Climate sequence of soils developed on granites in the Sierra de Gata, Salamanca, Spain

Quilchano, Consuelo; Egido, J. A.; González, M. I.

doi:10.1080/15324989509385906

Cited by 7 publications

(8 citation statements)

References 10 publications

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“…Studies of variation in soil properties in dierent precipitation regimes generally show that concentrations of extractable/exchangeable nutrients are relatively high in semiarid sites and decrease with increasing precipitation (HoÈ gberg 1989;Schulze et al 1991). Soil organic carbon follows the opposite pattern, increasing with increasing annual rainfall (Amundson et al 1989;Burke et al 1991;Quilchano et al 1995a). While total soil nutrient contents may also increase, C:N and C:P ratios in soils widen with increasing mean annual precipitation (MAP) (Roberts et al 1989), suggesting that with increasing rainfall, the rate of carbon accretion in soil exceeds that of total nutrient accumulation.…”

Section: Introductionmentioning

confidence: 95%

“…Rates of weathering, leaching, and atmospheric deposition of nutrients all increase with increasing water availability (Stark 1994;Newman 1995;Quilchano et al 1995a), but it is the balance between these processes of input and loss that ultimately determines nutrient supply. Studies of variation in soil properties in dierent precipitation regimes generally show that concentrations of extractable/exchangeable nutrients are relatively high in semiarid sites and decrease with increasing precipitation (HoÈ gberg 1989;Schulze et al 1991).…”

Section: Introductionmentioning

confidence: 99%

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Nutrient dynamics on a precipitation gradient in Hawai'i

1998

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We evaluated soil and foliar nutrients in five native forests in Hawai'i with annual rainfall ranging from 500 mm to 5500 mm. All of the sites were at the same elevation and of the same substrate age; all were native-dominated forests containing Metrosiderospolymorpha Gaud. Soil concentrations of extractable NO-N and PO-P, as well as major cations (Ca, Mg, and K), decreased with increasing annual precipitation, and δN values became more depleted in both soils and vegetation. For M.polymorpha leaves, leaf mass per area (LMA) and lignin concentrations increased significantly, while δC values became more depleted with increasing precipitation. Foliar phosphorus, and major cation (Ca, Mg, and K) concentrations for M.polymorpha all decreased significantly with increasing precipitation. For other native forest species, patterns of LMA, δC, and δN generally mirrored the pattern observed for M. polymorpha. Decreasing concentrations of available rock-derived nutrients in soil suggest that the effect of increased rainfall on leaching outweighs the effect of increasing precipitation on weathering. The pattern of decreased foliar nutrient concentrations per unit leaf area and of increased lignin indicates a shift from relatively high nutrient availability to relatively high carbon gain by producers as annual precipitation increases. For nitrogen cycling, the pattern of higher inorganic soil nitrogen concentrations in the drier sites, together with the progressively depleted δN signature in both soils and vegetation, suggests that nitrogen cycling is more open at the drier sites, with smaller losses relative to turnover as annual precipitation increases.

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Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Nutrient dynamics on a precipitation gradient in Hawai'i

1998

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“…Soils developed under Mediterranean-type climate conditions show a wide range of geochemical characteristics associated with differences in total soil organic C (SOC) content [1,2] and clay mineralogical composition [3]. This trend is observed in Portugal for soils developed on granites, which cover about 35% of the north-west and central parts of the country [4,5].…”

Section: Introductionmentioning

confidence: 99%

“…Having this in view, a study was conducted to gain deeper understanding regarding extractability Al and lime effects on its solubility in soils developed on granites, occurring under a wide range of mean annual precipitation. The specific objectives were (1) to determine the contents of extractable Al using 1 M KCl, 0.33 M LaCl 3 , and 0.5 M CuCl 2 extractants and evaluate their relationships with soil properties; (2) to assess the concentration of Al species and other ions in soil solution following lime application and speciate and calculate their respective activities in solution using the GEOCHEM program.…”

Section: Introductionmentioning

confidence: 99%

Extractable Al and Soil Solution Ionic Concentrations in Strongly Leached Soils from Northwest Iberia: Effects of Liming

Auxtero¹,

Madeira²,

Parker

2012

ISRN Soil Science

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Strongly leached soils occurring in Northwest Iberia contain high concentration of Al which may affect crop growth. Information regarding the extractability of Al and lime required to eliminate toxic Al species in the soil solution is scarce. In this context, the extractability of Al on these soils was determined using 1 M KCl, 0.33 M LaCl3 and 0.5 M CuCl2. The effects of lime on the concentration and activity of Al species in soil solution, using the GEOCHEM program was also evaluated. Extractability of Al was in the order: 1 M KCl < 0.33 M LaCl3 < 0.5 M CuCl2, with ranges from 0.7–3.3, 1.3–4.4, and 1.8–13.5 cmolc kg-1, respectively. These values were positively correlated with cation exchange capacity and organic C, clay, Alo and Feo contents. Application of 6 t CaCO3 ha-1 increased the total concentrations of Ca+2, Mg+2, K+, and Na+ ions in soil solution, whereas, application of 2 t CaCO3 ha-1 reduced the concentration and activity of Fe+3, Al+3, Mn+2, Zn+2, Cu+2, SO4-2, and PO4-3 ions,and eliminated toxicity threshold of free Al+3 and Al soluble complexes in the soil solution. Application of low amounts of lime may prevent the negative effects of soluble Al on crops.

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“…Effect of cover crop and SCB liquid manure on leaf mineral content in 17-year-old 'Niitaka' pear trees. (Austin & Vitousek, 1998;Newman 1995;Quilchano et al 1995;Stark 1994) 인 용 문 헌…”

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confidence: 99%

Effect of SCB Liquid Manure Application in Pear Orchard Managed by Cover Crop System on Tree Growth, Potential Nutrient Recovery and Soil Physicochemical Properties

Lee¹,

Park²,

Choi³

2012

Korean Journal of Soil Science and Fertilizer

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Many farmers have been seeking alternatives to chemical fertilizer for successful organic fruit production. This experiment was carried out to investigate the replaceability of chemical fertilizer by cover crop and slurry composting biofiltration (SCB) liquid manure (LM) application in pear orchard. Three treatments were contained in this experiment; cover crop only and cover crop + LM treatment, and control (chemical fertilizer application). Dry weight and mineral contents of gramineous cover crops were significantly increased in LM-combined treatments than that of leguminous species. Bulk density of soil was decreased in rye + LM and hairy vetch + LM treatments, compared with each cover crop treatment. Soil pH was lowest in fertilizer treatment and soil nitrate content became similar between treatments after rainy season. Available soil phosphate was lower in cover crop and cover crop + LM treatmemts than control, but exchangeable Mg was higher. The mineral content and net assimilation rate of leaves showed no difference between the treatments. As a result, it is suggested that the application of SCB liquid manure in pear orchard managed by cover crops is desirable to maintain the productivity by improving soil physical properties and potential nutrient recovery.

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Climate sequence of soils developed on granites in the Sierra de Gata, Salamanca, Spain

Cited by 7 publications

References 10 publications

Nutrient dynamics on a precipitation gradient in Hawai'i

Nutrient dynamics on a precipitation gradient in Hawai'i

Extractable Al and Soil Solution Ionic Concentrations in Strongly Leached Soils from Northwest Iberia: Effects of Liming

Effect of SCB Liquid Manure Application in Pear Orchard Managed by Cover Crop System on Tree Growth, Potential Nutrient Recovery and Soil Physicochemical Properties

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