Soil Organic Matter Quality From Soils Cropped by Traditional Peasants
نویسندگان
چکیده
منابع مشابه
Soil Organic Matter Quality From Soils Cropped by Traditional Peasants
In this work we have analyzed soil samples from Oxisols collected from two traditional communities, one formed by Guarany Indians at South of Brazil and other by African descendants on North of Rio de Janeiro State, Brazil. The content and fractional composition of humus was investigated and the isolated humic acids (HAs) were characterized by elemental composition, C solid-state nuclear magnet...
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The rates of extraetíon of Na, K, Mg, Ca, and Al with 1 M NH. NO. from the mineraIand organic-rieh layers of sorne Park Grass (Rothamsted) soils were measured at the pH of the soil. Below pH 3.7 exehangeable Al, deríved from the kineties curve, inereases with decreasing soil pH and is less in the organic-rich Iayer. The sum of the basic exchangeable eations, I;(Na + K + Mg + Ca), increases with...
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ژورنال
عنوان ژورنال: Sustainable Agriculture Research
سال: 2014
ISSN: 1927-0518,1927-050X
DOI: 10.5539/sar.v3n4p63