Download Advances in Agronomy, Vol. 125 by Donald L. Sparks PDF

By Donald L. Sparks

ISBN-10: 0128001372

ISBN-13: 9780128001370

Advances in Agronomy is still well-known as a number one reference and a main resource for the newest examine in agronomy. As regularly, the themes coated are diversified and exemplary of the myriad of subject material handled by way of this long-running serial.

  • Maintains the top impression issue between serial courses in agriculture
  • Presents well timed reports on vital agronomy matters
  • Enjoys a long-standing attractiveness for excellence within the field

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1 Ferrihydrite with freshly sorbed phosphate Iron (III) oxides are ubiquitous in near-surface soils and sediments and interact strongly with dissolved Pi via sorption, coprecipitation, mineral transformation, and redox cycling reactions. Iron oxide phases are thus an important reservoir for dissolved Pi, and Pi bound to iron oxides may reflect dissolved Pi sources as well as carry a history of the biogeochemical cycling of P. In a recent experimental study, Jaisi et al. (2010) reconfirmed that PdO bonds are very robust and do not break or alter during sorption/desorption of Pi to/from Fe-oxides and do not exchange O with ambient water, but rather entire PO4 ions (irrespective of 18O or 16O or the different combinations of 18O and 16O in PO4) are adsorbed or desorbed intact.

2011a; Liang, 2005). Application of d18Op values to track sources of P in aquatic environments such as rivers and inlets to major water bodies has been recently reviewed in detail by Paytan and McLaughlin (2011). 42 Deb P. Jaisi and Ruth E. 13 d18Op composition of Pi pools in soil and plants: blue, green, yellow, and red symbols represent d18Op values of mineral, vegetation, (bio)available, and microbial Pi pools, respectively. , 2012). 7. CONCLUDING REMARKS AND PERSPECTIVES The element P is a key ingredient for fertilizers and there is no other substitute for P in sustaining life and food production.

Technol. 40, 7874–7880. , 1981. Oxygen isotope fractionation factors between anhydrite and water from 100-degrees-c to 550-degrees-c. Earth Plan. Sci. Lett. 53, 55–62. , 1998. Marine phosphorus is selectively remineralized. Nature 393, 426. , 1999. Marine organic phosphorus cycling: novel insights from nuclear magnetic resonance. Am. J. Sci. 299, 724–737. , 1990. Clay mineralogy of Cenozoic sediments from the Peruvian continental margin: Leg 112. In: Proc. ODP Sci. proc. 1990. , 1963. The use of bromine pentaflouride in the extraction of oxygen from oxides and silicates for isotopic analysis.

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