Soils retrogression and degradation — in the French school of pedology are two regressive evolution processes associated with the loss of equilibrium of a stable soil. Retrogression is primarily due to erosion and corresponds to a phenomenon where succession reverts back to pioneer… … Wikipedia
land-improvement — melioracija statusas Aprobuotas sritis melioracija apibrėžtis Dirvožemio vandens, šilumos ir oro režimo reguliavimas hidrotechninėmis, kultūrtechninėmis, agromelioracinėmis ir kitomis priemonėmis, siekiant sudaryti geresnes žemdirbystės sąlygas,… … Lithuanian dictionary (lietuvių žodynas)
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
Land improvement — or land amelioration is making land more usable by humans. In terms of agriculture amelioration includes: *Hydrological improvement (drainage, irrigation, leaching of saline soils, landslide and flood control) *Soil improvement (fertilization,… … Wikipedia
On-Grade Mat Foundation for Expansive Soils — An on grade mat foundation is an above ground type of foundation used to provide load bearing capacity in expansive, rocky or hydro collapsible soils. The foundation, or “Wafflemat,” is created by connecting a series of 8½” or 12” high, 19” x 19” … Wikipedia
International Maize and Wheat Improvement Center — Centro Internacional de Mejoramiento de Maíz y Trigo, CIMMYT Front gates of CIMMYT in El Batán. Maize test fields seen far center. Formation 1943 [1 … Wikipedia
irrigation and drainage — ▪ agriculture Introduction artificial application of water to land and artificial removal of excess water from land, respectively. Some land requires irrigation or drainage before it is possible to use it for any agricultural production; other… … Universalium
Arbuscular mycorrhiza — An arbuscular mycorrhiza (plural mycorrhizae or mycorrhizas) is a type of mycorrhiza in which the fungus penetrates the cortical cells of the roots of a vascular plant.Arbuscular mycorrhizae (AMs) are characterized by the formation of unique… … Wikipedia
Melioration — melioracija statusas Aprobuotas sritis melioracija apibrėžtis Dirvožemio vandens, šilumos ir oro režimo reguliavimas hidrotechninėmis, kultūrtechninėmis, agromelioracinėmis ir kitomis priemonėmis, siekiant sudaryti geresnes žemdirbystės sąlygas,… … Lithuanian dictionary (lietuvių žodynas)
amelioration — melioracija statusas Aprobuotas sritis melioracija apibrėžtis Dirvožemio vandens, šilumos ir oro režimo reguliavimas hidrotechninėmis, kultūrtechninėmis, agromelioracinėmis ir kitomis priemonėmis, siekiant sudaryti geresnes žemdirbystės sąlygas,… … Lithuanian dictionary (lietuvių žodynas)
