Leaching of Phosphorus, Calcium, Magnesium and Potassium in Barley, Grass and Fallow Lysimeters

Yläranta, Toivo; Uusi-Kämppä, Jaana; Jaakkola, Antti

doi:10.1080/09064719609410941

Cited by 15 publications

(9 citation statements)

References 10 publications

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“…The molar equivalent cation concentrations in leachate correlated strongly (data not shown) with molar equivalent nitrate concentration as expected (Steele et al 1984). Very high amounts of K can be lost through leaching from sandy soils (Yläranta et al 1996, Whitehead 2000, but here the losses through leaching and surface runoff were equal and rather modest.…”

Section: Nutrient Outputssupporting

confidence: 59%

The flows and balances of P, K, Ca and Mg on intensively managed Boreal high input grass and low input grass-clover pastures

Järvenranta

Virkajärvi

Heinonen‐Tanski

2014

AFSci

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The main objective of the study was to compare nutrient balances of phosphorus (P), potassium (K), magnesium (Mg) and calcium (Ca) on fertilized grass pasture (high input) and unfertilized grass-clover pasture (low input) both grazed by dairy cattle. The second aim was to quantify P loss in surface runoff from the fertilized grass pasture. The study was conducted on a lysimeter field that included two surface runoff collector ditches. The whole area was rotationally stocked five times per year and the amount of milk was recorded. Nutrient balances were negative on both grass and grass-clover pastures except the P balance for grass pasture, which was 18 kg ha-1 positive. The amount of total P in the surface runoff from fertilized grass pasture was 1.2–0.9 kg ha-1 y-1. It seems that in short-term ley farming, grass-clover swards can retain nutrients in the soil better than pure grass swards.

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Section: Nutrient Outputssupporting

confidence: 59%

The flows and balances of P, K, Ca and Mg on intensively managed Boreal high input grass and low input grass-clover pastures

Järvenranta

Virkajärvi

Heinonen‐Tanski

2014

AFSci

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“…Cumulative leaching curves of Fe ( Figure 2D) from the CT and OR columns were similar, reaching values of 0.90 and 0.78 mg, respectively, at the end of leaching. The results confirm the findings of Yläranta et al (1996), indicating a similarly higher leaching of magnesium than potassium from variously textured soils. This can be associated with a strong adsorption of potassium cation by soil minerals (e.g.…”

Section: Concentration and Leaching Of Nutrientssupporting

confidence: 89%

Leaching of potassium, magnesium, manganese and iron in relation to porosity of tilled and orchard loamy soil

Siczek

Kotowska

Lipiec

et al. 2008

Acta Agriculturae Scandinavica, Section B - Soil & Plant Sc

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The aim of this study was to examine the leaching of potassium, magnesium, manganese and iron in tilled and orchard silty loam soil. The experimental treatments were: conventionally tilled field (CT) with main tillage operations including preplough (10 cm)'harrowing followed by mouldboard ploughing to 20 cm depth, and a 35-year-old apple orchard (OR) with a permanent sward. Leaching of the cations was determined in soil columns of undisturbed structure, 21.5 cm diameter and 20 cm height, from a depth of 0Á20 cm. All the columns were subjected to spray irrigation at a level of 1110 ml (30 mm), and leachate in 50-ml increments was collected. Concentration of the cations in the leachate was determined using a spectrophotometer ICP-AS. Pore size distribution data showed that the volume of pores 20 mm under CT was greater at a depth of 0Á10 cm and lower in the 10Á20 cm soil layer under OR, and the reverse was true with respect to pores B6 mm. At each 50-ml leachate, concentration of all the cations was greater under CT than OR. In most leachates the differences were more pronounced for potassium and magnesium than iron and manganese. Percolation of the leachate was considerably faster in orchard than tilled soil.

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“…Remobilization of P from particulates retained in the VBSs or native soil P (accumulated in the soil through fertilizer addition before VBS establishment) could be responsible for the reported increases in DP delivery. The latter may also be highly relevant because some studies have found an increase in DP leaching after conversion of arable land to grassland (Meissner et al, 1998; Ylaranta et al, 1996).…”

Section: Discussionmentioning

confidence: 99%

Phosphorus Retention and Remobilization in Vegetated Buffer Strips: A Review

2012

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Diff use pollution remains a major threat to surface waters due to eutrophication caused by phosphorus (P) transfer from agricultural land. Vegetated buff er strips (VBSs) are increasingly used to mitigate diff use P losses from agricultural land, having been shown to reduce particulate P transfer. However, retention of dissolved P (DP) has been lower, and in some cases VBSs have increased delivery to surface waters. Th e aims of this review were (i) to develop a conceptual model to enhance the understanding of VBS functioning in terms of DP, (ii) to identify key processes within the model that aff ect DP retention and delivery, and (iii) to explore evidence for the controls on these processes. A greater understanding in these areas will allow the development of management strategies that enhance DP retention. We found evidence of a surface layer in buff er strip soils that is enriched in soluble P compared with adjacent agricultural land and may be responsible for the reported increased DP delivery. Th rough increased biological activity in VBSs, plants and microorganisms may assimilate P from particulates retained in the VBSs or native soil P and remobilize this P in a more soluble form. Th ese conclusions are based on a limited amount of research, and a better understanding of biogeochemical cycling of P in buff er strip soils is required.

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Leaching of Phosphorus, Calcium, Magnesium and Potassium in Barley, Grass and Fallow Lysimeters

Cited by 15 publications

References 10 publications

The flows and balances of P, K, Ca and Mg on intensively managed Boreal high input grass and low input grass-clover pastures

The flows and balances of P, K, Ca and Mg on intensively managed Boreal high input grass and low input grass-clover pastures

Leaching of potassium, magnesium, manganese and iron in relation to porosity of tilled and orchard loamy soil

Phosphorus Retention and Remobilization in Vegetated Buffer Strips: A Review

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