Effect of several organic acids on phosphate adsorption by variable charge soils of central China

Hu, Hongqing; He, Jiajie; Li, X.Y; Liu, F

doi:10.1016/s0160-4120(01)00012-5

Cited by 58 publications

(30 citation statements)

References 15 publications

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“…토양에서 유기산은 자연적인 화학반응에 관여하는 물질로서, 이러한 화학반응의 대표적인 예로 식물의 뿌리에서 배출된 유기산이 토양의 결합 된 인을 용해하고 식물이 양분으로 흡수하는 것이다 (Hue 1991;Bolan et al, 1994;Iyamuremye and Dick, 1996;Jones, 1998;Yang et al, 2000;Haynes and Mokolobate, 2001;Hu et al, 2001;Palomo et al, 2006;Wang et al, 2008).…”

Section: Treatmentunclassified

“…이러한 점을 보완하고자 인위적으로 고농도의 유기산을 투입하여 토양 중 인산의 유효도를 향상시 킬 수 있다 (Stanford and Pierre, 1953). 이러한 연구는 국외에 서 유기산의 종류와 처리농도에 따른 인산의 가용성, 존재 형 태의 변화 (Earl et al, 1979;Lopez-Hernandez et al, 1986;Jones and Darrah, 1994;Lan et al, 1995;Yang et al, 2000;Hu et al, 2001;Palomo et al, 2006) 토양 및 식물체 분석 토양시료는 유기산을 처리한 후 Table 3. Height and dry weight of corns cultivated in soil applied the organic acids.…”

Section: Top Root CM -------------------------------G Plant -1 ------unclassified

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Effects of Organic Acids on Availability of Phosphate and Growth of Corn in Phosphate and Salts Accumulated Soil

Kim¹,

Park²,

Lee³

et al. 2016

Korean Journal of Soil Science and Fertilizer

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Accumulated Phosphate can be released by ligand exchange reaction of organic acids. The objective of this study was to evaluate effects of the organic acids on the availability of phosphate and the growth of crop in phosphate and salts accumulated soil. Soil samples were collected from farmer's plastic film house. Available phosphate and electrical conductivity of soil were 3,005 mg kg -1 and 16.63 dS m -1 which were 6 and 8 times higher than the optimum range of soil for crop growth, respectively. Corns were cultivated in pots for 2 months. Treatments were no treatment (control), phosphate fertilizer (P), citric acid (CA) 1, 5, 10 mM, and oxalic acid (OA) 1, 5, 10 mM. Water soluble phosphorus, available phosphate, corn growth and uptake were determined after cultivation. Results showed that organic acids increased water soluble phosphorus and available phosphate. For the level of 10 mM, the order of effectiveness of organic acids for water soluble P was citric acid (44%) > oxalic acid (32%). Height and dry weight of corns were increased significantly by the treatment of citric acid 1 and 5 mM. Also, corn absorbed more phosphorus, nitrogen, potassium, calcium and magnesium in the treatment of citric acid 1 mM than these of other treatments. Even though phosphate availability of soil was enhanced by addition of citric acid 10 mM, the growth of corns decreased because high concentration of citric acid caused salt damage by increasement of electrical conductivity. Thus, the citric acid of 1 mM has the potential to improve the availability of phosphate and the healthy growth of corns.

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Section: Treatmentunclassified

Section: Top Root CM -------------------------------G Plant -1 ------unclassified

Effects of Organic Acids on Availability of Phosphate and Growth of Corn in Phosphate and Salts Accumulated Soil

Kim¹,

Park²,

Lee³

et al. 2016

Korean Journal of Soil Science and Fertilizer

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“…A high correlation exists between the final pH of soil and soluble P (Walpola et al, 2013). Organic acids can reduce soil pH, resulting in the dissociation of insoluble P and metal ions in soil (Hu et al, 2001;Ryan et al, 2001). Jain screened A. niger that decreased pH of culture from 7.0 to 2.03 at 12 d (Jain et al, 2014), A. niger in this study that decreased pH of culture from 6.9 to 1.73 at 30 h. Excessively low soil acidification can cause soil problems because the acids produced by microorganisms will lead to soil acidification (Li et al, 2008).…”

