Evaluation of Modified Mehlich and Sikora Buffer Methods as an Alternative to Modified Woodruff Buffer in Determining Lime Requirement for Missouri Soils

Nathan, Manjula; Scharf, Peter C.

doi:10.1080/00103624.2012.641843

Cited by 4 publications

(14 citation statements)

References 16 publications

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“…Nathan et al. (2012) found that the MM method is comparablel to the Woodruff buffer on Missouri soils where use of the Woodruff buffer has been well established since its inception. Mohebbi and Mahler (1988) did not test the performance of the Mehlich buffer on northern Idaho soils, but the replacement of the Woodruff method by the MM in the region where the Woodruff method originated suggests that the performance of the two buffers is comparable in other regions as well.…”

Section: Resultsmentioning

confidence: 99%

“…Within the North American Proficiency Testing Program (NAPT, 2016), six analytical laboratories currently use the Mehlich or MM buffer, eight laboratories use the AE buffer, 22 use the Woodruff, 24 use the Sikora, and 25 use the SMP for providing LRE. This indicates that, despite multiple studies demonstrating the effectiveness of the Mehlich or MM test at predicting LREs under various conditions (Dietzel et al., 2009; Godsey et al., 2007; Hoskins & Erich, 2008; Nathan et al., 2012; Sims & Dennis, 1989; Wolf, Beegle, & Hoskins, 2008), it is not in common usage. This may result from the Mehlich buffer being developed in the mid‐1970s, well after the other common buffer methods, such as SMP and Woodruff, were established for soil analysis.…”

Section: Resultsmentioning

confidence: 99%

“…The MM buffer effectively substitutes CaCl 2 for displacing acidity; however, it does not prolong buffer shelf-life, which ranges from 1 wk (Dietzel et al, 2009) to 1 mo . Nathan et al (2012) noted this as a prohibitive drawback when considering its adoption for use in soil test laboratories; however, Dietzel et al (2009) suggested substituting a half quantity of BaCl 2 from the original buffer with CaCl 2 to achieve a longer shelf life with a reduced concentration of barium that is not considered hazardous waste.…”

Section: F I G U R Ementioning

confidence: 99%

“…One drawback of buffers is that many contain hazardous materials (Dietzel et al., 2009; Hoskins & Erich, 2008; Nathan, Sun, & Scharf, 2012; Sikora, 2006). The commonly used SMP buffer contains p‐nitrophenol and chromate (Shoemaker et al., 1961).…”

Section: Introductionmentioning

confidence: 99%

“…The MM buffer, developed by Hoskins and Erich (2008), replaces BaCl 2 with CaCl 2 , and the Sikora (2006) buffer effectively replaces the p‐nitrophenol and potassium chromate in the SMP method with nonhazardous reagents. Studies in several states, including New York, Missouri, Wisconsin, and Kansas, found that these “green” buffer options successfully replace historically used buffer methods containing hazardous materials (Dietzel et al., 2009; Godsey, Pierzynski, Mengel, & Lamond, 2007; Laboski & Peters, 2005; Nathan et al., 2012). Soil properties such as BS (Cantarella et al., 1998), cation exchange capacity (CEC) (Lemire, Taillon, & Hendershot, 2006), and soil texture represented by the saturated paste test (Miller & Dellavalle, 2005) have also been used for LREs.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Evaluating buffer methods for determining lime requirement on acidified agricultural soils of the Palouse

McFarland

Shiwakoti

Carpenter‐Boggs

et al. 2020

Soil Science Soc of Amer J

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Acidification of agricultural soils under intense management in the Palouse region of eastern Washington and northern Idaho is of increasing concern. Buffer methods can provide lime requirement estimates (LREs); however, locally calibrated methods are lacking. Our objective was to evaluate buffer methods and to determine which can produce optimal LREs for Palouse agricultural soils. Samples from 10 regionally dominant agricultural soils (initial pH ≤5.3) were assessed for pH changes after incubation with nine levels of calcium carbonate (CaCO 3) for 90 d under laboratory conditions. Achieving a target pH of 6 in the top 15 cm of the soil profile required 3.36-8.36 Mg ha −1 of CaCO 3. Laboratory incubation results were compared with LREs calculated from 10 established calibrations using data from seven buffer methods:

