Results 61 to 70 of about 94 (90)

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
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
openaire   +1 more source

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

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
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

Short‐term evolution of phosphorus in an ultisol

Communications in Soil Science and Plant Analysis, 2000
Abstract 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
openaire   +1 more source

Ultisols: Characteristics and Impacts on Society

1997
Publisher 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, F.H. Beinroth, M.E. Sumner, B.T. Kang   +3 more
openaire   +1 more source

Response of okra to sodium nutrition in an Ultisol

Moor Journal of Agricultural Research, 2004
The essentiality of Na to the growth of okra plants in an Ultisol grown in soil culture and treated with Na concentrations of 0, 2, 4, 8, 16 mg/kg of soils as NaCl. was studied. Sodium applied at 8mg/kg of soil increased leaf area and number, plant height, water content dry matter yield and tissue N and K when compared with the control.
Aduayi, EA, Olowoyo, BA
openaire   +2 more sources

Amelioration of an acid ultisol by agricultural by‐products

Land Degradation & Development, 2011
AbstractUltisols are widely distributed in the subtropical regions of China as well as in the world. High acidity of Ultisols limits plant growth and reduces crop yields. Amelioration of an acid Ultisol was investigated by incorporating the residues of canola (Brassica campestris L.), wheat (Triticum aestivum L.), rice (Oryza sativa), corn (Zea mays ...
N. Wang, R.‐K. Xu, J.‐Y. Li
openaire   +1 more source

Geomorphic Relationships of Oxisols and Ultisols on Kauai, Hawaii

Soil Science Society of America Journal, 1974
Abstract A succession of Eutrustox‐Eutrorthox‐Gibbsiorthox‐Gibbsihumox occurring in northeastern Kauai, Hawaii, is shown to be a climosequence. These soils developed synchronously on basic lavas forming one geomorphic surface of Pleistocene age.
F. H. Beinroth, G. Uehara, H. Ikawa
openaire   +1 more source