Section: Discussionmentioning

confidence: 99%

An Effective Method for Screening and Testing the True Phosphate-Solubilizing Fungus That Enhances Corn Growth

Gong¹,

Du²,

Xue³

et al. 2014

JAS

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The effect of large-scale application of phosphate-solubilizing microorganisms (PSMs) on the promotion of crop growth varies. Usually the solubilization of tricalcium phosphate is considered as the standard for screening most PSMs. This study aimed to establish a common method for screening and testing true PSMs. The isolated fungus's phosphate-solubilizing ability, adaptation to corn root exudates, organic acids secreted, and colonization ability were analyzed. And the microorganism's diversity and ability to promote corn growth were also tested through plot experiment. The isolated fungus Aspergillus niger H1 (A-H1) was isolated and identified from plant rhizosphere that could solubilize phosphate, utilize corn root exudates as sources, and propagate well in vitro and soil. Lactic acid was excreted and reached 377.9 μg mL -1 at 30 h in culture by A-H1, which decreased the pH of culture to 1.73. The amount of A-H1 increased by 41-fold in 28 d and was maintained for 49 d. PSM showed selectivity on the transformation of different forms of P.However, a wide range of insoluble phosphates, such as Ca 8 H 2 (PO 4 ) 6 ·5H 2 O, AlPO 4 , FePO 4 , and Ca 10 (PO 4 ) 6 (OH) 2 , was converted to soluble CaHPO 4 in soil.CaHPO 4 was also inhibited from being converted into insoluble phosphate by A-H1. Corn yield increased by 10.71% that remarkable higher than the control after A-H1inoculation. Data show that A-H1 could propagate well, solubilize phosphate in soil, and promote corn growth. A common method was created to screen and test a true phosphate-solubilizing fungus that enhances plant growth.

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“…Organic P mineralisation contributes to the available P pool, but the degree of mineralisation is dependent on the stability of organic P fractions and the microbial activity (Bowman and Cole, 1978). Low-molecularweight aliphatic organic acids, such as citric and oxalic, have been reported to reduce P adsorption by soil and P-fixing minerals, and to desorb soil P, thus improving the availability of soil P to plants (Hu et al, 2001;2002). In contrast, the role of phenolic acids in mobilisation of P has not been reported.…”

Section: Introductionmentioning

confidence: 99%

Influence of phenolic acids on phosphorus mobilisation in acidic and calcareous soils

Tang

Rengel

2005

Plant Soil

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Phenolic acids and phenols are abundant in soils. However, little information is available on the role of these compounds in mobilisation of soil phosphorus (P). The present study examined the effects of three phenolics on P mobilisation in comparison with citric acid in three soils differing in chemical properties. The soils were incubated with organic compounds at concentrations of 0 to 100 µmol g −1 soil for 30 min. While the addition of phenolic acid anions and phenol decreased soil pH, citrate either increased or did not affect soil pH depending on the soil type. All the organic compounds increased the amounts of easily-mobilised P fractions in the order of catechol ≥ citric acid ≥ proto-catechuic acid ≥ caffeic acid for the acid soils and citric acid > catechol = proto-catechuic acid > caffeic acid for the calcareous soil. Phosphorus mobilisation did not correspond to the amounts of Ca, Fe or Al ions released from the soils. These results suggest that organic acids and phenols altered the P fractions from stable, sparingly-soluble forms to easily dissolvable forms, and that chelation or precipitation of cations with organic ligands occur before biodegradation of the ligands.

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Effect of several organic acids on phosphate adsorption by variable charge soils of central China

Cited by 58 publications

References 15 publications

Effects of Organic Acids on Availability of Phosphate and Growth of Corn in Phosphate and Salts Accumulated Soil

Effects of Organic Acids on Availability of Phosphate and Growth of Corn in Phosphate and Salts Accumulated Soil

An Effective Method for Screening and Testing the True Phosphate-Solubilizing Fungus That Enhances Corn Growth

Influence of phenolic acids on phosphorus mobilisation in acidic and calcareous soils

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