Results 71 to 80 of about 94 (90)
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1983
Publisher Summary This chapter focuses on the range of characteristics of Ultisols, the nature and variability of the pedogenic processes and the mechanisms responsible for the development of these characteristics, and relationships among different taxa in Soil Taxonomy and the genesis of Ultisols.
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Publisher Summary This chapter focuses on the range of characteristics of Ultisols, the nature and variability of the pedogenic processes and the mechanisms responsible for the development of these characteristics, and relationships among different taxa in Soil Taxonomy and the genesis of Ultisols.
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Soil and Tillage Research, 2013
Abstract In the humid tropics, conversion of forests into croplands has the potential to alter the flux of dissolved organic matter (DOM) and influence C balance and N availability in soil. Sites located on a clay-rich Ultisol in Thailand and a highly acidic and sandy Ultisol in Indonesia were used to quantitatively evaluate effects of land use ...
Kazumichi Fujii +4 more
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Abstract In the humid tropics, conversion of forests into croplands has the potential to alter the flux of dissolved organic matter (DOM) and influence C balance and N availability in soil. Sites located on a clay-rich Ultisol in Thailand and a highly acidic and sandy Ultisol in Indonesia were used to quantitatively evaluate effects of land use ...
Kazumichi Fujii +4 more
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Phosphorus response of sericea lespedeza on a georgia ultisol
Communications in Soil Science and Plant Analysis, 1989Abstract A field study was initiated on a Davidson sandy clay loam, clayey, kaolinitic, thermic Rhodic Paleudult soil in central Georgia in 1982 to evaluate P response of high‐ and low‐tannin sericea lespedeza (Lespedeza cuneata(Dumont) G. Don) cultivars.
R.E. Joost, B.W. Mathews, C.S. Hoveland
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Sources of soil variation in an acid Ultisol of the Philippines
Geoderma, 1995Field-scale variation in soil fertility can be a major source of uneven crop growth on acid soils of the humid tropics, but this has not received much research attention. We used factorial kriging (FKA) to analyze processes causing spatial variation in soil chemical properties (pH, P, K, Na, Ca, Mg, Al) measured at two depths within a single field on ...
A. Dobermann, P. Goovaerts, T. George
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Lime response of tanier in an ultisol of costa rica
Communications in Soil Science and Plant Analysis, 1996Abstract Root crops constitute an important part in the diet of millions of people throughout the Tropics. These crops are produced by subsistence farmers in poor soils where acidity is the most common problem and liming materials, such as limestone, are scarce and expensive.
R. Salas, E. Molina, D. Bouldin
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Intergradient Vermiculite-Kaolin Mineral in a Korean Ultisol
Clays and Clay Minerals, 1983AbstractA 14-Å mineral coexisting with kaolin minerals, mica, and gibbsite in a Korean Ultisol and showing X-ray powder diffraction features of “chloritized” vermiculite was studied by a combination of methods. The 14-Å mineral collapsed on saturation with K+ after extraction with hot 1/3 M sodium citrate, but the Si/Al ratio of the extracted material ...
Koij Wada, Yasuko Kakuto
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Productivity relations of sugarcane with chemical attributes of an Ultisol
2019Técnicas de estatística clássica bem como da geoestatística são ferramentas importantes para correlacionar, linear e espacialmente, a produtividade vegetal com os atributos do solo. Objetivou-se com este trabalho determinar as correlações, lineares e espaciais, entre a produtividade da cana de açúcar e os atributos químicos do solo.
Dalchiavon, Flávio Carlos +5 more
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