Results 121 to 130 of about 1,827 (176)

Sistemas agropastoriles: un enfoque integrado para el manejo sostenible de oxisoles de los Llanos Orientales de Colombia

, 2015
Amézquita Collazos, Edgar, Bernal Riobo, Jaime Humberto, Corrales, I.I., Rao, Idupulapati M., Rivera, M.   +4 more
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El reciclaje de nutrimentos en pastos tropicales [PDF]

, 2015
Salinas, José G., Spain, James M.
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Proyecto colaborativo de mejoramiento de arroz IDIAP/FAUP/CIAT [PDF]

, 2016
Espinosa, Ezequiel, Gaona B., Jaime, Gutiérrez, Hernán, Jaén Sánchez, Ariel Eric, Jonas, Jorge, Lezcano, Samuel, Martínez Racines, César Pompilio   +6 more
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Charge characteristics and exchangeable cation status of Korean Ultisols and Alfisols and Thai Ultisols and Oxisols

Journal of Soil Science, 1985
SUMMARY The charge characteristics of A 1 or Ap and B 2 horizon samples of total 23 Ultisols, Alfisols and Oxisols in Korea and Thailand were studied by measuring the retention of NH 4 +
S.‐I. WADA, K. WADA
openaire   +1 more source

FERTILIZATION OF ARRACACHA IN AN ULTISOL

The Journal of Agriculture of the University of Puerto Rico, 1995
FERTILIZATION OF ARRACACHA IN AN ...
null R. del Valle, null Carlos E. Ortiz, null M. A. Santiago   +2 more
openaire   +1 more source

Water and Cation Movement in an Indonesian Ultisol

Agronomy Journal, 1997
AbstractLime 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, Lalit M. Arya, Russell S. Yost   +2 more
openaire   +1 more source

Oxisols and Ultisols

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, Zeng-Yei Hseu, Chen-Chi Tsai   +2 more
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Sulfate Retention by an Acid BE Horizon of an Ultisol

Soil Science Society of America Journal, 1985
Abstract Many apparently conflicting reports on sulfate (SO 2‐ 4 ) retention by soils suggest that a single, inclusive mechanism may not be adequate in explaining SO 2‐ 4 ‐soil reactions and that
N. V. Hue, Fred Adams, C. E. Evans
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The effects of liming on an ultisol in Northern Zambia

Communications in Soil Science and Plant Analysis, 1988
Abstract Only a few reports have been made on long‐term liming experiments on Ultisols and Oxisols in Africa. This series of experiments on an Ultisol in northern Zambia, beginning in 1978, were used to measure the effects of liming with continuous cultivation in an area which receives about 1200 mm annual rainfall in a 7‐month period.
R.C. McKenzie, D.C. Penney, L.W. Hodgins, B.S. Aulakb, H. Ukrainetz   +4 more
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Nutrient leaching in an Ultisol cultivated with sugarcane

Agricultural Water Management, 2015
Abstract 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, P.L. Libardi, P.C.O. Trivelin   +2 more
openaire   +1 more source