Terra rosa

Merino, E., Banerjee, A. (2008). Terra rosa genesis, imphcations for karst, and eolian dust A geodynamic thread. Journal of Geology, 116, 62-75. 

Terra Rosa. Haematite used as a red glaze pigment. 

According to Church (1901) terra rosa was a synonym for red ochre (. v.) he states that The terra rosa of Italy owes its pinkish red hue to ferric oxide, but it is probably often, if not always, an artificial product Mayer (1991) associates terra rosa exclusively with the term Venetian red (. v.). 

A number of European red-brown soils, terra rosas, and rendzinas were compared by Khan [1959a, b], using spectrographically determined zirconium as an index of translocation. He found the sequence of downward movement of elements to be Fe > A1 > Ti > Si, which suggests a tendency to podzolization. 

Wu Mei (Mume fructus), Wu Bei Zi (Chinensis galla), Ying Su Ke (Papaveris somniferi pericarpium), Qian Shi (Euryalis semen), Rou Dou Kou (Myristicae semen), He Zi (Chebulae fructus), Chi Shi Zhi (Halloysitum rubrum), Lian Zi (Nelumbinis semen), Fu Long Gan (Terra flava usta) and Jin Ying Zi (Rosae laevigatae fructus)... 

Rooting experiments were carried out employing sterilized coarse Terra-Lite" perlite and Hibiscus rosa-sinensis, variety Albo Lacinatus (Anderson s Crepe Pink) wooden canes about 10 to 12 inches long and 0.25 to 0.75 inches in diameter. Fifty canes were employed for each test group. The stocks were dipped (0.037g average of talc mix or about 7 x 10 g of test additive for 0.2% samples) and then inserted into the perlite. The samples were watered with a fine mist spray several times a day as needed and exposed to partial to full sun. 

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