Long-term effect of low potassium fertilization on its soil fractions

Madaras, Mikuláš; Koubová, Magdaléna; Smatanová, Michaela

doi:10.17221/290/2014-pse

Cited by 10 publications

(5 citation statements)

References 17 publications

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“…Nilawonk et al (2008) reported that ninety-six percent of the total release of non-exchangeable K was from the clay-size fraction and approximately 4% was from the sand and silt fractions of soils. Madaras et al (2014) also reported higher available K content in soils with higher clay content, which confirms the high dependence of K fractions on soil texture. The difference in K release from the non-exchangeable K sources in Kazova watershed mostly results from the variation of soil texture and organic matter content of soils.…”

Section: Resultssupporting

confidence: 64%

Spatial variability of soil potassium and its relationship to land use and parent material

Akbaş¹,

Günal²,

Acır³

2017

Soil Water Res.

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Information on the spatial distribution of plant nutrients is a prerequisite to predict their behaviour and to monitor the fertility in a watershed. This study was conducted to evaluate variations of plant available potassium (PAK) and non-exchangeable potassium (NEK) of a watershed with different land use and parent materials. Eight hundred soil samples were taken from 0-30 and 30-60 cm depths across the Kazova watershed of 20 656 ha in size. Average PAK was 152.8 mg/K kg in surface layers and 167.2 mg/kg in subsurface layers. NEK was 925 mg K/kg in surface and 167.2 mg K/kg in subsurface layers. All forms of K were the lowest in soils formed over serpentinite. Soils in pastures had the highest PAK and NEK. Both K forms were positively related to clay content. Spatial variability patterns of PAK and NEK were similar and consistent at both soil depths. The variation in parent material and land use is considered as the main cause for large variations of potassium forms.

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Section: Resultssupporting

confidence: 64%

Spatial variability of soil potassium and its relationship to land use and parent material

Akbaş¹,

Günal²,

Acır³

2017

Soil Water Res.

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“…As reported for Poland by Fotyma (2007), the content of exchangeable K in soils originating from the postglacial loamy-sand does not exceed a threshold value of 100 mg K/kg soil (Sparks 1987). Soils developed from loamy bedrock, widespread in AL and CZ, are several times richer in both total and available K forms (Madaras et al 2014). Under such conditions, the productive K f rates are expected to be exceptionally high, exceeding even 400 kg K/ha (Kovacevic and Grgić 1995).…”

Section: Resultsmentioning

confidence: 59%

Potassium impact on nitrogen use efficiency in potato - a case study from the Central-East Europe

Grzebisz¹,

Čermák²,

Rroço³

et al. 2017

Plant Soil Environ.

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During the last century, potato (Solanum tuberosum L.) has become a worldwide elementary staple food. The key reason for this process is the high nutritional value of potato as a carbohydrate source, storability, and ease and divergent uses. Breeding programmes resulted in new cultivars with improved yield potential (Brown 2011). In spite of a significant biological progress during the recent decades, actual yields in many countries are unsatisfactory and fail to rise further. Between 2004 and 2013, the world average yield increased from 17.7 t/ha to 19.5 t/ha (FAOSTAT 2016). The estimated potential yields for Poland (PL) and the Czech Republic (CZ) are 39.7 t/ha, 47.7 t/ha (Supit et al. 2010), while the actual yields during 2003-2013 ranged from 15-24 t/ha and 23-30 t/ha for PL and CZ, respectively, and from 15-24 t/ha for Albania (AL) (FAOSTAT 2016).The key reason of much lower real yields is not rooted only in the course of weather, but also results from low efficiency of applied nitrogen (N) fertilizer. The current mineral nutrition management in the Central Europe crop production is N-oriented, almost neglecting other nutrients, like phosphorus (P) and potassium (K). As a result, harvested yields are highly year-to-year variable (Grzebisz et al. Potato yield is affected by an interaction between nitrogen (N) and potassium (K) supply. This hypothesis was verified in a series of field experiments conducted during 2010-2013 in Albania (AL), Czech Republic (CZ) and Poland (PL). The two-factorial experiment was founded on relative scales of K (0, 50, 100, and 150%), and N application rates (75% and 100%) of the recommended doses, which were country-specific. The average tuber yield was doubled for AL, increased by 50% for PL, and by 15% for the CZ in response to K and N interaction. These differences are caused by an increase in the apparent nitrogen efficiency (ANE), which rose significantly by the progressive Krates. Maximum average ANE of 90 kg tubers/kg N was recorded in AL; it was 2-fold lower in CZ. Top average apparent potassium efficiency (AKE) of 65 kg tubers/kg K was recorded in PL; it was 4-times lower in CZ. The relationships between AKE and ANE clearly demonstrate the tight interaction between the N and K, and its effects on potato yield. However, a sound K application management should be adjusted to the local edaphic and climatic conditions.

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“…The higher concentration of plant-available K in pastures in NV can be explained by intensive grazing and potassium returning via excrement to the soil [72]. Some authors [73,74] reported a positive relationship between plant-available K content, mean annual temperature, and clay content. However, in our study, there were not significant differences between lowland sites with higher mean annual temperatures and upland sites with lower mean annual temperatures.…”

Section: Discussionmentioning

confidence: 99%

Carbon and Nitrogen Stocks in Agricultural Soils under Different Natural Conditions and Management in Slovakia

Kizeková,

Kanianska,

Jančová

et al. 2024

Land

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Soil is a natural capital which supplies valuable ecosystem services including carbon and nitrogen storage. Agroecosystems play an important role in soil organic carbon (SOC) and soil total nitrogen (NT) accumulation. The aim of this study was to analyse SOC stock (SOCS) and NT stock (NTS) in relation to land use (arable land-AL, permanent grasslands-PG), management, soil depth, and selected soil properties of six soil subtypes (Rendzic Leptosol—LPrz, Dystric Cambisol—CMdy, Stagnic Cambisol—CMst, Haplic Fluvisol—FLha, Gleyic Fluvisol—FLgl, Haplic Chernozem—CHha) which are the most widespread in Slovakia. SOCS for a 50 cm deep soil profile ranged from 161 t.ha−1 in CHha to 59 t.ha−1 in FLgl in grasslands, and in arable lands from 111 t.ha−1 in CHha to 38 t.ha−1 in CMst. In grasslands, FLs and CMst showed the significantly lowest SOCS and NTS in comparison to CMdy, LPrz, and CHha. The mean soil NT content in arable land and grasslands was 2.21 g.kg−1 and 2.82 g.kg−1, respectively. ANOVA showed that soil subtype, land use, and site have significantly affected SOCS but not NTS. The correlation analysis revealed correlations between SOCS and NTS. SOCS was also correlated with C:N, pH, P, and K. This study should help to encourage practices to maintain soil C and soil properties and to ensure the sustainability of the functions of many soil types in Slovakia.

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Long-term effect of low potassium fertilization on its soil fractions

Cited by 10 publications

References 17 publications

Spatial variability of soil potassium and its relationship to land use and parent material

Spatial variability of soil potassium and its relationship to land use and parent material

Potassium impact on nitrogen use efficiency in potato - a case study from the Central-East Europe

Carbon and Nitrogen Stocks in Agricultural Soils under Different Natural Conditions and Management in Slovakia

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