Prediction of wheat response to an application of phosphorus under field conditions using diffusive gradients in thin-films (DGT) and extraction methods

Mason, Sean; McNeill, Ann; McLaughlin, Michael J.; Zhang, Hao

doi:10.1007/s11104-010-0521-0

Cited by 149 publications

(115 citation statements)

References 40 publications

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“…Davidson et al 2000, Zhang et al 2002, so that one would expect uptake to be determined by physical availability. Recent work on the correlation of P uptake in plants and DGT have mostly been from tropical soils with high P sorption capacity (Mason et al 2010, Six et al 2013, where it can also be expected that physical availability determined uptake. Soils in temperate regions generally have lower sorption capacity than tropical soils, and it can therefore be expected that DGT will have somewhat lower predictive ability in those soils.…”

Section: (22) Discussionmentioning

confidence: 99%

“…A new method based physical diffusion, diffusive gradient in thin films (DGT) was originally developed to measure bioavailability of metals in natural waters (Davidson and Zhang 1994), and has also been developed to measure bioavailability in soil solution , Zhang et al 2001. It has recently also been developed for P bioavailability in soils (Zhang et al 2013) and it appears to predict plant available P better than any other single method (Mason et al 2010, Tandy et al 2011, Six et al 2013.…”

Section: Introductionmentioning

confidence: 99%

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Phosphorus availability in residues as fertilizers in organic agriculture

Føreid

2017

AFSci

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Phosphorus (P) should be recycled from organic wastes as much as possible, and input is needed in stockless organic agriculture. Seven organic residues were assessed and compared them to mineral P fertilizer and rock phosphate as fertilizer for barley. P availability in the mixtures and residual P availability were also assessed by diffusive gradients in thin films (DGT). The best availability was found in digested liquid manure followed by wood ash, fish sludge, composted solid manure and composted food waste. Meat and bone meal, the commercially available product Ladybug plus and rock phosphate had low P availability at the same level as no P. Only wood ash had significant P available for the next crop. The pH level of the soil did not affect P availability for any of the P sources. DGT predicted P availability moderately well, as it measures P supply over a short period without any biological factors.

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Section: (22) Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Phosphorus availability in residues as fertilizers in organic agriculture

Føreid

2017

AFSci

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“…The data for biomass in the HK Kalke experiment were expressed as a function of the available P level (P H2O ) in the pot experiment and the three-parameter exponential rise to maximum (Mitscherlich) curve was fitted to the data [51]:…”

Section: Data Analyses and Statisticsmentioning

confidence: 99%

Effect of bioeffectors and recycled P-fertiliser products on the growth of spring wheat

Lekfeldt

Rex

Mercl

et al. 2016

Chem. Biol. Technol. Agric.

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Background:The recycling of waste products into P fertilisers in agriculture is advisable from the perspective of sustainability. Bioeffectors (BEs), which have the ability to increase the plant uptake of P from recycled fertiliser products, may increase the fertiliser value of these products. This paper investigated the effect of a range of different recycled fertilisers on the growth and P uptake of wheat in pot experiments conducted at three different locations in Europe. Furthermore, investigations were undertaken as to whether the addition of a range of bioeffectors could significantly enhance P availability, P uptake and plant growth.Results: BE additions were found not to significantly increase the aboveground biomass of wheat plants or the uptake of P when plants were fertilised with recycled fertiliser products. This was shown across a range of pot experiments with soils of different P status. Only in the case of the positive control P fertiliser (TSP) was a positive effect of Proradix and RhizoVital on plant growth observed in one of the experiments, while in the same experiment RhizoVital and Biological fertiliser DC had a negative impact on plant biomass when the P fertiliser was Thomas phosphate. With regard to P uptake, there was only a slight positive effect of Proradix in plants not supplied with P fertiliser in this experiment. Clear differences were seen in the efficiency of P fertilisers. Generally, sewage sludge ash performed quite poorly (20-40 % of TSP), while sewage sludge, Thomas phosphate, P-enriched slag and the fibre fraction of pig manure all had a high availability of P (>74 % relative to TSP). Compost composed mainly of garden/park waste and sewage sludge was intermediate in availability (40-70 %). The elemental composition of the harvested wheat plants was significantly affected in all cases by the different P fertilisers added. The BE treatments significantly affected the elemental composition of the aboveground biomass in one of the experiments where the product Proradix had the greatest effect on elemental composition. Conclusions:In conclusion, the experiments revealed a wide difference in the bioavailability of P in the different waste products, but the added microorganisms demonstrated a limited capacity to influence plant P uptake across a range of soils and waste products.

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“…All these factors contribute to explain the poor relationship frequently observed between a widely used index such as Olsen P (bicarbonateextractable P; Olsen et al 1954) and P uptake by plants (Kulhánek et al 2007), even in soils with similar properties (Delgado et al 2010). To overcome this limitation, other methods theoretically sensitive to soil PBC such as the use of near infinite sinks (i.e., Fe oxides, Delgado and Torrent 1997;or resins, Delgado et al 2010) or to the study of diffusive gradients in thin films (DGT; Mason et al 2010;Tandy et al 2011) have been proposed. Also, corrections of traditional indexes based on single soil properties could lead to more accurate assessing of available soil P thus to more accurate P fertilization recommendations (Delgado et al 2010).…”

Section: Introductionmentioning

confidence: 99%

Accuracy of Olsen P to assess plant P uptake in relation to soil properties and P forms

Recena

Torrent

Campillo

et al. 2015

Agron. Sustain. Dev.

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Efficient use of phosphorus (P) by plants in agriculture relies on accurate estimation of the phytoavailable soil P. However, poor relationships are frequently observed between P availability indices, such as Olsen P, and P uptake by plants. We therefore studied which soil properties modify the accuracy of Olsen P as a P availability index. We conducted a soil P depletion experiment in pots with 17 soils. Two samples differing widely in Olsen P were used for each soil and named "low-P" and "high-P." Soil was mixed with siliceous sand to achieve 1 mg of Olsen P per pot, so that the ratio of non-readily available P, either inorganic P or organic P, to Olsen P in the pot was higher for low-P than for high-P samples. Results show that, in high-P samples, P uptake by cucumber is positively correlated with the affinity of the soil solid phase for P, with R 2 of 0.76. In high-P samples, P uptake by cucumber is positively correlated with total P adsorption capacity as estimated by Fe in the form of Fe oxides, with R 2 = 0.56. P uptake is positively correlated with the inorganic P released by NaOH and citrate-bicarbonate in low-P samples, with R 2 of 0.52. In low-P samples, total organic P and phosphatase activity in the rhizosphere explained 37 % of plant P uptake. In low-P samples, phosphatase activity and pH explained 50 % of plant P uptake. These findings reveal that organic P forms and hydrolytic activity by roots are explaining P availability to plants. Whereas physico-chemical processes controlling inorganic P dynamics play a major role for low organic P/Olsen P ratios.

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Prediction of wheat response to an application of phosphorus under field conditions using diffusive gradients in thin-films (DGT) and extraction methods

Cited by 149 publications

References 40 publications

Phosphorus availability in residues as fertilizers in organic agriculture

Phosphorus availability in residues as fertilizers in organic agriculture

Effect of bioeffectors and recycled P-fertiliser products on the growth of spring wheat

Accuracy of Olsen P to assess plant P uptake in relation to soil properties and P forms

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