Potassium Availability in Several Indiana Soils: Its Nature and Methods of Evaluation

Rouse, R. D.; Bertramson, B. R.

doi:10.2136/sssaj1950.036159950014000c0026x

Cited by 34 publications

(12 citation statements)

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“…This separation in classes permitted the re-establishment of the critical level of 60 mg dm -3 for most of the soils planted in RS and SC since they have CTC 7 from 5.1 to 15 cmol c dm -3 (Rheinheimer et al, 2001). However, there is evidence that it is difficult to fit soils in availability classes because in most cases they are not satisfactory indexes for estimating the soil supply capacity (Rouse & Bertramson, 1949;Mohr, 1959;Oliveira et al, 1971;Nachtigall & Vahl, 1991;Meurer & Anghinoni, 1993;Melo et al, 2004;Bortoluzzi et al, 2005;Brunetto et al, 2005;Kaminski et al, 2007). Thus, in soils rich in micaceous minerals, the K content is naturally high, while in kaolinitic soils, the content varies from high to low.…”

Section: Introductionmentioning

confidence: 99%

Potassium availability in a hapludalf soil under long term fertilization

Kaminski

Moterle

Rheinheimer

et al. 2010

Rev. Bras. Ciênc. Solo

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In a system in which fertilization is recommended, diagnosis of soil K availability and the establishment of critical levels are made difficult by the possibility of a contribution of non-exchangeable forms of K for plant nutrition. Due to its magnitude, this contribution is well diagnosed in long term experiments and in those which compare fertilization systems with positive and negative balances in terms of replacement of the K extracted by plants. The objective of this study was to evaluate K availability in a Hapludalf under fertilization for sixteen years with the addition of K doses. The study was undertaken in an experiment set up in 1991 and carried out until 2007 in the experimental area of the Soil Department of the Federal University of Santa Maria (Universidade Federal de Santa Maria -UFSM), in Santa Maria (RS), Brazil. The soil was a Typic Hapludalf submitted to four doses of K (0, 60, 120 and 180 kg ha -1 K 2 O) and subdivided in the second year, when 60 kg ha -1 of K 2 O were reapplied in the subplots in 0, 1, 2 and 3 times. As of the fifth year, the procedure was repeated. Grain yield above ground dry matter and total K content contained in the plant tissue were evaluated. Soil samples were collected, oven dried, ground, passed through a sieve and submitted to exchangeable K analysis by the Mehlich-1 extractor; non-exchangeable K by boiling HNO 3 1 mol L -1 and total K by HF digestion. Potassium fertilization guidelines should foresee the establishment of a critical level as of which the recommended dose should accompany crop needs, which coincides with the quantity exported by the grain,

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Section: Introductionmentioning

confidence: 99%

Potassium availability in a hapludalf soil under long term fertilization

Kaminski

Moterle

Rheinheimer

et al. 2010

Rev. Bras. Ciênc. Solo

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“…This is essentially in agreement with work presented by Rouse and Bertramson (1949) who found increases in the exchangeable K status of soils to be increased from 0 to 53 percent, from fall to spring, where corn was pre viously grown. A significant linear regression of the increase (fall to spring) in exchangeable K on the initial (fall) value was determined where corn was the previous crop ( Figure 15).…”

Section: Utilization Of K From £ Single Source Having £ Variable K Cosupporting

confidence: 92%

“…1945, Evans and Attoe 1948, Legg and Beacher 1952, Pearson 1952, and Rouse and Bertramson 1949. The method of investigation usually consisted of growing a series of different crops or several harvests of the same crop under greenhouse conditions with subsequent determination of total K removal.…”

Section: Forms Of Soil Potassium Used As a Criterion Inmentioning

confidence: 99%

An evaluation of the availability of potassium in crop residues

Grimes

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“…For soils with significant amounts ofreserve-K or for those which can incorporate added K into the reserve-K 'pool' (Agarwal 1960;Arnold 1970;Grimme et al 1971;Kansal & Sekhon 1976), exchangeable K alone may not give an adequate measure of plant-available K status. An estimate of reserve-K contents of these soils is necessary to determine their K status and hence their fertiliser K requirement (Rouse & Bertramson 1949).…”

Section: Introductionmentioning

confidence: 99%

A modified sodium tetraphenylboron method for the routine determination of reserve-potassium status of soil

Jackson¹

1985

New Zealand Journal of Experimental Agriculture

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A method was developed and tested which is suitable for the routine determination of the reserve-potassium (reserve-K) level of soili.e., K which is plant-available but not exchangeable to 1M ammonium acetate. The method is simple, relatively quick, and uses 2 g soil and 20 ml 0.03M sodium tetraphenylboron (NaTPB) in 1M sodium chloride with a 16 h extraction time. The KTPB precipitated is dissolved in an acetone medium and analysed directly by atomic absorption spectrophotometry. The NaTPB method was compared with 4 other measurements of soil K status: New Zealand Ministry of Agriculture and Fisheries Quick Test for K (STK), K exchangeable to ammonium acetate by leaching (1(..,), boiling nitric acid extractable K (1(..), and K extracted by 0.05M barium acetate at pH 5.0. These methods were tested by correlation of the extraction results with dry matter yield, total K uptake, and % K in ryegrass (Lolium perenne L.) grown to exhaustion on 13 soils of varying K status. The new method was then validated against the same ryegrass parameters for a further 25 soils exhausted of K in a separate glasshouse trial. K TPB , the quantity of K extracted by the NaTPB method, was highly correlated with K uptake by ryegrass (n = 13, r 2 = 0.90***; n = 25, r 2 = 0.94***), with yield (n = 13, r 2 = 0.74***; n = 25, r 2 = 0.56***), and with % K in herbage (n = 13, r 2 = 0.77***; n = 25, r 2 = 0.85***). It was generally superior to the other K measurements in all correlations examined. The method is sensitive to changes in K status caused by K uptake by plants and can identify K uptake from soil reserves after minimum levels of 1(.., (or STK) are reached. K T PB levels are less likely to be affected by seasonal variation than are STK levels. The NaTPB method is not suited to very large batch sizes and would be best used as a supplement to STK level measurements to establish the reserve-K content of soil. The method determines shortto medium-term availability of K, rather than the long-term availability indicated by the K, level. It would be most useful for soils which have significant reserve-K and in the low-medium STK range « 8).

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Potassium Availability in Several Indiana Soils: Its Nature and Methods of Evaluation

Cited by 34 publications

References 0 publications

Potassium availability in a hapludalf soil under long term fertilization

Potassium availability in a hapludalf soil under long term fertilization

An evaluation of the availability of potassium in crop residues

A modified sodium tetraphenylboron method for the routine determination of reserve-potassium status of soil

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