Deleterious Rhizobacteria As A Potential Bioherbicide-A Review

Phukan, Jimni; Deka, J.; Kurmi, K.; Kalita, Surajit

doi:10.14445/23942568/ijaes-v8i2p101

Cited by 2 publications

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“…Although PGPR can have a positive effect and promote plant growth through the production of growth hormones and pathogen suppression, it can also have a negative effect on plant growth. Indeed, when excess growth hormones are produced, plant growth is suppressed and the PGPRs are considered to be deleterious rhizobacteria (DRB) and therefore yield reducing bacteria (Phukan et al, 2021). These types of bacteria also negatively affect plant growth and yield through the production of phytotoxic substances (Kennedy, 2019).…”

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confidence: 99%

Growth promotion and yield attribute improvement of five groundnut (Arachis hypogaea L.) varieties by the application of plant growth promoting rhizobacteria

Godar,

Béatrice,

Maimouna

et al. 2023

Afr. J. Agric. Res.

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The aim of this investigation was to evaluate the symbiotic performance of a collection of ten plant growth-promoting rhizobacteria (PGPR) strains on the growth and yield attributes of five groundnut varieties. The screening was conducted in the greenhouse using seeds of the varieties Essamay, Amoul Morom, 55-437, Fleur 11 and Sunu Gaal grown in 1.5 kg pots with Sangalkam soils. Leaf chlorophyll content, plant height, number of branches, biomass production, number and mass of pods were the parameters evaluated in response to groundnut inoculation. Overall, the results highlighted the effectiveness of inoculation with certain PGPRs on the growth and yield parameters. However, the effects of the inoculants were highly dependent on the variety used and the parameter studied. In particular, the strains RF8, SI12, SR6, SI16, SI27 and SS10 were the most efficient in improving the plant growth and yield attributes of the varieties Essamay, Amoul Morom and Sunu Gaal. In contrast, Fleur 11 and 55-437 were less responsive in terms of yield attributes, demonstrating that the response to groundnut inoculation is variety dependent. In addition, a significant increase in the estimated leaf chlorophyll content was only observed in Fleur 11 and Sunu Gaal, which was not expected and could be attributed to a lower N 2 fixation capacity of the indigenous rhizobia. Nevertheless, the increases in growth and yield parameters obtained in this study can be considered as a promising data for the use of bacterial biofertilisers in groundnut cultivation.

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Section: Discussionmentioning

confidence: 99%

Growth promotion and yield attribute improvement of five groundnut (Arachis hypogaea L.) varieties by the application of plant growth promoting rhizobacteria

Godar,

Béatrice,

Maimouna

et al. 2023

Afr. J. Agric. Res.

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The Problem of Weed Infestation of Agricultural Plantations vs. the Assumptions of the European Biodiversity Strategy

et al. 2022

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Meeting the nutritional needs of a dynamically developing global society is a major challenge. Despite the modernisation of agriculture, huge losses in the quality and quantity of crops occur each year, mainly due to weed species, which are the most important biotic limitation to agricultural production. Globally, approximately 1800 weed species cause a 31.5% reduction in plant production, which translates to USD 32 billion per year in economic losses. However, when the same herbicides are frequently applied, plants develop segetal immune mechanisms. There are currently around 380 herbicide-resistant weed biotypes worldwide. Due to the negative influence of herbicides on ecosystems and the legal regulations that limit the use of chemical crop protection products, it is necessary to develop a new method of weed control. Bioherbicides, based on living organisms or their secondary metabolites, seem to be an ideal solution. The biocontrol market is worth around EUR 550 million in Europe and EUR 1.6 billion worldwide, with an estimated 15% growth expected by 2025. Despite numerous studies that have demonstrated the effectiveness of microbial bioherbicides, only 25 mould-based bioherbicides are currently available to growers. Due to the high specificity and selectivity of biological crop protection products, as well as their low production costs and non-toxicity to the environment and human health, they would appear to be a safe alternative to chemical pesticides.

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Deleterious Rhizobacteria As A Potential Bioherbicide-A Review

Cited by 2 publications

References 0 publications

Growth promotion and yield attribute improvement of five groundnut (Arachis hypogaea L.) varieties by the application of plant growth promoting rhizobacteria

Growth promotion and yield attribute improvement of five groundnut (Arachis hypogaea L.) varieties by the application of plant growth promoting rhizobacteria

The Problem of Weed Infestation of Agricultural Plantations vs. the Assumptions of the European Biodiversity Strategy

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