Efficacy of Biostimulants Formulated With Pseudomonas putida and Clay, Peat, Clay-Peat Binders on Maize Productivity in a Farming Environment in Southern Benin

Agbodjato, Nadège A.; Adoko, Marcel Yévèdo; Babalola, Olubukola Oluranti; Amogou, Olaréwadjou; Bade, Farid; Noumavo, Pacôme A.; Adjanohoun, Adolphe; Baba-Moussa, Lamine

doi:10.3389/fsufs.2021.666718

Cited by 16 publications

(20 citation statements)

References 54 publications

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“…This crop is generally considered sensitive to salt stress because if grown in saline soils or irrigated with inappropriate water, it can show alterations in some physiological and biochemical parameters, germination, and biomass production [20]. Several studies focused on the effect of biostimulants on maize grown under normal conditions, highlighting the effectiveness of the various materials tested on the crop productivity, quality, and yield [21][22][23][24]. Differently, less attention has been paid to the use of biostimulants to increase maize resistance to salinity, even though it has been recently demonstrated that biostimulants can help this crop in contrasting the deleterious effects of salt stress [25,26].…”

Section: Introductionmentioning

confidence: 99%

Use of a Biostimulant to Mitigate Salt Stress in Maize Plants

D’Amato

Buono

2021

Agronomy

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Salinity is considered among the abiotic stresses most impacting agriculture for its ability to interfere with crop development and quality. For this reason, practices and innovations that could contain the deleterious effects of such stress are of pivotal importance for maintaining acceptable crop yields. In this context, this work has concerned the study of severe salt stress (100 mM NaCl) on maize seedlings and the effects of a plant biostimulant (Megafol–Meg) in helping plants to cope with this adversity. Biomass production, pigments, the content Na+ and K+, the accumulation of hydrogen peroxide (H2O2) and lipid peroxidation products (MDA), total phenolic compounds (TPC), 2,2-diphenyl-1-picrylhydrazyl (DPPH), ferric reducing antioxidant power (FRAP), and 2,2-azinobis (3-ethyl-benzothiazoline-6-sulfonic acid) (ABTS) were investigated in control samples, in samples treated with NaCl alone, and in samples treated with NaCl in combination with the biostimulant. The results showed that the biostimulant significantly mitigated the impact of the salt stress on shoot length and fresh weight, on chlorophyll and carotenoid contents, and reduced the amount of Na+ taken up by the species. Regarding the oxidative status, the biostimulated samples revealed lower amounts of H2O2 and MDA, while maize seedlings grown with NaCl alone exhibited the highest increases in the TPC, ABTS, and FRAP. The explanation for these effects is provided by highlighting the effectiveness of the biostimulant in avoiding Na+ accumulation, which resulted in a lower content of H2O2, MDA, TPC, and antioxidant activity.

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Section: Introductionmentioning

confidence: 99%

Use of a Biostimulant to Mitigate Salt Stress in Maize Plants

D’Amato

Buono

2021

Agronomy

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“…The results of this study showed that Bacillus inoculation, even in the absence of mineral fertilization, increased phosphorus concentrations in plant roots and shoots compared to fertilized plants. Agbodjato et al (2021) assessed the efficacy of solid biostimulants formulated from the rhizobacteria Pseudomonas FIGURE 5 | Heatmap with cluster analysis. The column corresponds to inoculation concentrations and mineral fertilization doses and the line to the biometric parameters of the maize plant.…”

Section: Discussionmentioning

confidence: 99%

“… Agbodjato et al (2021) assessed the efficacy of solid biostimulants formulated from the rhizobacteria Pseudomonas putida and different binders on maize cultivation in the farming environment. The results obtained show that the best height, stem diameter, and leaf area were obtained by applying biostimulants based on P. putida and half doses of NPK and urea.…”

Section: Discussionmentioning

confidence: 99%

Effects of Chemical Fertilization and Microbial Inoculum on Bacillus subtilis Colonization in Soybean and Maize Plants

Bueno

Santos

Buzo³

et al. 2022

Front. Microbiol.

