• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Folie 1
Folie 1

... – Highest values in Belgium and the Netherlands, northern Italy and northern Spain, reflecting areas of high P use in agriculture – Specific policies to minimise P surplus, e.g., Denmark – On average, CAP reform reduced P surplus across Europe, with large reductions (>25%) in Romania and France, but ...
Folie 1 - World Agroforestry Centre
Folie 1 - World Agroforestry Centre

... – Highest values in Belgium and the Netherlands, northern Italy and northern Spain, reflecting areas of high P use in agriculture – Specific policies to minimise P surplus, e.g., Denmark – On average, CAP reform reduced P surplus across Europe, with large reductions (>25%) in Romania and France, but ...
Discovery and microbial content of the driest site of
Discovery and microbial content of the driest site of

... Temperatures followed a similar pattern, with significantly lower and more unvarying values at increasing depths. Although mean temperatures were similar in the soil profile up to 1 m depth, surface soils usually approached near 60°C during the day and 9°C during the night. In contrast, soils 100 cm ...
Introduction to Land Surface Modeling Hydrology
Introduction to Land Surface Modeling Hydrology

... Subsurface Fluxes (runoff): qsub Subgrid scale (topography governing fluxes not typically resolved) Parameterize the dependence on soil moisture, topography, soil properties ...
Soil pH for Plants
Soil pH for Plants

... Of all soil K, 90-98% is held in primary mineral structures that are very resistant to most weathering processes, and therefore not easily available to plants. This form of K is known as inorganic structural K. Roots of some plants do have the ability to take up K from solution around these primary ...
Soil Nails Brochure A/W
Soil Nails Brochure A/W

... With FE-calculations, nails or bolts are designed by changing the cohesion or by inserting a tension element (truss) in the area to be nailed/bolted. The expansion stiffness of the tension element (truss) is derived from nail/bolt tests (0.5 m long). For three-dimensional FEcalculations the modellin ...
05 Chapter 5_Weathering and Soils
05 Chapter 5_Weathering and Soils

... stable and as a result they make up a high percent of soils. • Some silica is remove from the feldspar structure and carried away by groundwater. • Another component of granite, quartz, is very resistant to chemical weathering and remains. • Eventually it is transported by water into rivers and the ...
soil micromorphology home page
soil micromorphology home page

... Images of soil thin sections from the University of Stirling. These are a small selection of images captured from soil thin section slides. A List of Thin Section Images of Rocks and Minerals. Links to numerous data bases for listings of images. Some of the links are no longer valid. Optical propert ...
2.CE417-Ch2
2.CE417-Ch2

... • The choice of equipment to be used on a construction project has a major Influence on the efficiency and profitability of the construction operation. • Although there are a number of factors that should be considered in selecting equipment for a project, the most important criterion is the ability ...
Kempen_3D kartering SOM_extabstract - Wageningen UR E
Kempen_3D kartering SOM_extabstract - Wageningen UR E

... 2.3.2. Predict the depth function parameters and construct soil type-specific depth functions To map the depth functions for each soil type the parameters of the model horizons used to characterize the depth function structure of that soil type, were interpolated on a 25-m square grid. The parameter ...
Make money from tree tomatoes
Make money from tree tomatoes

... to grow well. Therefore a wise farmer should not burn any organic material on the farm. Instead, all crop residue should be ploughed back into the soil where it breaks down, releasing nutrients into the soil. Organic waste also supports a lot of microorganisms in the soil such as earthworms and bact ...
Russell Brown Mound 1
Russell Brown Mound 1

... near the northeastern rim, one sheet on the northwestern rim, and a group of at least five sheets on the southwest rim. Immediately above the prepared clay floor was a horizon referred to in the field notes as the “burned zone,” the “fired layer,” or the “cremation area.” This appears to have been ...
Word Journal/Diary Template
Word Journal/Diary Template

... http://mii.org 8. NCRS - "Stuttgart" the Arkansas State Soil http://www.ar.nrcs.usda.gov/soils/state_soil.html 9. NCRS - What is Soil? http://soils.usda.gov/education/facts/soil.html 10. NCRS - Soil Formation and Classification http://soils.usda.gov/education/facts/formation.html 11. USGS - A Tapest ...
NON-SYMBIOTIC NITROGEN FIXATION IN TROPICAL SOILS 1
NON-SYMBIOTIC NITROGEN FIXATION IN TROPICAL SOILS 1

... (1) the lacic of plant response to nitrogenous fertilizer, (2) the recuperation of soils left under fallow, and (3) the origia of lhe large reserves of nitrogen in soils where legumes cannot be the main source of this nutrient. The innumerable papers dealing with Azotobacter in temperate regions do ...
Determination of available micronutrients in DTPA extracted soils
Determination of available micronutrients in DTPA extracted soils

