-log reduction (from 104 cells at initial to 103 cells after 3 months) when stored at low temperature. The pre-coated seeds with microbial-inoculants showed significant improvement in seedling growth. Hence, the film-coating of maize seed with microbial inoculants using HPMC and dextrin could be an effective delivery system for ensuring rhizosphere colonization of biofertilizers for sustainable maize cultivation.

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Section: Coatingmentioning

confidence: 99%

Assessment of Shelf-life and Efficacy of the Seed-Coating Delivery System of Biofertilizers in Maize

Priyadharshini

Gnanachitra

Balachandar

et al. 2022

IJPSS

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“…Trichoderma-based bioproducts, such as biofungicides or biofertilizers, are largely used worldwide (EGAMBERDIEVA et al, 2017), and it has been reported that Trichoderma are effective in alleviating the adverse effects of salt stress (RUBIO et al, 2017). There are some reports on the benefits of the association between rhizobia and Trichoderma in some important legume crops (BABU et al 2015;ALCÁNTARA et al 2016;MWEETWA et al 2016;CHAGAS et al 2017;JAGADEESH et al 2017); however, the exact mechanism by which these microorganisms contribute to alleviating the detrimental effects of salt stress is not fully understood.…”

Section: Introductionmentioning

confidence: 99%

COINOCULATION WITH Bradyrhizobium AND Trichoderma ALLEVIATES THE EFFECTS OF SALT STRESS IN COWPEA

et al. 2019

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The deleterious effects of salt stress can be mitigated by the use of beneficial microorganisms. The aims of this study were to evaluate whether coinoculation with Bradyrhizobium and Trichoderma asperelloides alleviates salt stress in cowpea. The experiment was conducted in a greenhouse using pots filled with sterile soil. Seeds were sown and inoculated with Bradyrhizobium or coinoculated with Bradyrhizobium and T. asperelloides. At 15 days after sowing (DAS), the nitrogen-free nutritive solution was supplemented with 50 or 100 mmol L -1 sodium chloride (NaCl) to induce salinity. Uninoculated plants and irrigated with solution without NaCl were used as absolute control. At 35 DAS, plants were collected and nodules were excised for use in the determinations. The absolute controls did not show root nodules. Salt stress decreased plant biomass and growth, especially in cowpea inoculated with Bradyrhizobium. The stem diameter increased in cowpea coinoculated with Bradyrhizobium and T. asperelloides, mainly in plants subjected to salt stress at 100 mmol L -1 NaCl. Cowpea coinoculated with Bradyrhizobium and T. asperelloides maintained a higher content of free ammonia and organic compounds in its nodules even under salt stress. We concluded that the coinoculation of cowpea with Bradyrhizobium and T. asperelloides induces an increase in the concentration of organic solutes in the root nodules, especially when cowpeas are cultivated under salinity. Therefore, the use of coinoculation with Bradyrhizobium and T. asperelloides alleviates the negative effects of salt stress in cowpea. COINOCULAÇÃO COMBradyrhizobium E Trichoderma ALIVIA OS EFEITOS DO ESTRESSE SALINO EM FEIJÃO-CAUPI RESUMO -Os efeitos deletérios do estresse salino podem ser mitigados pelo uso de microrganismos benéficos. O objetivo foi avaliar se a inoculação com Bradyrhizobium e Trichoderma asperelloides alivia o estresse salino em feijão-caupi. O experimento foi conduzido em casa de vegetação utilizando vasos preenchidos com solo estéril. As sementes foram semeadas e inoculadas com Bradyrhizobium ou coinoculadas com Bradyrhizobium e T. asperelloides. Aos 15 dias após a semeadura (DAS), a solução nutritiva isenta de nitrogênio foi suplementada com 50 ou 100 mmol L -1 de cloreto de sódio (NaCl) para induzir a salinidade. Plantas não inoculadas e irrigadas com solução sem NaCl foram utilizadas como controle absoluto. Aos 35 DAS, as plantas foram coletadas e os nódulos excisados para uso nas determinações. O controle absoluto não apresentou nódulos radiculares. O estresse salino diminuiu a biomassa e o crescimento das plantas, especialmente no feijão-caupi inoculado com Bradyrhizobium. O diâmetro do caule aumentou no feijão-caupi coinoculado com Bradyrhizobium e T. asperelloides, principalmente nas plantas submetidas a estresse salino com 100 mmol L -1 de NaCl. O feijão-caupi coinoculado com Bradyrhizobium e T. asperelloides manteve um conteúdo mais alto de amônia livre e compostos orgânicos em seus nódulos, mesmo sob estresse salino. Nós concluímos que a coinoc...

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Trichoderma and bradyrhizobia act synergistically and enhance the growth rate, biomass and photosynthetic pigments of cowpea (Vigna unguiculata) grown in controlled conditions

et al. 2020

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Effect of Biological Seed Coating on Pigeonpea Seedling Vigour

Cited by 5 publications

References 1 publication

Assessment of Shelf-life and Efficacy of the Seed-Coating Delivery System of Biofertilizers in Maize

Assessment of Shelf-life and Efficacy of the Seed-Coating Delivery System of Biofertilizers in Maize

COINOCULATION WITH Bradyrhizobium AND Trichoderma ALLEVIATES THE EFFECTS OF SALT STRESS IN COWPEA

Trichoderma and bradyrhizobia act synergistically and enhance the growth rate, biomass and photosynthetic pigments of cowpea (Vigna unguiculata) grown in controlled conditions

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