Characterizing differences in the phosphorus activation coefficient of three typical cropland soils and the influencing factors under long-term fertilization

Wu, Qingmin; Zhang, Shuxiang; Zhu, Ping; Huang, Shaomin; Wang, Boren; Zhao, Lun; Xu, Minggang

doi:10.1371/journal.pone.0176437

Cited by 50 publications

(48 citation statements)

References 41 publications

(56 reference statements)

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“…The relatively lower soil pH in Eutric Cambisol could promote the dissolution of soil original P, so the rate of the soil Olsen-P decrease was largest among the three sites with the same P deficit. Compared with Calcaric Cambisol, the organic matter in Luvic Phaeozems was higher, which could promote the transformation of soil organic and inorganic P into Olsen-P [20]. Therefore, the decrease in the Olsen-P in Luvic Phaeozems was higher than that in Calcaric Cambisol under treatments without P fertilizers.…”

Section: Plos Onementioning

confidence: 90%

“…The three long-term experiment sites, which were established in 1990, are located in Gongzhuling (GZL), Jilin province, Northeast China; Zhengzhou (ZZ), Henan province, Central China; and Qiyang (QY), Hunan province, South China (Fig 1) [20]. The study period of the three sites is from 1990 to 2012.…”

Section: Experimental Sitesmentioning

confidence: 99%

“…The soils at the three sites are classified as Luvic Phaeozems in GZL, Calcaric Cambisol in ZZ, and Eutric Cambisol in QY [FAO]. The description of the three sites and the initial physicochemical properties of the surficial soil (0-20 cm) in 1990 are summarized in Table 1 [20].…”

Section: Experimental Sitesmentioning

confidence: 99%

“…annually before the seeding of maize. The average annual fertilizer application amounts are summarized in Table 2 [20].…”

Section: Plos Onementioning

confidence: 99%

“…The result could be explained by the transformation of organic P (Po) into inorganic P (Pi) fractions, and the high SOM content could promote this process [33]. Under NPK and NPKS, the Po decreased by 50% and 56%, respectively, and the Pi increased by 34% and 57%, respectively [20], during the 21-year experiment. In addition, a high clay content might be another reason for the significant increase in soil Olsen-P with the low P surplus under NPK and NPKS in Luvic Phaeozems.…”

Section: -mentioning

confidence: 99%

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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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Section: Plos Onementioning

confidence: 90%

Section: Experimental Sitesmentioning

confidence: 99%

Section: Experimental Sitesmentioning

confidence: 99%

“…annually before the seeding of maize. The average annual fertilizer application amounts are summarized in Table 2 [20].…”

Section: Plos Onementioning

confidence: 99%

Section: -mentioning

confidence: 99%

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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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Using poultry litter for cotton phosphorus nutrition in Australia

2023

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In the Riverina, NSW, Australia, abundant poultry litter (PL) could offer an alternative P nutrition source for irrigated cotton (Gossypium hirsutum L.). We assessed soil P availability, sequentially extracted P fractions, crop P uptake, and cotton yields using PL applications compared with mono‐ammonium phosphate (MAP) fertilizer in an alkaline Vertosol during the 2020–2021 season. Treatments were control, 150 kg MAP ha–1, 150 kg MAP ha–1 plus 4 Mg PL ha–1, and 4, 10, and 15 Mg PL ha–1. Crop P uptake (22–38 kg ha–1) at defoliation, seed P export (14–20 kg ha–1), P use efficiency (5.1–6.6 kg seed‐P Mg–1 lint), and lint yield (2,654–3,118 kg ha–1) were not different across treatments. Apparent recovery of P treatments was low (<15%). Across treatments, soil Colwell‐P (0.5 M NaHCO3) were invariably high (23–70 mg kg–1) during crop‐growing season and did not differ from planting to first‐flower. Residual inorganic‐P (conc‐HCl‐Pi + H2SO4‐H2O2‐Pi) declined by 12% with concurrent increases in labile NaHCO3‐Pi (4%) and organic‐P (dil‐HCl‐Po [4%] and conc‐HCl‐Po [3%]) over 18‐mo (from pre‐trial baseline sampling to defoliation) across treatments. At defoliation, the 15 Mg PL ha–1 treatment had lower soil pH and exchangeable sodium percentage and higher soil total C, moderately‐labile soil organic‐P (dil‐HCl‐Po), Colwell‐P, and extractable K than the control, MAP, or 4 Mg PL ha–1 treatments. Although P applications may not improve lint productivity because of inherent soil P release within a single cropping‐season, PL (15 Mg ha–1) may fully substitute for commercial MAP fertilizer for soil P maintenance and improving soil conditions in surface‐irrigated high‐yielding cotton in southeastern Australia.

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The distribution, effectiveness and environmental threshold of soil aggregate phosphorus fractions in the sub‐alpine region of Southwest China

et al. 2022

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This article is a study of total phosphorus (TP), available phosphorus (AP) and phosphorus (P) fractions of soil aggregates along an altitude gradient in the sub-alpine region of Southwest China. We conclude that soil aggregate TP and AP contents are higher at 3980 m and 3347 m; there are no significant differences in soil aggregate TP at any altitude (p > 0.05); the AP and phosphorus activation coefficient (PAC) are higher in 0.25-0.5 mm aggregate. Soil aggregates TPi > TPo at 3009 m and TPo > TPi at 3347, 3654 and 3980 m. Using multiple stepwise regression analysis, we conclude that NaOH-Pi is the key fraction of AP supply, NaHCO 3 -Pi and NaOH-Pi are important fractions of CaCl 2 -P. Through piecewise linear fitting of soil aggregate AP and CaCl 2 -P, the soil P environmental threshold obtained is 27.766 mg kg À1 in this region. Also we got <0.25 mm, 0.25-0.5 mm aggregates at 3980 m which have high soil P loss risk. Our study fills in gap about the distribution of P fraction in aggregates and effects of soil P fraction for AP and CaCl 2 -P in high-altitude areas. Our study provides a reference and scientific basis for understanding the soil aggregate P storage capacity and the biological effectiveness of P fractions at high altitudes. Our study on the P environmental threshold provides a reference for soil P storage capacity. Our study provides a reference value for the soil P loss risk management, and sustainable development of soil ecosystems in the sub-alpine region of Southwest China.

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Characterizing differences in the phosphorus activation coefficient of three typical cropland soils and the influencing factors under long-term fertilization

Cited by 50 publications

References 41 publications

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

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

Using poultry litter for cotton phosphorus nutrition in Australia

The distribution, effectiveness and environmental threshold of soil aggregate phosphorus fractions in the sub‐alpine region of Southwest China

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