Carbonaceous soil amendments to biofortify crop plants with zinc

Gartler, Jörg; Robinson, Brett; Burton, Karen; Clucas, Lynne

doi:10.1016/j.scitotenv.2012.10.027

Cited by 78 publications

(45 citation statements)

References 28 publications

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“…Biochar shows promise to sorb xenobiotic organic contaminants (Spokas et al, 2009;Wang et al, 2010;Zhang et al, 2010); inorganic components including NH 3 , N 2 O, NO 3 − , and NH 4 + (Taghizadeh-Toosi et al, 2011;Taghizadeh-Toosi et al, 2012;Paramashivam et al, 2016b); and metals (Uchimiya et al, 2010;Park et al, 2011). Knowles et al (2011) and Gartler et al (2013) demonstrated that biosolids-biochar mixtures resulted in the same or greater biomass production in a range of species compared with adding biosolids alone. This indicates that, although some biochars reduce N leaching from biosolids, they do not reduce N bioavailability to the point where it affects plant growth.…”

Section: Organic Amendmentsmentioning

confidence: 99%

Potential Environmental Benefits from Blending Biosolids with Other Organic Amendments before Application to Land

et al. 2017

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Section: Organic Amendmentsmentioning

confidence: 99%

Potential Environmental Benefits from Blending Biosolids with Other Organic Amendments before Application to Land

et al. 2017

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“…However, it is also understood that genetic variation between cultivars can affect Zn uptake (McLaughlin et al, 1994). An investigation into the effect of biochar amendments on Zn uptake in vegetables by Gartler et al, (2013), only studied one specific cultivar of each vegetable variety; they stated that their results were not applicable to all cultivars of the same crop species used within the study. Correspondingly in this study, only one wheat cultivar was investigated, and differences between cultivars may affect micronutrient uptake.…”

Section: Micronutrient Mobility and Dissolved Organic Carbonmentioning

confidence: 99%

Effects of three different biochars on aggregate stability, organic carbon mobility and micronutrient bioavailability

Hartley

Riby

Waterson

2016

Journal of Environmental Management

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Abstract. Previous studies have demonstrated both beneficial and detrimental effects on soil properties from biochar incorporation. Several biochars, with different feedstock origins, were evaluated for their effectiveness at improving soil quality of a sandy agricultural soil. A pot trial was used to investigate aggregate stability and microbial activity, pore water trace element mobility and micronutrient concentrations in grain of spring wheat after incorporation of three biochars. The feedstocks for biochar production were selected because they were established UK waste products, namely oversize woody material from green waste composting facilities, and rhododendron and soft wood material from forest clearance operations. Biochars were incorporated into the soil at a rate of 5% v/v. Aggregate stability was improved following addition of oversize biochar whilst microbial activity increased in all treatments. Dissolved organic carbon (DOC) concentrations in soil pore water from biochartreated soils were raised, whilst micronutrient concentrations in wheat grain grown in the treated soils were significantly reduced. It was concluded that incorporation of biochar to temperate agricultural soils requires caution as it may result in reductions of essential grain micronutrients required for human health, whilst the effect on aggregate stability may be linked to organic carbon functional groups on biochar surfaces and labile carbon released from the char into the soil system.

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“…This strategy is termed biofortification and can be achieved through the use of Zn fertilisers on plant genotypes that have greater ability to acquire and accumulate Zn in their edible tissues [1,[4][5][6][7][8][9]. Zinc might be applied to the soil as inorganic or organic fertilisers or to foliage as soluble salts [1,7,[9][10][11]. Inorganic fertilisers are often preferred because of their consistent composition; foliar applications are most effective where the phytoavailability of Zn decreases rapidly when applied to the soil [1,5].…”

Section: Introductionmentioning

confidence: 99%

Limits to the Biofortification of Leafy Brassicas with Zinc

et al. 2018

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Many humans lack sufficient zinc (Zn) in their diet for their wellbeing and increasing Zn concentrations in edible produce (biofortification) can mitigate this. Recent efforts have focused on biofortifying staple crops. However, greater Zn concentrations can be achieved in leafy vegetables than in fruits, seeds, or tubers. Brassicas, such as cabbage and broccoli, are widely consumed and might provide an additional means to increase dietary Zn intake. Zinc concentrations in brassicas are limited primarily by Zn phytotoxicity. To assess the limits of Zn biofortification of brassicas, the Zn concentration in a peat:sand (v/v 75:25) medium was manipulated to examine the relationship between shoot Zn concentration and shoot dry weight (DW) and thereby determine the critical shoot Zn concentrations, defined as the shoot Zn concentration at which yield is reduced below 90%. The critical shoot Zn concentration was regarded as the commercial limit to Zn biofortification. Experiments were undertaken over six successive years. A linear relationship between Zn fertiliser application and shoot Zn concentration was observed at low application rates. Critical shoot Zn concentrations ranged from 0.074 to 1.201 mg Zn g −1 DW among cabbage genotypes studied in 2014, and between 0.117 and 1.666 mg Zn g −1 DW among broccoli genotypes studied in 2015-2017. It is concluded that if 5% of the dietary Zn intake of a population is currently delivered through brassicas, then the biofortification of brassicas from 0.057 to > 0.100 mg Zn g −1 DW through the application of Zn fertilisers could increase dietary Zn intake substantially.

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Carbonaceous soil amendments to biofortify crop plants with zinc

Cited by 78 publications

References 28 publications

Potential Environmental Benefits from Blending Biosolids with Other Organic Amendments before Application to Land

Potential Environmental Benefits from Blending Biosolids with Other Organic Amendments before Application to Land

Effects of three different biochars on aggregate stability, organic carbon mobility and micronutrient bioavailability

Limits to the Biofortification of Leafy Brassicas with Zinc

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