Fractionation of P in soil as influenced by a single addition of liquid swine manure

2000 ◽  
Vol 80 (4) ◽  
pp. 561-566 ◽  
Author(s):  
P. Qian ◽  
J. J. Schoenau

Limited information exists as to the short-term effect of liquid swine manure on P distribution in soil. To address this issue, forms and distribution of inorganic P (Pi) and organic P (Po) at 2 wk and 16 wk after manure addition were investigated through a sequential extraction procedure. An Orthic Black Chernozem was sampled from a field research plot (Dixon, SK) without previous manure and urea additions. Liquid swine manure and urea were applied at rates of 0, 100 and 400 mg N kg−1, corresponding 10 and 40 mg P kg−1 from manure. Manure addition did not increase the most labile P fractions in soil. Instead the initial fate of the P from the manure was mainly to enter moderately labile and stable fractions such as calcium phosphate and organic P forms. This is consistent with observations in the field that a single application of swine effluent does not have a large impact on extractable "available" P in the soil. Further studies are needed to determine how much manure P loading is required for saturation of the "fixed pool" of P in Saskatchewan soils. Key words: Phosphorus fractions, sequential P extraction, incubation, urea, swine manure, anion exchange membrane

1985 ◽  
Vol 65 (4) ◽  
pp. 651-665 ◽  
Author(s):  
T. L. ROBERTS ◽  
J. W. B. STEWART ◽  
J. R. BETTANY

A sequential extraction procedure was used to determine phosphorus fractions (resin, bicarbonate, hydroxide, sonicated hydroxide, acid and acid-peroxide digest with separate organic and inorganic P determinations) in surface and subsurface horizons taken from the upper, mid- and lower slope positions of four catenas (representing Brown, Dark Brown and Black Chernozemic soils, and a Luvisolic soil) which encompass a narrow environmental gradient of climate (annual precipitation: 300–475 mm) and vegetation. Trends in the local distribution of organic and inorganic soil P between upper and lower slope positions in any one catena were similar to the regional distribution patterns across all soil zones. Concentration of organic P, in both the surface and subsurface horizons, increased from the upper to the lower slope positions and from the Brown to the Black soils, while inorganic P decreased. The largest single organic fraction (hydroxide extractable) accounted for up to 22 and 17% of the total P (surface and subsurface horizons, respectively). Acid extractable P dominated the inorganic fractions, accounting for 40–63% of the total P (surface and subsurface horizons, respectively). The distribution of organic P along the catenas and among the soil zones was related to the transformations of inorganic P caused by differences in weathering intensity between slope positions and across the Province. Key words: Catena, climo-toposequence, sequential P extraction


2003 ◽  
Vol 83 (2) ◽  
pp. 197-202 ◽  
Author(s):  
P. Qian ◽  
J. J. Schoenau ◽  
T. Wu ◽  
S. P. Mooleki

Increasing use of animal manures in Saskatchewan requires information on the fate and distribution of residual manure Cu and Zn in Saskatchewan soils. To address this issue, the amounts of soil Cu and Zn in various inorganic and organic fractions were investigated in a field crop research plot (Cudworth Association soil) with a 5-yr history of annual application of liquid swine manure and solid cattle manure, and in two grassland field research plots (Meota and Oxbow Association soils) that had received annual application of liquid swine manure for 3 yr. The annual rates of manure application were based on N contents in the manures, and were equivalent to approximately 0, 100, 200 and 400 kg total N ha-1 yr-1 in the field crop plots, and 0 and 100 kg total N ha-1 yr-1 in grassland plots. In both the field crop and grassland manured plots there were no substantial increases in total Cu an d Zn in soils associated with manure application. Some increases in the moderately labile Cu and Zn fractions were observed in treatments with large amounts of animal manures applied every year. The liquid swine manure had less effect than cattle manure on increasing labile Cu and Zn fractions. These results indicate that annual addition of animal manures at rates of approximately 100 kg N ha-1 for 3 to 5 yr does not constitute an environmental risk from Cu and Zn loading in these soils. Key words: Cu fraction, Zn fraction, sequential Cu extraction, sequential Zn extraction, urea, swine manure, cattle manure


2004 ◽  
Vol 84 (3) ◽  
pp. 275-281 ◽  
Author(s):  
P. Qian ◽  
J. J. Schoenau ◽  
T. Wu ◽  
P. Mooleki

