- calcareous soils
- – soils controlled by a calcium-based parent-material such as limestone or chalk.
Geography Dictionary & Glossary for Students \\ ITS Tutorial School (ITS) - Hong Kong.
Geography Dictionary & Glossary for Students \\ ITS Tutorial School (ITS) - Hong Kong.
Alkali soils — Alkali, or alkaline, soils are clay soils with a relatively high exchangeable sodium percentage, a relative high pH (> 9), a poor soil structure and a low infiltration capacity. Often they have a hard calcareous layer at 0.5 to 1 m. depth (in… … Wikipedia
Geography of Western Australia — Western Australia occupies nearly one third of the Australian continent.Due to the size and the isolation of the state, considerable emphasis has been made of these features; it is the second largest administrative territory in the world, after… … Wikipedia
Pachypodium habitats — consist of isolated, specialized, micro environmental niches, generally xeric, rocky, frost free areas within parts of western Madagascar and southern Africa. Pachypodium species are often indifferent to the regional ecological, biotic zone of… … Wikipedia
Orange (fruit) — Orange Orange blossoms and oranges on tree … Wikipedia
Tuber (genus) — Taxobox name = Truffle image width = 250px regnum = Fungi divisio = Ascomycota subphylum = Pezizomycotina classis = Pezizomycetes ordo = Pezizales familia = Tuberaceae genus = Tuber subdivision ranks = Species subdivision = Tuber aestivum Tuber… … Wikipedia
Truffle (fungus) — A truffle ( /ˈtrʌ … Wikipedia
Banksia epica — taxobox name = Banksia epica image caption = Inflorescence of B. epica regnum = Plantae unranked divisio = Angiosperms unranked classis = Eudicots ordo = Proteales familia = Proteaceae genus = Banksia species = B. epica binomial = Banksia epica… … Wikipedia
Amanita echinocephala — Taxobox name = Amanita echinocephala status = rare (Red Data List) regnum = Fungi divisio = Basidiomycota classis = Agaricomycetes ordo = Agaricales familia = Amanitaceae genus = Amanita species = A. echinocephala binomial = Amanita echinocephala … Wikipedia
Soil pH — is the pH of soil water. It is based on the measurement of pH, which depends on the activity of hydrogen ions (H+) in a solution.There are many different methods to collect soil water, all which influence the measured soil pH in one way or… … Wikipedia
1938 USDA soil taxonomy — The 1938 USDA soil taxonomy was a soil classification system adopted by the United States Department of Agriculture, now obsolete. The classification system used previously was developed and published in 1936 by C.F. Marbut, who was chief of the… … Wikipedia