Results 261 to 270 of about 32,936 (303)

The Fixation of Phosphorus by Soils

1957
Publisher Summary Phosphorus fixation was first recognized in Europe around 1850, when it was reported that soil had the ability to “retain” phosphorus. Similar reports appeared in the United States shortly after 1900. However, in spite of this early recognition, the greatest strides in understanding the basic chemistry of this phenomenon and how to ...
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Quenching the High Phosphorus Fixation of Hawaiian Latosols

Soil Science Society of America Journal, 1966
Abstract Hawaii aluminous‐ferruginous latosols are severely deficient in total and available phosphorus and have very high phosphorus fixation capacities. This severely limits croup production. Results of 6‐year field experimentation indicate that the problem of phosphorus fixation and low yields can be overcome by a heavy initial ...
O. R. Younge, D. L. Plucknett
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Determination of Phosphorus Fixation Capacity in Organic Soil

Soil Science Society of America Journal, 1962
Abstract In a study of 15 organic soils the reduction in phosphorus concentration in aqueous solutions shaken with the soils gave a good indication of their phosphorus fixation capacities. An equally good indicator in soils that had had prior phosphorus fertilization was the level of water‐extractable phosphorus. Total iron, aluminum,
C. I. Harris, G. F. Warren
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Phosphorus Fixation in Mangrove Swamp Muds

Nature, 1962
IT is generally accepted that much of the beneficial effect of phosphate applied to soils is due to fixation of aluminium. During a recent examination of mud from a mangrove swamp in Sierra Leone it was found that despite a high (5 per cent) dilute acid-extractable aluminium content, there was practically no aluminium-bound phosphorus.
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Phosphorus limitation on nitrogen fixation by Facaltaria seedlings

Forest Ecology and Management, 2003
The growth of nitrogen-fixing trees is often limited by the available supply of phosphorus (P) in the soil, and any factor limiting growth may also limit rates of N fixation. We examined the effect of additions of N and P fertilizer on rates of growth and N fixation of seedlings of Facaltaria moluccana (Miquel) Barneby and Grimes, using soils from 18 ...
Dan Binkley, Randy Senock, Kermit Cromack   +2 more
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Phosphorus limitation of nitrogen fixation by Trichodesmium in the central Atlantic Ocean

Nature, 2001
Marine fixation of atmospheric nitrogen is believed to be an important source of biologically useful nitrogen to ocean surface waters, stimulating productivity of phytoplankton and so influencing the global carbon cycle. The majority of nitrogen fixation in tropical waters is carried out by the marine cyanobacterium Trichodesmium, which supplies more ...
Raven, John, Capone, Douglas G., Carpenter, Edward J., Hutchins, David A., Sanudo-Wilhelmy, Sergio A., Kustka, Adam B., Gobler, Christopher J., Yang, Min, Lwiza, Kamazima, Burn, James   +9 more
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Relative Movement and Soil Fixation of Soluble Organic and Inorganic Phosphorus

Journal of Environmental Quality, 2005
ABSTRACTThere is considerable concern about pollution of surface waters with P. Although most of the research has focused on inorganic P in surface runoff, it has recently become possible to easily follow the fate of soluble organic P forms in soils and waters.
Brandon H, Anderson, Frederick R, Magdoff   +1 more
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The connection of the phosphorus cycle to diazotrophs and nitrogen fixation

2015
Nitrogen (N2) fixation is an important component of the marine nitrogen (N) cycle, as it provides a major source of new N to the oligotrophic ocean, which often N limited. This input could increase global N inventories, leading to the sequestration of atmospheric CO2 via the biological pump. Any changes in N2 fixation can therefore theoretically change
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Phosphorus fixation characteristics of Valley Mine tailings

2009
Phosphorus is often a limiting plant nutrient and, when applied as fertilizer, may be "fixed" in forms unavailable to plants. Thus an understanding of phosphorus behaviour in mine tailings is important to any reclamation program. Phosphorus adsorption isotherms were constructed for three copper mine tailing materials, one of which had been subjected to
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PHOSPHORUS FIXATION AND PROFITABLE FERTILIZATION

Soil Science, 1967
G. F. GRIFFIN, W. J. HANNA
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