Repeated application of animal manures to Saskatchewan soils has led to interest in the fate and distribution of residual manure P in the soil. The concentrations of soil phosphorus in various inorganic and organic fractions were investigated in soils sampled from long-term field research plots (Dixon, SK) with a 5-yr history of annual application of liquid swine manure or solid cattle manure at low, medium and high rates. The soil type at the research site is a loamy textured Black Chernozem (Cudworth Association). Annual rates of manure application over the 5 yr were based on the N contents in the manures and were equivalent to 0 (control), and approximately 100 (low), 200 (medium) and 400 (high) kg total N ha-1 yr-1 as manure. For comparison, urea alone was also applied at rates of 50, 100 and 200 kg N ha-1 yr-1. The total P concentration in the surface soil (0&ndash15 cm) was significantly increased only by the addition of cattle manure and only in the medium and high rate treatments compared to the control. The most labile P fractions (Resin-P and NaHCO3-P) were also significantly increased with increasing rate of cattle manure addition. No significant increases in either soil total P or labile P fractions were observed in liquid swine manure treatments, which is attributed to the lower amount of P added with the swine manure treatment than the cattle manure treatment. Added P in the swine manure treatment more closely matched P removal in crop harvest compared to cattle manure treatment, which had more P added than was removed by the crop. Key words: Phosphorus fractions, labile P fraction, sequential P extraction, urea, swine manure, cattle manure


2020 ◽  
Vol 15 (No. 4) ◽  
pp. 199-210
Author(s):  
Feng Zhang ◽  
Rongping Wang ◽  
Weimin Yu ◽  
Jiawei Liang ◽  
Xinrong Liao

A pot experiment was conducted to investigate the effects of a vermicompost (VC) application on the phosphorus (P) transformation and microbial activity in a paddy soil. Changes in the following P forms were investigated: resin-P, concentrated HCl extracted inorganic (C.HCl-P<sub>i</sub>) and organic P (C.HCl-P<sub>o</sub>), diluted HCl extracted inorganic P (D.HCl-P<sub>i</sub>), NaHCO<sub>3</sub> extracted inorganic (NaHCO<sub>3</sub>-P<sub>i</sub>) and organic P (NaHCO<sub>3</sub>-P<sub>o</sub>), NaOH extracted inorganic (NaOH-P<sub>i</sub>) and organic P (NaOH-P<sub>o</sub>), and residual P. The results showed that the vermicompost application significantly (P &lt; 0.05) affected the pH, redox potential (Eh), water soluble Fe(II), HCl-extractable Fe(II), microbial biomass carbon (MBC), microbial biomass P (MBP), MBC/MBP ratio, and acid phosphatase activity (APA) of the paddy soil. In particular, the HCl-extractable Fe(II) increased by 25–56% with the vermicompost application when compared to the control (CK). With the exception of C.HCl-P<sub>i</sub>, the vermicompost application greatly increased the contents of the various P forms in the soil. In particular, the labile P (resin-P, NaHCO<sub>3</sub>-P<sub>i</sub>, and NaHCO<sub>3</sub>-P<sub>o</sub>) and moderately stable P (NaOH-P<sub>i</sub> and NaOH-P<sub>o</sub>) were significantly (P &lt; 0.01) increased. The correlation analyses showed that NaHCO<sub>3</sub>-P<sub>i</sub> was significantly and positively related to the MBC, MBP, and APA, while NaHCO<sub>3</sub>-P<sub>o</sub> was significantly and negatively related to the MBC, MBP, and APA. Both NaOH-P<sub>i</sub> and C.HCl-P<sub>i</sub> were significantly and negatively related to the APA. Both NaOH-P<sub>o</sub> and C.HCl-P<sub>o</sub> were significantly and positively related to the MBP, while NaOH-P<sub>i</sub> was significantly and negatively related to the MBP. These results indicated that a vermicompost application could effectively enhance the dissolution and reduction of Fe and the consequent mobilisation of NaOH-P<sub>i</sub>. In addition, the vermicompost application significantly (P &lt; 0.01) increased the APA and effectively mobilised the NaOH-P<sub>o</sub>.


