Trends and Annual Variations in Cd Concentrations in Grain of Winter Wheat

Andersson, Arne; Bingefors, S.

doi:10.1080/00015128509436506

Cited by 8 publications

(10 citation statements)

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“…There was no difference in grain Cd concentrations in the spring‐planted Reliance cultivar between irrigated and nonirrigated sites, but a significant ( P < 0.001) irrigation effect was found for the autumn‐planted wheat cultivars, with higher grain Cd concentrations in the dryland wheat (0.129 mg kg −1 FW) than irrigated wheat (0.067 mg kg −1 FW) (Table 4). This is opposite to what was reported by Gray et al (2002) and also Andersson and Bingefors (1985), who previously showed Cd concentration in the grain of winter wheat was positively correlated with the amount of precipitation in the growing season. Specifically, there were significantly lower Cd concentrations in drier years.…”

Section: Resultscontrasting

confidence: 99%

Cadmium Concentrations in New Zealand Wheat: Effect of Cultivar Type, Soil Properties, and Crop Management

Gray

Munir

et al. 2019

J of Env Quality

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Wheat (Triticum aestivum L.) grain is a contributing source of dietary Cd in New Zealand, but despite this, there is a dearth of information on Cd concentrations in wheat and the factors that affect uptake. We measured Cd concentrations in 12 wheat cultivars grown in field sites across New Zealand and also assessed the soil, plant, and crop factors that have been reported to affect Cd uptake. We found there was a wide range in grain Cd concentrations (0.004 to 0.205 mg kg−1 fresh weight [FW]). The overall mean concentration (0.066 mg kg−1 FW) was below the maximum limit (ML) of 0.1 mg kg−1 FW. Only 7% of grain samples across seven sites exceeded the ML. There were significant (P < 0.05) differences (2.5‐fold) in Cd concentrations in wheat grain between cultivars. No strong significant relationships were found between soil properties and Cd concentrations in grain. Further, management factors affecting grain Cd concentrations were inconsistent. Given the lack of relationships between soils and management practices, the most effective way of limiting Cd uptake in wheat grain at sites where Cd exceeds MLs may be the use of low‐Cd‐accumulating cultivars. Further studies are required to explore specifically the influence of irrigation and effects of type and rate of fertilizer on Cd uptake in wheat, as well as to better understand the mechanisms of Cd uptake in wheat. Core Ideas There was a 2.5‐fold range in Cd concentrations in grain among cultivars. No relationships were found between soil properties and Cd in grain. Overall Cd concentrations in wheat grain were below maximum limits. Using low‐Cd‐accumulating cultivars may be a strategy to limit uptake in grain.

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Section: Resultscontrasting

confidence: 99%

Cadmium Concentrations in New Zealand Wheat: Effect of Cultivar Type, Soil Properties, and Crop Management

Gray

Munir

et al. 2019

J of Env Quality

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“…On the other hand, there is a great variation in Cd content in grains studied over a prolonged period of time 5. Many confounding factors such as crop yields may be involved (see eg Ref 3), factors that have not been studied in this investigation.…”

Section: Discussionmentioning

confidence: 92%

“…In addition to aerial deposition, the main factor in contamination of soils, and consequently crops, with Cd is through the use of commercial phosphate fertilisers,3, 4 which may contain varying amounts of that metal. There are indications that the Cd level in wheat in Sweden has approximately doubled in some areas during this century,5 which is thought to be due mainly to phosphate fertilising. By using organic (‘natural’) fertilisers with a lower input of Cd into the soil, organically farmed crops are assumed to contain lower levels of Cd as compared with conventional farm products.…”

Section: Introductionmentioning

confidence: 99%

Does organic farming reduce the content of Cd and certain other trace metals in plant foods? A pilot study

Jorhem

Slanina

2000

J. Sci. Food Agric.

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“…Despite this risk, the European Community recently increased the maximum permitted Cd level in wheat grains from 100 to 200 μ g kg −1 (Kommissionens Förordning 2001). The Cd concentration in Swedish‐grown wheat more than doubled between 1918 and 1980 (Andersson and Bingefors 1985), and today the Cd levels in spring bread wheat fluctuate around 100 μ g kg −1 . For medical reasons, Cd levels thus need to be decreased in cereals, particularly in wheat, which is eaten in large quantities.…”

Section: Introductionmentioning

confidence: 99%

Genetic variation in wheat cadmium accumulation on soils with different cadmium concentrations

Stolt¹,

Asp²,

Hultin³

2006

J Agronomy Crop Science

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Cadmium (Cd) accumulation in wheat genotypes of spring bread wheat (Triticum aestivum L.) and spring durum wheat (Triticum turgidum var. durum) was studied in field trials every third week throughout the growing season. The study was carried out in Sweden on three different soils and during two growing seasons. The results showed that the genetic variation in shoot and grain Cd accumulation remained consistent, regardless of soil type or growing season. In addition, it was possible to select the genotype that accumulated most Cd already at the beginning of the growing season, since this genotype also accumulated most Cd in the vegetative tissues of the shoot. These results indicate that it is possible to identify genotypes that accumulate most Cd in the grain at an early plant development stage. High Cd concentrations in the shoot were also observed to give high Cd concentrations in the grain. This indicates that the regulatory mechanism for grain Cd accumulation is not located in the shoot, but in the root or as a feature of root Cd uptake. The soil material and the soil solution at all three sites were analysed for strongly bound Cd (as extracted with 2 m HNO 3 ), more easily plant-available Cd (as extracted with ammonium lactate), pH, organic matter, clay content and conductivity. None of these parameters was clearly correlated to the Cd concentration in the grain.

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Trends and Annual Variations in Cd Concentrations in Grain of Winter Wheat

Cited by 8 publications

References 0 publications

Cadmium Concentrations in New Zealand Wheat: Effect of Cultivar Type, Soil Properties, and Crop Management

Cadmium Concentrations in New Zealand Wheat: Effect of Cultivar Type, Soil Properties, and Crop Management

Does organic farming reduce the content of Cd and certain other trace metals in plant foods? A pilot study

Genetic variation in wheat cadmium accumulation on soils with different cadmium concentrations

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