Search results
Results from the WOW.Com Content Network
The use of soil tests, coupled with the corresponding provisions, can alleviate issues of nutrition and irrigation that can result from non porous Ultisol. [4] Soil tests help indicate the pH, and red clay soil typically has a low pH. [5] The addition of lime is used to help to increase the pH in soil and can help increase the pH in Ultisol as ...
In Southeast Asia, oxisols are found on remnants of the Cimmerian microcontinent, and on the Shan–Thai terrane. In Thailand , rhodic ferralsols, called Yasothon soils, are said to have formed under humid tropical conditions in the early Tertiary , on an extensive plain later uplifted to form the Khorat Plateau .
Brown soil. Brown earth is a type of soil.Brown earths are mostly located between 35° and 55° north of the Equator.The largest expanses cover western and central Europe, large areas of western and trans-Uralian Russia, the east coast of America and eastern Asia.
Soils are the product of climate, organisms and topography, acting on parent (geologic) material over time. Thus the great diversity of geologic materials, geomorphic processes, climatic conditions, biotic assemblages and land surface ages in the United States is responsible for the presence of an enormous variety of mineral and organic soils.
Chernozem (/ ˈ tʃ ɜːr n ə z ɛ m / CHUR-nə-zem), [a] also called black soil, regur soil or black cotton soil, is a black-colored soil containing a high percentage of humus [3] (4% to 16%) and high percentages of phosphorus and ammonia compounds. [4] Chernozem is very fertile soil and can produce high agricultural yields with its high ...
Rainfed agriculture is a type of farming that relies on rainfall for water. It provides much of the food consumed by poor communities in developing countries.E.g., rainfed agriculture accounts for more than 95% of farmed land in sub-Saharan Africa, 90% in Latin America, 75% in the Near East and North Africa, 65% in East Asia, and 60% in South Asia.
One of the greatest challenges in Mesoamerica for farmers is the lack of usable land, and the poor condition of the soil. The two main ways to combat poor soil quality , or lack of nutrients in the soil, are to leave fields fallow for a period of time in a milpa cycle, and to use slash-and-burn techniques. [ 2 ]
Soil limiting is a practice used to deter Al toxicity by raising the pH of the soil. [4] However, this can be costly and difficult to implement on a large scale. [4] Thus, investigating the use of more tolerant plants is a noteworthy effort. L. racemosus genes helped prevent root growth reduction when incorporated into modern wheat cultivars ...