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Plant growth-promoting endophytic microorganisms in agriculture have been expanding in Brazil and are an excellent strategy to face the challenges of current agriculture, such as reducing production costs with fewer environmental impacts, without detriment to productivity. However, little is known about the factors that can affect the colonization of endophytic such as inoculant concentration and mineral fertilization. The present study aimed to evaluate the influence of these factors on soybean and maize crops and found that for soybean crops, the highest Bacillus subtilis concentration of 1 × 104 and 1 × 1010 CFU ml−1 promoted the highest number of recovered bacteria, when there was no mineral fertilization. However, mineral fertilization limited the number of recovered bacteria, suggesting that mineral fertilization interferes with endophytic colonization. For maize crops, the highest number of recovered bacteria occurred from the concentration of 1 × 106 CFU ml−1, not differing from the highest concentrations. A mineral fertilization dose of 25% promoted the greatest B. subtilis recovery compared to the other treatments. Regarding plant development, the highest microbial inoculum concentrations did not necessarily promote greater positive growth promotion effects compared to the concentration of 1 × 104 CFU ml−1 for both crops. The results also suggest that the higher number of endophytic bacteria recovered in the plant does not necessarily affect plant growth in the same proportion. For soybean plants, there is a strong tendency that with the increase in the B. subtilis inoculant concentration, the need for mineral fertilization doses to achieve the same plant development is consequently increased, and inoculations with 1 × 105 and 1 × 106 CFU ml−1 with fertilization doses between 44% and 62% are the ideal combinations for greater plant development. In maize plants, the best growth promotion response (height) was obtained using inoculation concentration of 1 × 102 and 1 × 1010 CFU ml−1, increasing according to the increase in fertilization doses. The findings suggest, for soybean crop, that these high inoculum concentrations required more photosynthetic metabolites from the plants and more nutrients from the soil. Thus, the need for mineral fertilization for plant growth must be increased.

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“…Notulae Botanicae Horti Cluj-Napoca Agrobotanici 2 causes pollution due to the use of synthetic products, loss of soil fertility and a decrease in biodiversity, the negative impacts of this activity are now resulting in an irreversible change for the environment (Olivares et al, 2017). New production technologies are needed to reduce the damage caused to our ecosystems and at the same time they are required to be friendly to the environment, these alternatives include the use of biostimulants in agriculture (Agbodjato et al, 2021).…”

Section: Academicpresmentioning

confidence: 99%

Humic substances and rhizobacteria enhance the yield, physiology and quality of strawberries

CRUZ

González‐Fuentes

Robledo‐Olivo

et al. 2022

Not Bot Horti Agrobo

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The strawberry fruit (Fragaria × ananassa Duch.) is appreciated for its aroma, color, texture and nutritional value. In conventional agriculture, the use of fertilizers damages the environment since it causes loss of soil fertility, salinity and its erosion, hence production alternatives, without harming the environment, are sought. The objective of this study was to evaluate the effect of a biostimulant based on humic substances and rhizobacteria, on the production and quality of the strawberry cultivar ‘San Andreas’. Strawberry plants cultivar ‘San Andreas’ were treated with fulvic acids + mixture of microorganisms, humic acids + Pseudomonas fluorescens, fulvic acids + Azospirillum brasilense, fulvic acids + Pseudomonas fluorescens and the mixture AH and AF + Azospirillum brasilense with two doses (d1, d2) in total 10 treatments were applied plus the control. Humic substances were applied every 15 days and rhizobacteria every 30 days. The results showed that the AFyAzoz d1 increased over control plants, the number of leaves in 38.3%, root volume in 42.6%, the fresh weight in 130% and dry weight in 63.8%, the number of fruits 50.0% and the yield in 59.5%. The AFyPF d1 favored Photosynthesis in 127.3%; AFyPF d1 increased TSS in 25%, AFyPF d2 vitamin C in 17.1% and MHyF + Azoz d1 increased in 20% the content of Phenols. Humic substances plus rhizobacteria are an ecological alternative to be used as biostimulant in the production and quality of strawberry plants.

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Efficacy of Biostimulants Formulated With Pseudomonas putida and Clay, Peat, Clay-Peat Binders on Maize Productivity in a Farming Environment in Southern Benin

Cited by 16 publications

References 54 publications

Use of a Biostimulant to Mitigate Salt Stress in Maize Plants

Use of a Biostimulant to Mitigate Salt Stress in Maize Plants

Effects of Chemical Fertilization and Microbial Inoculum on Bacillus subtilis Colonization in Soybean and Maize Plants

Humic substances and rhizobacteria enhance the yield, physiology and quality of strawberries

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