Results 101 to 110 of about 297 (128)

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

Chapter 8 Ultisols

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.
openaire   +1 more source

Fluxes of dissolved organic carbon and nitrogen in cropland and adjacent forests in a clay-rich Ultisol of Thailand and a sandy Ultisol of Indonesia

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, Shinya Funakawa, Chie Hayakawa, null Sukartiningsih, Takashi Kosaki   +4 more
openaire   +1 more source