The forms and availability to plants of soil potassium as related to mineralogy for upland Oxisols and Ultisols from Thailand

Darunsontaya, Timtong; Suddhiprakarn, A.; Kheoruenromne, Irb; Prakongkep, N.; Gilkes, Robert

doi:10.1016/j.geoderma.2011.10.002

Cited by 46 publications

(34 citation statements)

References 34 publications

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“…No K fertilizer was applied throughout the duration of the experiment. To ensure that nutrient supply overall did not limit plant growth, we initially gave a basal dose of nutrients (before starting the experiment) and repeated after each harvest (Cox et al, 1999;Darunsontaya et al, 2012;Li et al, 2015a). The soils were allowed to reach equilibrium for 1 week at field capacity, and deionized water was given every 1-2 days to maintain the soil moisture close to 80% of field capacity throughout the experiment.…”

Section: Pot Culture Experimentsmentioning

confidence: 99%

“…The ability of the soil to release K determines the plant availability of K in the soil system (Havlin & Westfall, 1985;De et al, 1993;Cox & Joern, 1997;Sarkar et al, 2013), which in turn is influenced by the content of 2:1 K-bearing minerals in soils (Cox & Joern, 1997;Ghosh & Singh, 2001;Darunsontaya et al, 2012;Andrist-Rangel et al, 2013;Paola et al, 2016). Indeed, such clay minerals, even when they are present in modest quantities, increase the level of AK in soil (Mortland et al, 1956;Tributh et al, 1987;Hinsinger et al, 1992;Surapaneni et al, 2002;Øgaard & Krogstad, 2005).…”

Section: Introductionmentioning

confidence: 99%

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Soil Reserves of Potassium: Release and Availability to Lolium perenne in Relation to Clay Minerals in Six Cropland Soils from Eastern China

Wang

Chen

et al. 2017

Land Degrad Dev

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An 8‐month greenhouse experiment with ryegrass (Lolium perenne L.) examined the relationship between the dynamics of potassium (K) reserves in soil and changes in clay minerals, using X‐ray diffraction. The capacity of soil to release K was consistent with its ability to supply it and was the highest in the soil samples collected from Laiyang (H1T2a), Harbin (H1T1) and Beibei (H2T4), followed by the sample from Jiangyan (H1T2b), and the lowest in the samples from Gao'an (H2T3a) and Wangcheng (H2T3b). Removal of soil K decreases the intensity of reflections for illite and increases that for interstratified clay minerals. The centre of gravity values of the clay fractions was significantly negatively correlated to the depletion of soil K reserves, as ascertained through chemical extraction or through plant action. The quantitative regression equations between the centre of gravity values and the dynamics of soil reserves of K can be used for predicting the release and plant availability of K even without growing a crop. Copyright © 2017 John Wiley & Sons, Ltd.

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Section: Pot Culture Experimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Soil Reserves of Potassium: Release and Availability to Lolium perenne in Relation to Clay Minerals in Six Cropland Soils from Eastern China

Wang

Chen

et al. 2017

Land Degrad Dev

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“…However, despite the beneficial effects of K nutrition on leaf water relations, a recent study of Eucalyptus grandis plantations showed that the increase in tree water demand in response to K supply reduced water storage in deep soil layers during rainy periods, which led to an increase in water deficit during severe droughts (Battie- Laclau et al, 2014b). Although K nutrition has been much less studied than nitrogen and phosphorus nutrition in forest ecosystems, recent studies showed that gross primary productivity (GPP) is strongly K-limited over large tropical areas (R€ omheld & Kirkby, 2010;Darunsontaya et al, 2012;Santiago et al, 2012;Gonc ßalves et al, 2013). A wide range of morphological and physiological traits are modified by the K and water supply regimes (Zhang, 1996;Egilla et al, 2001;Laclau et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Measured and modeled interactive effects of potassium deficiency and water deficit on gross primary productivity and light‐use efficiency in Eucalyptus grandis plantations