2001 ◽  
Vol 93 (2) ◽  
pp. 358-363 ◽  
Author(s):  
John P. Schmidt ◽  
John A. Lamb ◽  
Michael A. Schmitt ◽  
Gyles W. Randall ◽  
James H. Orf ◽  
...  

1986 ◽  
Vol 66 (1) ◽  
pp. 105-119 ◽  
Author(s):  
B. I. WAGAR ◽  
J. W. B. STEWART ◽  
J. O. MOIR

A sequential phosphorus (P) fractionation procedure was used to measure the changes in the labile and stable forms of inorganic and organic P following single broadcast P applications to Canadian Chernozemic soils under cereal cropping. Approximately half of the fertilizer residues remained in plant-available forms (resin, NaHCO3). In a Black Waskada clay loam 8 yr after the application of 200 and 400 kg P ha−1, residual fertilizer P consisted of resin-P, 30–40%; HCl-P, 25–30%; residue-P, 10–15%; NaOH-P, 10–15%, NaHCO3-P, 10%; and aggregate protected P, 3%. The residues in a Dark Brown Sutherland clay 5 yr after the application of 160 kg P ha−1 were: resin-P, 35%; NaOH-P, 30–40%; NaHCO3-P, 15%; HCl-P, 0–5%; H2SO4-P, 5%; and aggregate protected P, 5%. The soils differed in the quantity of fertilizer recovered in inorganic HCl-extractable forms. In the Sutherland soil the change from wheat-fallow to continuous wheat cropping produced a build-up of organic P which occurred with and without the addition of P fertilizer. Key words: Residual P, P transformations, Labile Pi; labile Po, stable Pi stable Po


2014 ◽  
Vol 38 (3) ◽  
pp. 972-979 ◽  
Author(s):  
Arminda Moreira de Carvalho ◽  
Mercedes Maria da Cunha Bustamante ◽  
Zayra Azeredo do Prado Almondes ◽  
Cícero Célio de Figueiredo

Phosphorus fractions play a key role in sustaining the productivity of acid-savanna Oxisols and are influenced by tillage practices. The aim of this study was to quantify different P forms in an Oxisol (Latossolo Vermelho-Amarelo) from the central savanna region of Brazil under management systems with cover crops in maize rotation. Three cover crops (Canavalia brasiliensis, Cajanus cajan (L.), and Raphanus sativus L.) were investigated in maize rotation systems. These cover crops were compared to spontaneous vegetation. The inorganic forms NaHCO3-iP and NaOH-iP represented more than half of the total P in the samples collected at the depth of 5-10 cm during the rainy season when the maize was grown. The concentration of inorganic P of greater availability (NaHCO3-iP and NaOH-iP) was higher in the soil under no-tillage at the depth of 5-10 cm during the rainy season. Concentrations of organic P were higher during the dry season, when the cover crops were grown. At the dry season, organic P constituted 70 % of the labile P in the soil planted to C. cajan under no-tillage. The cover crops were able to maintain larger fractions of P available to the maize, resulting in reduced P losses to the unavailable pools, mainly in no-tillage systems.


2021 ◽  
Vol 11 ◽  
Author(s):  
Yue Liu ◽  
Huichun Yang ◽  
Qi Liu ◽  
Xiaowen Zhao ◽  
Sasa Xie ◽  
...  

Intercropping of soybean and sugarcane is an important strategy to promote sustainable development of the sugarcane industry. In fact, our understanding of the interaction between the rhizosphere and bacterial communities in the intercropping system is still evolving; particularly, the influence of different sugarcane varieties on rhizosphere bacterial communities in the intercropping process with soybean, still needs further research. Here, we evaluated the response of sugarcane varieties ZZ1 and ZZ9 to the root bacterial community during intercropping with soybean. We found that when ZZ9 was intercropped with soybean, the bacterial diversity increased significantly as compared to that when ZZ1 was used. ZZ9 played a major role in changing the bacterial environment of the root system by affecting the diversity of rhizosphere bacteria, forming a rhizosphere environment more conducive to the growth of sugarcane. In addition, our study found that ZZ1 and ZZ9 had differed significantly in their utilization of nutrients. For example, nutrients were affected by different functional genes in processes such as denitrification, P-uptake and transport, inorganic P-solubilization, and organic P-mineralization. These results are significant in terms of providing guidance to the sugarcane industry, particularly for the intercropping of sugarcane and soybean in Guangxi, China.


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