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: F I G U R Ementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Evaluating buffer methods for determining lime requirement on acidified agricultural soils of the Palouse

McFarland

Shiwakoti

Carpenter‐Boggs

et al. 2020

Soil Science Soc of Amer J

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Subsurface drainage and nitrogen management affects corn and soybean yield in claypan soils in upstate Missouri

Kaur,

Nelson,

Singh

et al. 2023

Agronomy Journal

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Nitrogen (N) and subsurface drainage water management are crucial and challenging components of sustainable crop production on poorly drained claypan soils. During extreme precipitation events, N fertilizer management is difficult in a corn (Zea mays L.)–soybean (Glycine max L.) rotation that balances productivity and environmental quality. This 4‐year (2018–2021) experiment was conducted on a poorly drained soil to examine the interactive effects of drainage (subsurface tile drainage [SD] and no drainage [ND]) and corn N fertilizer treatments (non‐treated control [NTC], fall‐applied anhydrous ammonia [AA] at 190 kg N ha−1 with nitrapyrin [fall AA + NI], pre‐plant AA [spring AA] at 190 kg N ha−1, and top‐dressed urea [TD urea] as 42 kg N ha−1 SuperU and 126 kg N ha−1 ESN as a 25:75% granular blend) on yield and nutrient uptake. Corn grain yield was 1.22–1.53 Mg ha−1 greater with fertilizer treatments in SD compared to ND. Drought conditions in 2018 lowered corn grain yield compared to 2020. Average over 2 years, corn yield in SD soils was ranked as spring AA > fall AA + NI > TD urea > NTC. While soybean yield following corn was 13% greater in the NTC compared to TD urea. The SD treatment increased soybean yield by 0.6–2 Mg ha−1 compared to ND. This study results showed that fall AA + NI produced corn yields similar to spring AA in SD and ND soils in temperate humid climatic conditions.

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Evaluation of nonhazardous lime requirement estimation methods for Oregon soils

Makepeace

Moore

Sullivan

et al. 2022

Soil Science Soc of Amer J

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The Shoemaker, McLean, and Pratt (SMP) buffer pH method has been used historically in Oregon for estimating lime requirement, however concerns regarding hazardous waste disposal have caused increased interest in nonhazardous methods. The objective was to compare nonhazardous lime requirement estimate (LRE) methods to the SMP method for predicting incubation lime requirement (LRi) for Oregon soils. Twenty‐four soils (pH ≤ 5.5) were incubated with seven rates of CaCO3 ranging from 0 to 22.4 Mg ha–1 and incubated for 90 d at 19 °C. Seven different LRE methods were evaluated and regressed against LRi for pH targets of 5.6, 6.0, and 6.4 using linear regression. The Sikora (r2 = .91–.93), modified Mehlich (r2 = .87–.90), and Sikora‐2 (r2 = .82–.93) buffer methods showed potential as alternatives to SMP (r2 = .91–.93) based on accuracy. A multilinear model combining clay content, KCl‐extractable Al, soil organic matter (SOM), extractable Mg, and pH1:2 also effectively predicted LRi (R2 = .97). The Moore–Sikora method (r2 = .89–.93) showed precision issues due to high replication variability. The single addition of Ca(OH)2 method (r2 = .67–.74) was less accurate than other evaluated methods. In conclusion, there were several viable non‐hazardous LRE method alternatives to the SMP buffer method for Oregon soils, based on accuracy and precision.

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Evaluation of Modified Mehlich and Sikora Buffer Methods as an Alternative to Modified Woodruff Buffer in Determining Lime Requirement for Missouri Soils

Cited by 4 publications

References 16 publications

Evaluating buffer methods for determining lime requirement on acidified agricultural soils of the Palouse

Evaluating buffer methods for determining lime requirement on acidified agricultural soils of the Palouse

Subsurface drainage and nitrogen management affects corn and soybean yield in claypan soils in upstate Missouri

Evaluation of nonhazardous lime requirement estimation methods for Oregon soils

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