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Terra preta (Portuguese pronunciation: [ˈtɛʁɐ ˈpɾetɐ], literally "black soil" in Portuguese) is a type of very dark, fertile anthropogenic soil (anthrosol) found in the Amazon Basin. 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 ...
Fuller's earth. Fuller's earth is a term for various clays used as an absorbent, filter, or bleaching agent. Products labeled fuller's earth typically consist of palygorskite (also known as attapulgite) or bentonite. [1] Primary modern uses include as absorbents for oil, grease, and animal waste (cat litter), and as a carrier for pesticides and ...
Synthetic repellents tend to be more effective and/or longer lasting than "natural" repellents. [1] [2]For protection against mosquito bites, the U.S. Centers for Disease Control (CDC) recommends DEET, icaridin (picaridin, KBR 3023), oil of lemon eucalyptus (para-menthane-diol or PMD), IR3535 and 2-undecanone with the caveat that higher percentages of the active ingredient provide longer ...
A sticky, gummy, icky black clay soil that gives you “big feet” when it rains and that becomes adobe-hard when it dries. Believe it or not, that clay soil isn’t as bad as you might imagine.
Ochre. Ochre (/ ˈoʊkər / OH-kər; from Ancient Greek ὤχρα (ṓkhra), from ὠχρός (ōkhrós) 'pale'), iron ochre, or ocher in American English, is a natural clay earth pigment, a mixture of ferric oxide and varying amounts of clay and sand. [1] It ranges in colour from yellow to deep orange or brown. It is also the name of the ...
Chernozem (/ ˈtʃɜːrnəzɛm / 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 moisture ...
The plaster can be applied in three coats, this is the Spanish process known as 'alisando'. The first layer is the scratch coat which provides adherence for the second layer the brown coat or levelling coat. The final layer is the color coat or finishing coat. This layer is usually clay with sand but without fiber.
Barro negro pottery ("black clay") is a style of pottery from Oaxaca, Mexico, distinguished by its color, sheen and unique designs. Oaxaca is one of few Mexican states which is characterized by the continuance of its ancestral crafts, which are still used in everyday life. [1] Barro negro is one of several pottery traditions in the state, which ...