Effectiveness of Standard Soil Tests for Assessing Potassium Availability in Sand Rootzones

Woods, Micah; Ketterings, Quirine M.; Rossi, Frank S.

doi:10.1097/00010694-200502000-00004

Cited by 10 publications

(11 citation statements)

References 15 publications

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“…Rapid laboratory procedures are used to assess K availability. These tests involve the extraction of soil K, with each soil testing procedure extracting a different proportion of the total soil K. An evaluation of six soil extraction methods (1 M NH 4 OAc, Mehlich 3, Morgan, 0.01 M CaCl 2 , 0.01 M SrCl 2 , and water) for their ability to quantify extractable K showed that the methods differed in total extracted K but were equally effective in detecting K fertilization‐induced changes in extractable soil K (Woods et al, 2005). Because methods differ in soil:solution ratio, pH, ionic composition, and shaking time, different testing methods extract different pools of soil K. Plant‐available K and the pools from which soil K is extracted are discussed in detail in McClean and Watson (1985) Laboratories select a particular extraction method on the basis of convenience, cost, and effectiveness.…”

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Potassium Availability Indices and Turfgrass Performance in a Calcareous Sand Putting Green

et al. 2006

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Turfgrass managers regularly apply K to creeping bentgrass [Agrostis stolonifera var. palustris (Huds.) Farw.] putting greens on the basis of soil test results or in some relation to annual N fertilizer rates. In the many putting greens that have sand rootzones, K is susceptible to leaching, and in calcareous sands, K availability is further limited by high Ca levels. The K requirements for calcareous sand putting greens are not clear. A 2-yr field study was conducted on an L-93 creeping bentgrass putting green grown on a calcareous sand rootzone at Ithaca, NY. Potassium fertilizer was applied with N in 167 mL H 2 O m 22 at 0, 1, 2, 3, 5, and 6 g K m 22 14 d 21 during the 2002 and 2003 growing seasons. Leaf tissue samples were collected monthly, and soil samples were collected every 56 d. Turfgrass performance characteristics such as color, quality, and ball roll were evaluated visually and quantitatively. Without K addition, soil test K indicators decreased over time, and low levels of soil K (,1.25 mmol 1 M NH 4 OAc-K kg 21 ) were prevalent in all plots receiving the lowest (,2 g K m 22 14 d 21 ) K rates. Potassium application had no beneficial effects on turfgrass performance. We conclude that acceptable creeping bentgrass performance can be achieved across a wide gradient of soil K levels and tissue K contents (255-639 mmol kg 21 dry weight) in calcareous sand rootzones. Recommended levels of soil and tissue K should be reevaluated to avoid gratuitous use of K fertilizers.

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Potassium Availability Indices and Turfgrass Performance in a Calcareous Sand Putting Green

et al. 2006

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“…Conventional soil testing methods for K in sand rootzones are also difficult to interpret (16), but the extracted K for a particular method and K fertilizer rate appears to be less variable (17) than does the K supply rate at a given K fertilizer rate.…”

Section: A Feasible Methods Of Measuring K?mentioning

confidence: 99%

“…Twenty-four rectangular plots (91 cm by 328 cm) were laid out on an L-93 creeping bentgrass research putting green (pH 8.3) at the Cornell University Turfgrass and Landscape Research and Education Center in Ithaca, NY. A detailed description of the chemical and physical properties of this sand can be found in Woods et al (16). The 1 M ammonium acetate extractable K in June 2002 was 36 mg/kg, which is classified as low (1).…”

Section: Potassium Applicationsmentioning

confidence: 99%

Potassium Supply Rate as Measured by Exchange Membranes in a Calcareous Sand

Woods

Rossi

Ketterings

2006

Applied Turfgrass Science

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“…The comparison of different soil tests for K extraction is often done among soil scientists (Salomon 1998;Armesto, and Sotres 1993;Csathó 1998;Øgaard and Krogstad 2005;Sardi and Fuleky 2002;Schindler, Woodard, and Doolittle 2002;Woods, Ketterings, and Rossi 2005). Some of them compared the AL K test (Salomon 1998;Csathó 1998;Øgaard and Krogstad 2005;Sardi and Fuleky 2002) or AA K test (Armesto and Sotres 1993;Csathó 1998;Øgaard and Krogstad 2005;Schindler, Woodward, and Doolittle 2002;Woods, Ketterings, and Rossi 2005) to each other or to other tests.…”

Section: Introductionmentioning

confidence: 99%

“…Some of them compared the AL K test (Salomon 1998;Csathó 1998;Øgaard and Krogstad 2005;Sardi and Fuleky 2002) or AA K test (Armesto and Sotres 1993;Csathó 1998;Øgaard and Krogstad 2005;Schindler, Woodward, and Doolittle 2002;Woods, Ketterings, and Rossi 2005) to each other or to other tests. They mostly detected very strong or good correlation among soil K tests (Salomon 1998;Armesto and Sotres 1993;Csathó 1998), but in some cases, the correlation can be very low (Sardi and Fuleky 2002).…”

Section: Introductionmentioning

confidence: 99%

Four‐Year Dynamic of Potassium on Two Sites Interpreted by Different Soil Tests

Lončarić¹,

Popović²,

Engler³

et al. 2009

Communications in Soil Science and Plant Analysis

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Three soil-potassium (K) tests were compared using soil and plant samples collected during fertilization and liming experiments in Croatia on very acid dystric luvisol and slightly alkaline calcaric regosol. Soil samples were analyzed for pH KCl , pH H2O , organic matter, and ammonium lactate (AL, pH 3.75)-extracted phosphorus (P) and K. In addition, K was extracted with ammonium acetate (AA, pH 7) and with ammonium acetate ethylenediaminetetraacetic acid (AAEDTA, pH 4.6). In spring 2003, the dystric luvisol was limed with 0, 10, or 20 t ha -1 carbocalk (by-product at sugar beet processing, effective neutralizing value 69.1%). During the next four seasons, four different crops were grown without fertilization, with standard fertilization, and with doubled P amounts. All three soil K tests showed highly significant correlations of fertilization impact on extractable soil K and can be efficiently used for fertilizer recommendations. Balance calculation is closer to results of extractable K on fertilized plots than on control plots and use of AAEDTA or AL than AA extraction.

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Effectiveness of Standard Soil Tests for Assessing Potassium Availability in Sand Rootzones

Cited by 10 publications

References 15 publications

Potassium Availability Indices and Turfgrass Performance in a Calcareous Sand Putting Green

Potassium Availability Indices and Turfgrass Performance in a Calcareous Sand Putting Green

Potassium Supply Rate as Measured by Exchange Membranes in a Calcareous Sand

Four‐Year Dynamic of Potassium on Two Sites Interpreted by Different Soil Tests

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