Voorbeelden van soil

• acid soil

• This vertical section of the soil shows four basic soil layers.

• Corn is grown a lot in this area - the soil seems to suit it very well.

• These new plants haven't taken - they don't like this dry soil.

• The soil in this area is very chalky.

• A survey of soils for aggregate stability and glomalin, a glycoprotein produced by hyphae of arbuscular mycorrhizal fungi.

• Compost-treated soils exhibited higher organic carbon content than inorganically fertilized soils, throughout the experimental period.

• Although the soils are inherently fertile, deep and with good drainage, they have been depleted of nutrients over the years.

• Aluminium contents showed great variability, with the largest amounts in soils from bare eroded plots.

• Cosmopolites sordidus density was greatest in the mulched plots which may have reflected increased longevity and/or longer tenure time in moist soils.

• Seedling emergence and yield of pearl millet on naturally crusted arid soils in relation to sowing and cultural methods.

• The movement of contaminants through soils is extremely limited unless significant amounts of water are available.

• Differences in geography, cultivars, rootstocks, soils, microclimate and growers' personal preferences determine the production practices and materials used in organic apple orchard management.

• The topography was gently rolling, with thick peat extending in the lower parts and white sandy soils dominating in the upper parts.

• The soils, flora, and fauna of a geographic region uninhabited by humans largely reflect climatic and geologic factors.

• Influence of load and heat extraction on moisture transfer in freezing soils.

• After freezing, the finer-grained soils also had greater pore-ice content in comparison.

• Consequences of this process in relation to contaminant migration in freezing soils through time are discussed.

• In general, dissolved nutrient concentrations revealed low availability of inorganic nutrients in soils.

• Older soils are clearly distinguished from younger soils in having browner or reddish colours with an increased depth of oxidation.