Organic amendments affect phosphorus sorption characteristics in a paddy soil

Xiao, Yan; Wang, Dejian; Zhang, Hai‐Lin; Zhang, Gang; Wei, Zongqiang

doi:10.1016/j.agee.2013.05.009

Cited by 114 publications

(68 citation statements)

References 35 publications

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“…Among the soil properties associated with soil P sorption, aluminum and iron extracted by ammonium oxalate (Al ox and Fe ox , respectively) are known to play predominant roles in controlling P retention in soils subjected to flooding and draining for rice cultivation (Yan et al 2013). There are numerous studies reporting that flooding can significantly influence the precipitation and transformation of Al ox and Fe ox in wetland soils (e.g., Darke and Walbridge 2000;Schönbrunner et al 2012).…”

Section: Introductionmentioning

confidence: 97%

Phosphorus status and its sorption-associated soil properties in a paddy soil as affected by organic amendments

et al. 2015

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Purpose Yet the transformation and contribution of amorphous aluminum and iron which are usually indicated as oxalateextractable forms (Al ox and Fe ox ) to phosphorus (P) sorption in paddy soils, under long-term organic amendments combined with alternating flooding and draining, were not fully understood. The aim of this study was to investigate the effects of organic amendments on P status and P sorption-associated attributes including Al ox and Fe ox in a paddy soil. Materials and methods We selected 26 study sites that varied in three fertilization regimes (i.e., MF, straw, and manure) and three management histories (i.e., 2, 8, and 13 years) in the experiment station. Soil samples were assayed for (1) P accumulation status including total P, Olsen-P, oxalate-extractable (P ox ) and degree of soil saturation with P (DPS), and (2) soil properties associated with P sorption including pH, soil organic matter (SOM), Al ox , and Fe ox . Results and discussion Manure application presented significantly greater values for DPS (16.3 %, P<0.01), Olsen-P/TP ratio (4 %, P<0.01), and Olsen-P/P ox ratio (6.8 %, P<0.01). Moreover, it increased the contents of Al ox and Fe ox in the paddy soil, especially the content of Al ox . Phosphorus accumulation in the paddy soil was not significant in straw treatment vs. MF treatment. Both Al ox (P<0.01) and Fe ox (P<0.05) exhibited significantly linear relationships with SOM, suggesting that the organo-Al(Fe) complexes might widely generate in the paddy soil, which have strong affinity to P. In comparison with Fe ox , Al ox showed greater correlation coefficients with soil P forms (varying from 0.56 to 0.81) and higher predictability for DPS of the paddy soil (R 2 =0.3679, P<0.01). Conclusions These results suggest that Al ox is the primary soil property associated with P sorption in the paddy soil under long-term organic amendments and repeated redox circulations.

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Section: Introductionmentioning

confidence: 97%

Phosphorus status and its sorption-associated soil properties in a paddy soil as affected by organic amendments

et al. 2015

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“…Local farmers treat mineral fertilizer as the most convenient and effective method to increase food production and their income, without considering the effects on soil or environmental quality. Continuous excessive applications of mineral fertilizer can lead to nutrient accumulation in soil, and eventual P and N loss from soil to aquatic ecosystems (Qiao et al, 2012;Zhang et al, 2003;Yan et al, 2013). Excessive N and P applications will also deteriorate the soil quality and reduce the soil's production levels.…”

Section: Introductionmentioning

confidence: 99%

Responses of absolute and specific soil enzyme activities to long term additions of organic and mineral fertilizer