... soil samples. As the microwave plasma is generated from nitrogen gas, it eliminates the need for expensive and flammable gases, which reduces operational costs and improves lab safety. Compared to FAAS, the high plasma temperature (5000 K) of MP-AES provides a higher sample matrix tolerance, lower d ...
Specialty 4R Performance Objectives Comparison Version
Specialty 4R Performance Objectives Comparison Version

... c)cropping system rotation, d)expected yields, e)results of soil, plant, water, and manure analysis, f)quantification of nutrients from all sources available to the farm, g)nutrient budget for each field, h)recommendations of nutrient rate, timing, form, and method of application, i)review and modif ...
Weathering and Soil - School of Ocean and Earth Science and
Weathering and Soil - School of Ocean and Earth Science and

... reflect more organic matter and clays. Don’t even think about learning these terms! ...
Nitrogen-fixing bacteria/archaea
Nitrogen-fixing bacteria/archaea

... • Both Bacteria and Archaea have been found in soil and water (including the ocean) all over the world. • Most scientists use DNA techniques to determine their presence in an environment. ...
the use of beneficial microorganisms in cleaning
the use of beneficial microorganisms in cleaning

... products are manufactured to the highest quality standards • All microorganisms are isolates of naturally occurring organisms and are not genetically engineered or modified ...
Towards A National Soil Database
Towards A National Soil Database

... attributed to either the marine-derived glacial muds or to the dolomitised limestones in counties Kilkenny and Kildare. Elevated levels of Na in this region are coincident Figure 2.3. Spatial distribution of cadmium levels in ...
Demonstrate understanding of soil formation and its effects on
Demonstrate understanding of soil formation and its effects on

... formation affect the primary industry? use is in pastoral farming or exotic  How does the knowledge of soil forestry. How we utilise the land chemistry explain soil formation? depends on the landforms and their  How is soil chemistry used in primary underlying rocks and soils. production to meet p ...
Chemical weathering
Chemical weathering

... • Eventually, all rocks at Earth’s surface will be completely broken down by weathering. ...
1 - Arizona Envirothon
1 - Arizona Envirothon

... hyphae and favors the growth of bacteria. Since bacteria hold less carbon than fungi, mixing often releases a large amount of carbon as carbon dioxide (CO2). The net result is loss of organic matter from the soil. When crop residue is left on the soil surface, primary decomposition is by arthropod s ...
Vegetation cover reduces erosion and enhances
Vegetation cover reduces erosion and enhances

... The objective of the work reported here was to examine the degree to which cover crops of the grass Brachypodium distachyon (L.) P. Beauv. and the cereal crop Secale cereale L. would reduce runoff, sediment movement and the loss of SOC in a rainfed vineyard compared with a standard tillage treatment ...
Phone 1-800-241-6401 - Iowa State University: Animal Science
Phone 1-800-241-6401 - Iowa State University: Animal Science

... Services Agency; vocational agriculture teachers; local representatives of planning boards, sanitation departments, and State and county highway departments; agricultural product dealers; and State and local geologists. (d) Assembly of Equipment. (1) The kinds and use of equipment are discussed in C ...
< 1 ... 5 6 7 8 9 10 11 12 13 ... 58 >

Terra preta

Terra preta (Portuguese pronunciation: [ˈtɛʁɐ ˈpɾetɐ], locally [ˈtɛhɐ ˈpɾetɐ], literally ""black earth"" or ""black land"" in Portuguese) is a type of very dark, fertile anthropogenic soil found in the Amazon Basin. Terra preta owes its name to its very high charcoal content, and was made by adding a mixture of charcoal, bone, and manure to the otherwise relatively infertile Amazonian soil. It is very stable and remains in the soil for thousands of years. It is also known as ""Amazonian dark earth"" or ""Indian black earth"". In Portuguese its full name is terra preta do índio or terra preta de índio (""black earth of the Indian"", ""Indians' black earth""). Terra mulata (""mulatto earth"") is lighter or brownish in colour.Terra preta is characterized by the presence of low-temperature charcoal in high concentrations; of high quantities of pottery sherds; of organic matter such as plant residues, animal feces, fish and animal bones and other material; and of nutrients such as nitrogen (N), phosphorus (P), calcium (Ca), zinc (Zn), manganese (Mn). It also shows high levels of microorganic activities and other specific characteristics within its particular ecosystem. It is less prone to nutrient leaching, which is a major problem in most rain forests. Terra preta zones are generally surrounded by terra comum ([ˈtɛhɐ koˈmũ] or [ˈtɛhɐ kuˈmũ]), or ""common soil""; these are infertile soils, mainly acrisols, but also ferralsols and arenosols.Terra preta soils are of pre-Columbian nature and were created by humans between 450 BC and AD 950. The soil's depth can reach 2 meters (6.6 ft). Thousands of years after its creation it has been reported to regenerate itself at the rate of 1 centimeter (0.39 in) per year by the local farmers and caboclos in Brazil's Amazonian basin, who seek it for use and for sale as valuable potting soil.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report