Movement of Phosphorus in a Calcareous Soil as Affected by Humic Acid

Du, Zhen‐Yu; Wang, Qinghua; Liu, Fang‐Chun; Ma, Hailin; Ma, Bin; Malhi, S. S.

doi:10.1016/s1002-0160(13)60011-9

Cited by 52 publications

(30 citation statements)

References 25 publications

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“…Furthermore, the addition of humic acids can also increase the distance of P movement and the concentration of extractable P in soil surrounding phosphate fertilizer placements (Du et al, 2013). A similar conclusion was reached by Jones et al (2007).…”

Section: Humic Acids and Ligninsupporting

confidence: 55%

Phosphorus activators contribute to legacy phosphorus availability in agricultural soils: A review

Zhu

Whelan

2018

Science of The Total Environment

499

242

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Phosphorus (P) is one of the most limiting macronutrients for crop productivity and P deficiency is a common phenomenon in agricultural soils worldwide. Despite long-term application of phosphate fertilizers to increase crop yields, P availability is often low, due to the high affinity of phosphate for the soil solid phase. It has been suggested that the accumulated (surplus) P in agricultural soils is sufficient to sustain crop yields worldwide for about 100years. In this paper, we try to clear up the potential for making use of legacy P in soils for crop growth potentially alleviating the global P resource shortage. Specifically, we try to clear up the potential of soil "P activators" for releasing fixed P. P activators accelerate and strengthen process which transform P into bio-available forms via a range of chemical reactions and biological interactions. They include phosphate solubilizing microorganisms, phosphatase enzymes and enzyme activators, low molecular weight organic acids, humic acids, lignin, crop residues, biochar and zeolites. Although reported performance is variable, there is growing evidence that P activators can promote the release of phosphate from soil and, hence, have potential for mitigating the impending global P crisis. Further basic and applied research is required to better understand the mechanisms of interaction of P activators with natural soils and to maximize activator efficacy.

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Section: Humic Acids and Ligninsupporting

confidence: 55%

Phosphorus activators contribute to legacy phosphorus availability in agricultural soils: A review

Zhu

Whelan

2018

Science of The Total Environment

499

242

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“…Cimrin and Yilmaz (2005) indicated that a single application of HA to lettuce did not improve its yield, while the combined application of 120 kg ha −1 of phosphorus together with 300 kg ha −1 of HA increased the head weight of lettuce very much. The combination of HA and NPK chemical fertilizer might improve the availability of rhizosphere nutrients, and enhance the activities of microorganisms and enzymes, which thus stimulate plant growth (Du et al, 2013;Nardi et al, 2002). Turgay et al (2011) indicated that the application of humic-fulvic substances alone showed different inclinations on selected soil characteristics in consecutive cropping seasons.…”

Section: Discussionmentioning

confidence: 99%

Promotion of Lateral Root Growth and Leaf Quality of Flue-Cured Tobacco by the Combined Application of Humic Acids and NPK Chemical Fertilizers

Shen

et al. 2016

Ex. Agric.

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SUMMARYIn this study, the effects of HA combined with NPK fertilizer (HANPK) on root growth and leaf quality of tobacco plants were investigated in tobacco fields. Results indicated that the application of HA alone did not enhance the growth of tobacco obviously, while HANPK increased tobacco biomass by 36.9% and stimulated the growth of lateral roots significantly. The number of the second-order lateral roots was increased by 89.3% compared with the control. Furthermore, HANPK raised the ratio of root biomass in 0–20 cm soil layer over the whole soil layer and increased the proportion of fine roots over the total roots. Tobacco leaf yield, output value, and benefit of HANPK were 12.2%, 29.4% and 35.5% higher than those of the control, respectively. The above results suggest that the combined application of HA and NPK chemical fertilizer is an economical pattern for improving tobacco growth.

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“…SOM is an important factor for improving the soil P availability. Because substances such as organic acid, organic anions, and humic acid would be released during the decomposition of SOM, which competed with phosphates for adsorption sites on the surfaces of soil colloids through processes such as competitive adsorption and chelation [37,38,39]. The P fertilizers adsorbed by minerals could be decreased [40].…”

Section: Soil Olsen-p and Its Relationship To The P Surplusmentioning

confidence: 99%

The response of soil Olsen-P to the P budgets of three typical cropland soil types under long-term fertilization

Zhang

Wang

Wu³

et al. 2020

PLoS ONE

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The Olsen phosphorus (Olsen-P) concentration of soil is generally a good indicator for estimating the bioavailability of P and environmental risk in soils. To maintain soil Olsen-P at adequate levels for crop growth and environmental sustainability, the relationship between soil Olsen-P and the P budget (the P input minus the output) as well as the variations of soil Olsen-P and P budget were investigated from three long-term (22 years) experiments in China. Five treatments were selected: (1) unfertilized control (CK); (2) nitrogen and potassium (NK); (3) nitrogen, phosphorous, and potassium (NPK); (4) nitrogen, phosphorous, potassium and straw; (5) nitrogen, phosphorous, potassium and manure. The results showed that without P fertilizers (CK, NK), there was a soil P deficit of 75-640 kg ha-1 , and the lowest P deficit (mean of CK and NK) was in Eutric Cambisol. Soil Olsen-P decreased by 0.11-0.39 mg kg-1 year-1 in the order of Luvic Phaeozems > Eutric Cambisol > Calcaric Cambisol. Soil Olsen-P and the P deficit had a significantly (P<0.01) positive linear relationship. For every 100 kg of P ha-1 of deficit, soil Olsen-P decreased by 0.44-9.19 mg kg-1 in the order of Eutric Cambisol > Luvic Phaeozems > Calcaric Cambisol. Under the P fertilizer treatments (NPK, NPKS, and NPKM), soil Olsen-P showed an obvious surplus (except the NPK and NPKS in Luvic Phaeozems) of 122-2190 kg ha-1 , and the largest P surplus was found under the NPKM treatment at each site. The relation between soil Olsen-P and the experimental years could be simulated using quadratic equation of one unknown in Calcaric Cambisol for the lower P input after 14 years of fertilization. And soil Olsen-P increased by 1.30-7.69 mg kg-1 year-1 in the order of Luvic Phaeozems > Eutric Cambisol. The relation between soil Olsen-P and the P surplus could be simulated by a simple linear equation except under NPK and NPKS in Luvic Phaeozems. With 100 kg ha-1 P surplus, soil Olsen-P increased by 3.24-7.27 mg kg-1 in the order of Calcaric Cambisol (6.42 mg kg-1) > Eutric Cambisol (3.24 mg kg-1). In addition, the change in soil Olsen-P with a 100 kg P ha-1 surplus (soil Olsen-P efficiency) was

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Movement of Phosphorus in a Calcareous Soil as Affected by Humic Acid

Cited by 52 publications

References 25 publications

Phosphorus activators contribute to legacy phosphorus availability in agricultural soils: A review

Phosphorus activators contribute to legacy phosphorus availability in agricultural soils: A review

Promotion of Lateral Root Growth and Leaf Quality of Flue-Cured Tobacco by the Combined Application of Humic Acids and NPK Chemical Fertilizers

The response of soil Olsen-P to the P budgets of three typical cropland soil types under long-term fertilization

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