Zhang

Dong

Dai

et al. 2015

Science of The Total Environment

171

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• Acid phosphatase activity was negatively correlated with soil pH and P content.• βG, NAG, and LAP activities were positively correlated with SOC and Total N contents.• The four enzyme activities were significantly higher under manure than NPK fertilizer.• Enzyme activities were positively correlated with actinomycete and G + bacterium.• We recommend reducing P fertilizer application rates to subtropical paddy soils. G R A P H I C A L A B S T R A C Ta b s t r a c t a r t i c l e i n f o Long-term phosphorus (P) and nitrogen (N) applications may seriously affect soil microbial activity. A long-term field fertilizer application trial was established on reddish paddy soils in the subtropical region of southern China in 1998. We assessed the effects of swine manure and seven different rates or ratios of NPK fertilizer treatments on (1) the absolute and specific enzyme activities per unit of soil organic carbon (SOC) or microbial biomass carbon (MBC) involved in C, N, and P transformations and (2) their relationships with soil environmental factors and soil microbial community structures. The results showed that manure applications led to increases in the absolute and specific activities of soil β-1,4-glucosidase(βG), β-1,4-N-acetylglucosaminidase (NAG), and leucine aminopeptidase (LAP). The absolute and specific acid phosphatase (AP) activities decreased as mineral P fertilizer application rates and ratios increased. Redundancy analysis (RDA) showed that there were negative correlations between absolute and specific AP activities, pH, and total P contents, while there were positive correlations between soil absolute and specific βG, NAG, and LAP enzyme activities, and SOC and total N contents. RDA showed that the contents of actinomycete and Gram-positive bacterium PLFA biomarkers are more closely related to the absolute and specific enzyme activities than the other PLFA biomarkers (P b 0.01). Our results suggest that both the absolute and specific enzyme activities could be used as sensitive soil quality indicators that provide useful linkages with the microbial community structures and environmental factors. To maintain microbial activity and to minimize environmental impacts, P should be applied as a combination of inorganic and organic forms, and total P fertilizer application rates to subtropical paddy soils should not exceed 44 kg P ha −1 year −1 .

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“…Likewise, the correlation result proved that the higher the concentrations of extractable iron and aluminum in soil, the lower the concentrations of P determined from HCl extract. It has been reported by several studies that it is oxyhydroxydes of aluminum and iron in weathered acidic soils rather than Ca that supersede the active surface of soils on which P is adsorbed (Agbenin 2003;Yan et al 2013;Campos et al 2016). Therefore, with increasing concentrations of these free oxides, the amount of HCl extractable P decreases.…”

Section: Extent Of Phosphorus Saturationmentioning

confidence: 99%

Chemical forms of phosphorous and physicochemical properties of acid soils of Cheha and Dinsho districts, southern highlands of Ethiopia

et al. 2018

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Background: Soil acidity and low availability of P are among the major problems limiting crop production in the highlands of Ethiopia. The current study was conducted to evaluate the distribution of chemical P forms and selected physical and chemical properties of soils in Cheha and Dinsho districts, southern highlands of Ethiopia. Twelve representative composite soil samples were collected from the surface layer (0-15 cm) and analyzed for selected soil properties. Analysis of available P and oxalate extractable P, Al and Fe, and P fractionation were done following standard procedures. Results:The pH of soils in the study area ranged from 4.65 to 5.45. In the study area the Mehlich-3 extractable P ranged from 8.90 to 25.75 mg kg −1 , while the Bray-I extractable P varied from 8.54 to 22.81 mg kg −1. The studied soils had a total P content that ranged from medium to very high. Mehlich-3 P was positively and significantly correlated with pH, CEC and OM, while it was negatively and significantly (P ≤ 0.01) correlated with exAc and exAl. Oxyhydroxides of iron and aluminum were dominating the exchange sites of the studied soils. In terms of the relative abundance of P forms, Res-P and HCl-P followed by NaOH-P o and NaOH-P i were the dominant P forms in Cheha and Dinsho districts respectively. The total sum of readily available P forms (NH 4 Cl-P i , NaHCO 3 -P i and NaHCO 3 -P o ) did not exceed 4% of the total P. Conclusion:Soils of the study area were acidic in reaction and found to have low available P. Given the presence of considerable amount of total P, low P availability and high soil acidity in the study areas, further research has to be done on adsorption characteristics to determine the P requirements of the soils for better P management.

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Organic amendments affect phosphorus sorption characteristics in a paddy soil

Cited by 114 publications

References 35 publications

Phosphorus status and its sorption-associated soil properties in a paddy soil as affected by organic amendments

Phosphorus status and its sorption-associated soil properties in a paddy soil as affected by organic amendments

Responses of absolute and specific soil enzyme activities to long term additions of organic and mineral fertilizer

Chemical forms of phosphorous and physicochemical properties of acid soils of Cheha and Dinsho districts, southern highlands of Ethiopia

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