Christina

Maire

Battie-Laclau

et al. 2015

Global Change Biology

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Global climate change is expected to increase the length of drought periods in many tropical regions. Although large amounts of potassium (K) are applied in tropical crops and planted forests, little is known about the interaction between K nutrition and water deficit on the physiological mechanisms governing plant growth. A process-based model (MAESPA) parameterized in a split-plot experiment in Brazil was used to gain insight into the combined effects of K deficiency and water deficit on absorbed radiation (aPAR), gross primary productivity (GPP), and light-use efficiency for carbon assimilation and stem biomass production (LUEC and LUEs ) in Eucalyptus grandis plantations. The main-plot factor was the water supply (undisturbed rainfall vs. 37% of throughfall excluded) and the subplot factor was the K supply (with or without 0.45 mol K m(-2 ) K addition). Mean GPP was 28% lower without K addition over the first 3 years after planting whether throughfall was partly excluded or not. K deficiency reduced aPAR by 20% and LUEC by 10% over the whole period of growth. With K addition, throughfall exclusion decreased GPP by 25%, resulting from a 21% decrease in LUEC at the end of the study period. The effect of the combination of K deficiency and water deficit was less severe than the sum of the effects of K deficiency and water deficit individually, leading to a reduction in stem biomass production, gross primary productivity and LUE similar to K deficiency on its own. The modeling approach showed that K nutrition and water deficit influenced absorbed radiation essentially through changes in leaf area index and tree height. The changes in gross primary productivity and light-use efficiency were, however, driven by a more complex set of tree parameters, especially those controlling water uptake by roots and leaf photosynthetic capacities.

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“…The bioavailability of K in soils was ranked in terms of the potential capacity of a soil to sustain plant growth with no additional K fertilizer, and was mainly related to plant growth and the release characteristics of K in soils7263335. Table 3 shows the available grading criterion of soil K with the parameters we propose.…”

Section: Discussionmentioning

confidence: 99%

“…There were two K treatments: (i) no K fertilizer was applied throughout the experimental period; and (ii) potassium sulfate (200 mg K kg −1 soil) was applied as a K fertilizer. To ensure that the general nutrient supply did not limit plant growth, basal nutrients were applied initially and after each harvest72635. The first basal application was given before initiation of the experiment and soils were allowed to equilibrate for 1 week at field capacity; they were watered with deionized water every 1–2 days to maintain soil moisture close to 80% of field capacity throughout the pot culture period.…”

Section: Methodsmentioning

confidence: 99%

A new grading system for plant-available potassium using exhaustive cropping techniques combined with chemical analyses of soils

Wang

Zhou

et al. 2016

Sci Rep

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A new grading system for plant-available potassium (K) in soils based on K release rate from soils and plant growth indices was established. In the study, fourteen different agricultural soils from the southern subtropical to the northern temperate zones in China were analyzed by both chemical extraction methods and exhaustive cropping techniques. Based on the change trends in plant growth indices, relative biomass yields of 70% and 50%, K-deficient coefficients of 35 and 22 under conventional exhaustive experiments, and tissue K concentrations of 40 g kg−1 and 15 g kg−1 under intensive exhaustive experiments were obtained as critical values that represent different change trends. In addition, the extraction method using 0.2 mol L−1 sodium tetraphenylboron (NaTPB) suggested soil K release rates of 12 mg kg−1 min−1 and 0.4 mg kg−1 min−1 as turning points that illustrated three different release trends. Thus, plant-available K in soils was classified into three categories: high available K, medium available K and low available K, and grading criteria and measurement methods were also proposed. This work has increased our understanding of soil K bioavailability and has direct application in terms of routine assessment of agriculture soils.

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The forms and availability to plants of soil potassium as related to mineralogy for upland Oxisols and Ultisols from Thailand

Cited by 46 publications

References 34 publications

Soil Reserves of Potassium: Release and Availability to Lolium perenne in Relation to Clay Minerals in Six Cropland Soils from Eastern China

Soil Reserves of Potassium: Release and Availability to Lolium perenne in Relation to Clay Minerals in Six Cropland Soils from Eastern China

Measured and modeled interactive effects of potassium deficiency and water deficit on gross primary productivity and light‐use efficiency in Eucalyptus grandis plantations

A new grading system for plant-available potassium using exhaustive cropping techniques combined with chemical analyses of soils

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