In recognition of Mike Hedley: fate of fertiliser in soil and mobilisation of recalcitrant nutrients

McDowell, R. W.; Burkitt, LL

doi:10.1007/s10705-022-10243-z

Cited by 2 publications

(1 citation statement)

References 21 publications

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“…Three methods are commonly used for TP O determination. Hedley et al (1992) proposed the sequential P fractionation, widely used in the most diverse studies on P transformations in different soil classes and land uses, both in temperate and tropical ecosystems (Condron and Newman, 2011;McDowell and Burkitt, 2022). Sequential extraction allows for characterizing different P I and P O fractions on a scale of solubility variation based on changes in different pH levels and extracting strength, in decreasing order of soil lability, in which TP O is the sum of fractions extracted in sodium bicarbonate (NaHCO 3 ), sodium hydroxide (NaOH) and NaOH+Sonification (Aleixo et al, 2017;Viana et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Soil organic phosphorus in Eucalyptus plantations, Brazil: extraction methods

Alvarenga,

Costa,

Gama-Rodrigues

et al. 2024

Sci. agric. (Piracicaba, Braz.)

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In-depth knowledge of total soil organic phosphorus (TP O ) as a potential P source for plants allows for a comprehensive understanding of the adoption of an efficient management system of phosphorus fertilization in forest plantations. Thus, we aimed to compare three TP O extraction methods (Hedley; Bowman; Bowman and Moir) in different Eucalyptus plantations on strongly weathered soils. The TP O concentrations obtained by the "Hedley" (mean of 130 mg kg -1 ), and "Bowman and Moir" methods (mean of 131 mg kg -1 ) were similar. The "Bowman" method extracted less than 50 % of the TP O content extracted by the other methods. Both "Hedley" and "Bowman and Moir" methods showed similar TP O extraction efficiency compared to TP determined by acid digestion. However, the "Hedley" method is the most expensive and time-consuming analytical technique. In view of this, the NaOH+Na 2 EDTA extractor (Bowman and Moir) would be the most suitable since, in addition to showing high extraction efficiency, it offers fast analysis execution, low analytical error, and lower cost.

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Section: Introductionmentioning

confidence: 99%

Soil organic phosphorus in Eucalyptus plantations, Brazil: extraction methods

Alvarenga,

Costa,

Gama-Rodrigues

et al. 2024

Sci. agric. (Piracicaba, Braz.)

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Exploring Phosphorus Dynamics in Submerged Soils and Its Implications on the Inconsistent Rice Yield Response to Added Inorganic Phosphorus Fertilisers in Paddy Soils in Sri Lanka

Palihakkara,

Burkitt,

Jeyakumar

et al. 2023

J Soil Sci Plant Nutr

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Rice is the primary energy source of more than half of the global population. Challenges persist in managing phosphorus (P) in paddy soils of tropical rice-growing countries. In Sri Lanka, one specific challenge is the inconsistent yield response observed when inorganic P fertilisers are applied to paddy soils. Previous research conducted in Sri Lanka has shown that the rice yield response to added P fertilisers cannot be adequately explained by factors such as soil available P, irrigation schemes, soil texture, pH, electrical conductivity, total carbon content and available Fe and Mg concentrations. Due to the submerged conditions in which rice is grown for a significant portion of its lifespan, a unique environment controlled by redox-driven processes is developed in paddy soils. Therefore, releasing P from submerged soils is an outcome influenced by complex hydrological and biogeochemical processes, strongly influenced by inherent soil characteristics. The present review paper aimed to critically examine existing literature on soil P behaviour in submerged paddy soils of Sri Lanka, to clarify the behaviour of P under submergence, identify the factors affecting such behaviour and highlight the research gaps that need to be addressed, in order to effectively manage P in the paddy soils of Sri Lanka.

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In recognition of Mike Hedley: fate of fertiliser in soil and mobilisation of recalcitrant nutrients

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Cited by 2 publications

References 21 publications

Soil organic phosphorus in Eucalyptus plantations, Brazil: extraction methods

Soil organic phosphorus in Eucalyptus plantations, Brazil: extraction methods

Exploring Phosphorus Dynamics in Submerged Soils and Its Implications on the Inconsistent Rice Yield Response to Added Inorganic Phosphorus Fertilisers in Paddy Soils in Sri Lanka

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