Zinc deficiency in wheat and lupins in Western Australia is affected by the source of phosphate fertiliser

Riley, M M; Gartrell, J. W.; Brennan, R. F.; Hamblin, John; Coates, P. L.

doi:10.1071/ea9920455

Cited by 19 publications

(3 citation statements)

References 8 publications

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“…The critical level of Zn in wheat grain was reported to be 10 mg Zn kg -~ (Riley et al, 1992). In the present study grain from severely Zn deficient plants had Zn concentration of 12 mg kg -l ( Table 2) while grains of healthy, highyielding plants fertilised with 0.2 mg Zn kg -~ soil had grain Zn concentration of 13 mg kg-1 (Table 2) casting doubts on usefulness of any critical value of Zn in wheat grains.…”

Section: Discussionmentioning

confidence: 65%

Importance of seed Zn content for wheat growth on Zn-deficient soil

1995

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Two wheat (Triticum aestivum L.) genotypes (Zn-efficient Excalibur and Zn-inefficient Gatcher) were grown from low-Zn (around 250 ng Zn/seed) and high-Zn seed (around 700 ng Zn/seed) in a Zn-deficient siliceous sand fertilised with 0, 0.05, 0.2, 0.8 or 3.2 mg Zn kg -1 soil. At maturity, plants derived from the high-Zn seed had bigger grains and produced more grains than plants grown from the low-Zn seed when fertilised with nil Zn. Plants grown from high-Zn seed produced more grain dry matter per unit of Zn absorbed by the above-ground parts, transported a larger proportion of absorbed Zn to the grain, and approached the maximum harvest index with the fertilisation rate of 0.05 mg Zn kg-l compared to 0.2 mg Zn kg-1 soil required for plants derived from the low-Zn seed. The Zn-efficient cv. Excalibuir had greater fertiliser efficiency when fertilised with 0.05 mg Zn kg-1 soil and a greater harvest index at nil Zn treatment compared to the Zn-inefficient cv. Gatcher. Zn-deficient plants produced seed with higher concentrations of all inorganic nutrients determined except Zn. There was a positive relationship between grain dry weight and Zn concentrations in youngest expanded blades sampled at 6 weeks of growth. It is concluded that crops grown from seed containing higher Zn content have a distinct advantage which culminates in greater yield when grown in soils of low Zn status.

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Section: Discussionmentioning

confidence: 65%

Importance of seed Zn content for wheat growth on Zn-deficient soil

1995

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“…Enrichment of Zn in surface soils of the Study Area, compared to subsurface soils (mean normalised EF of 2.7) was likely due to added diffuse contamination from atmospheric deposition, application of fertilisers, including as an impurity of super-phosphate (Riley et al, 1992) and nutrient cycling by vegetation (Blaser et al, 2000, Reimann 2011). As sample sites were deliberately located greater than 25 m from roads and greater than 200 m from highways, it is unlikely that Zn enrichment was associated with run off from roads, which has been reported to be the most common source of Zn contamination in urban surface soils (Birch et al, 2011).…”

Section: Zincmentioning

confidence: 99%

Assessment of ambient background concentrations of elements in soil using combined survey and open-source data

Mikkonen

Clarke

Dasika³

et al. 2017

Science of The Total Environment

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Understanding ambient background concentrations in soil, at a local scale, is an essential part of environmental risk assessment. Where high resolution geochemical soil surveys have not been undertaken, soil data from alternative sources, such as environmental site assessment reports, can be used to support an understanding of ambient background conditions. Concentrations of metals/metalloids (As, Mn, Ni, Pb and Zn) were extracted from open-source environmental site assessment reports, for soils derived from the Newer Volcanics basalt, of Melbourne, Victoria, Australia. A manual screening method was applied to remove samples that were indicated to be contaminated by point sources and hence not representative of ambient background conditions. The manual screening approach was validated by comparison to data from a targeted background soil survey. Statistical methods for exclusion of contaminated samples from background soil datasets were compared to the manual screening method. The statistical methods tested included the Median plus Two Median Absolute Deviations, the upper whisker of a normal and log transformed Tukey boxplot, the point of inflection on a cumulative frequency plot and the 95th percentile. We have demonstrated that where anomalous sample results cannot be screened using site information, the Median plus Two Median Absolute Deviations is a conservative method for derivation of ambient background upper concentration limits (i.e. expected maximums). The upper whisker of a boxplot and the point of inflection on a cumulative frequency plot, were also considered adequate methods for deriving ambient background upper concentration limits, where the percentage of contaminated samples is <25%. Median ambient background concentrations of metals/metalloids in the Newer Volcanic soils of Melbourne were comparable to ambient background concentrations in Europe and the United States, except for Ni, which was naturally enriched in the basalt-derived soils of Melbourne.

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“…In a more extensive region of podzolised sands in the upper south-east of SA (known originally as the "90 mile desert", although Donald and Prescott (1975) preferred the less derogatory term "90 mile plain"), extending into western Victoria (a total area of 26,000 km 2 - Reuter et al, 1988) applications of Cu, Zn and superphosphate had resulted in spectacular increases in pasture growth and crop yields by 1942 (Riceman and Anderson, 1943). The first report of wheat yield responses to the application of Zn in WA occurred on calcareous sandy soils in 1940-1941(Riley et al, 1992. Millikan (1938) reported large responses to the application of Zn sulphate (ZnSO 4 ) (with superphosphate) at sowing in wheat afflicted with cereal root eelworm disease (H. schachtii (sic) ) (now Heterodera avenae) in western Victoria.…”

Section: Early Micronutrient Research In Australiamentioning

confidence: 99%

Micronutrient Deficiencies in Global Crop Production

Alloway¹

2008

219

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Zinc deficiency in wheat and lupins in Western Australia is affected by the source of phosphate fertiliser

Cited by 19 publications

References 8 publications

Importance of seed Zn content for wheat growth on Zn-deficient soil

Importance of seed Zn content for wheat growth on Zn-deficient soil

Assessment of ambient background concentrations of elements in soil using combined survey and open-source data

Micronutrient Deficiencies in Global Crop Production

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