Results 121 to 130 of about 1,853 (151)
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FERTILIZATION OF ARRACACHA IN AN ULTISOL
The Journal of Agriculture of the University of Puerto Rico, 1995FERTILIZATION OF ARRACACHA IN AN ...
null R. del Valle +2 more
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2015
Landscapes associated with Oxisols and Ultisols in Taiwan are stable and old, measured in hundred thousands of years, and the thickness can be up to 5 m. Plinthite may be present resulted from alternative wet and dry cycles by fluctuating water tables.
Zueng-Sang Chen +2 more
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Landscapes associated with Oxisols and Ultisols in Taiwan are stable and old, measured in hundred thousands of years, and the thickness can be up to 5 m. Plinthite may be present resulted from alternative wet and dry cycles by fluctuating water tables.
Zueng-Sang Chen +2 more
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Ultisols: Characteristics and Impacts on Society
1997Publisher Summary This chapter presents a brief overview of Ultisols in terms of their genesis, classification, distribution, and properties. The chapter illustrates crop management systems that have been used for agricultural production on these soils.
L.T. West +3 more
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Nutrient leaching in an Ultisol cultivated with sugarcane
Agricultural Water Management, 2015Abstract Solute leaching below the crop-rooting zone represents not only a valuable loss of nutrients for the plant, but also a potential pollution source of groundwater. The objective of this work was to quantify nutrient-leaching losses at 0.9 m depth in an Ultisol that was cultivated with sugarcane, located in the county of Jaboticabal-SP, Brazil.
P.J. Ghiberto +2 more
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Water and Cation Movement in an Indonesian Ultisol
Agronomy Journal, 1997AbstractLime and fertilizer are required to overcome acidity and soil fertility constraints to crop production in the highly weathered soils of Sitiung, Indonesia. The potential leaching of soil amendments is enhanced by the high annual rainfall of 2750 mm and the low effective cation exchange capacity (ECEC) of these soils.
Thomas S Dierolf +2 more
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Short‐term evolution of phosphorus in an ultisol
Communications in Soil Science and Plant Analysis, 2000Abstract Evolution of residual phosphate was monitored as function of time on an Ultisol without cropping in a field trial at Sembawa Rubber Research Station, South Sumatra, Indonesia. Three treatments were imposed and either triple superphosphate at a rate of 600 kg ha‐1 containing 21.54% phosphorus (P) or lime at the rate of 4.14 tons ha‐1 was ...
D. Budianta, J. Vanderdeelen
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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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FISIOGRAFÍA Y SUELOS DE LA CUENCA DEL ARROYO SOBERBIO, PROVINCIA DE MISIONES
Ciencia del SueloLa cuenca del arroyo Soberbio se ubica en el departamento Guaraní, en el noreste de la provincia de Misiones. Se caracteriza por un clima subtropical perhúmedo, relieve serrano, vegetación de tipo selvática y el afloramiento de coladas basálticas.
Lucas Moretti +5 more
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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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Edge Effects and Spatial Variability in Coastal Plain Ultisols
Southeastern Geographer, 1994Spatial variability of soil types and surface horizon thickness were investigated along a 0.2 km transect near an upland valley side slope in the North Carolina Coastal Plain. Previous studies have shown a variable but systematic pattern of soil properties and surface thickness near such "dry edges." The edge effect model successfully predicts the ...
Jonathan D. Phillips +6 more
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