Boron in soil: The impacts on the biomass, composition and activity of the soil microbial community

Vera, Alfonso; Moreno, J.L.; Garcı́a, Carlos; Morais, Daniel; Bastida, Felipe

doi:10.1016/j.scitotenv.2019.05.375

Cited by 58 publications

(31 citation statements)

References 57 publications

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“…Application of 0.5 mg kg −1 of Mo increased nitrogenase enzyme activity (71%) and root nodule number (63%; Alam et al 2015 ), while application of moderate Zn (15 kg Zn ha −1 ) increased nodule indices of cowpea by at least 38% (Upadhyay and Singh 2016 ). At high concentrations, for example, of boron (application of 9 kg B ha −1 ), the microbial growth and enzyme activities decrease due to impaired functions of cell membrane, and soil microbial structure is altered (Nable et al 1997 ; Nelson and Mele 2007 ; Bilen et al 2011 ; Vera et al 2019 ). Similarly, high amounts of zinc decrease microbial biomass (by 41%; Chander and Brookes 1993 ) and reduce microbial species richness (by 38.5%; Moffett et al 2003 ).…”

Section: Resultsmentioning

confidence: 99%

Micronutrient deficiencies in African soils and the human nutritional nexus: opportunities with staple crops

Kihara

Bolo

Kinyua

et al. 2020

Environ Geochem Health

130

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A synthesis of available agronomic datasets and peer-reviewed scientific literature was conducted to: (1) assess the status of micronutrients in sub-Saharan Africa (SSA) arable soils, (2) improve the understanding of the relations between soil quality/management and crop nutritional quality and (3) evaluate the potential profitability of application of secondary and micronutrients to key food crops in SSA, namely maize (Zea mays L.), beans (Phaseolus spp. and Vicia faba L.), wheat (Triticum aestivum L.) and rice (Oryza sativa L.). We found that there is evidence of widespread but varying micronutrient deficiencies in SSA arable soils and that simultaneous deficiencies of multiple elements (co-occurrence) are prevalent. Zinc (Zn) predominates the list of micronutrients that are deficient in SSA arable soils. Boron (B), iron (Fe), molybdenum (Mo) and copper (Cu) deficiencies are also common. Micronutrient fertilization/ agronomic biofortification increases micronutrient concentrations in edible plant organs, and it was profitable to apply fertilizers containing micronutrient elements in 60-80% of the cases. However, both the plant nutritional quality and profit had large variations. Possible causes of this variation may be differences in crop species and cultivars, fertilizer type and application methods, climate and initial soil conditions, and soil chemistry effects on nutrient availability for crop uptake. Therefore, micronutrient use efficiency can be improved by adapting the rates and types of fertilizers to site-specific soil and management conditions. To make region-wide nutritional changes using agronomic biofortification, major policy interventions are needed.

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Section: Resultsmentioning

confidence: 99%

Micronutrient deficiencies in African soils and the human nutritional nexus: opportunities with staple crops

Kihara

Bolo

Kinyua

et al. 2020

Environ Geochem Health

130

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“…However, prolonged irrigation with such water may have a detrimental effect on soil. The threshold for boron in irrigation water that does not harm soil sustainability is 1 mg•L −1 [126].…”

Section: Sources Of Boronmentioning

confidence: 99%

Boron Toxicity and Deficiency in Agricultural Plants

Brdar-Jokanović

2020

IJMS

281

119

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Boron is an essential plant micronutrient taken up via the roots mostly in the form of boric acid. Its important role in plant metabolism involves the stabilization of molecules with cis-diol groups. The element is involved in the cell wall and membrane structure and functioning; therefore, it participates in numerous ion, metabolite, and hormone transport reactions. Boron has an extremely narrow range between deficiency and toxicity, and inadequate boron supply exhibits a detrimental effect on the yield of agricultural plants. The deficiency problem can be solved by fertilization, whereas soil boron toxicity can be ameliorated using various procedures; however, these approaches are costly and time-consuming, and they often show temporary effects. Plant species, as well as the genotypes within the species, dramatically differ in terms of boron requirements; thus, the available soil boron which is deficient for one crop may exhibit toxic effects on another. The widely documented intraspecies genetic variability regarding boron utilization efficiency and toxicity tolerance, together with the knowledge of the physiology and genetics of boron, should result in the development of efficient and tolerant varieties that may represent a long-term sustainable solution for the problem of inadequate or excess boron supply.

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“…Figure 2(b) represents the basic technologies available for boron removal Fig. 1 Various sources of boron contamination in water [16,17,[20][21][22][23][24][25] Fig. 2 (a) Distribution diagram of boric acid and borate ions in solution at various pH values.…”

Section: Boron Chemistry In Watermentioning

confidence: 99%

An updated review on boron removal from water through adsorption processes

et al. 2021

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Boron is an essential micronutrient that has raised much interest, given the narrow balance between its necessity and toxicity. Both natural and anthropogenic emissions of boron into water sources can eventually deteriorate water quality and endanger the ecosystem. In this review, we first present a general outline of the importance of boron, boron chemistry in water, boron contamination, and its consequences followed by the recent progress in boron removal methods based on adsorption. The adsorbents for deboronation can generally be classified based on the functional groups present; chelating groups, metal oxides, and layered double hydroxides. To comprehensively address these adsorption methods, a detailed discussion on the reaction mechanism of each system is done followed by a summary of the progress in the field during the past 5 years. Finally, some characterization techniques used in deboronation studies and suggestions for future research and applications together with possible improvements to the existing systems are presented. Graphical abstract

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Boron in soil: The impacts on the biomass, composition and activity of the soil microbial community

Cited by 58 publications

References 57 publications

Micronutrient deficiencies in African soils and the human nutritional nexus: opportunities with staple crops

Micronutrient deficiencies in African soils and the human nutritional nexus: opportunities with staple crops

Boron Toxicity and Deficiency in Agricultural Plants

An updated review on boron removal from water through adsorption processes

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