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1
Soil Aggregate and Organic Matter Dynamics in Reclaimed ...
Macroaggregate C in shrub site soils reached concentrations higher (46.16 g C
kg-1 sand free aggregate) than under grasses (41.33 g C kg-1 sand free
aggregate) after 16 years of reclamation (Figure 2.2a). Shrub site soils also had a
higher ...
2
Interactions Between Soil Particles and Microorganisms: ...
The free POM becomes occluded within a new macroaggregate. For POM
derived from roots or mycorrhizal fungi, the stabilization may have been initiated
by an adherence of soil particles to mucilage released as the roots and fungi
grew in ...
Pan Ming Huang, J.-M. Bollag, Nicola Senesi, 2002
3
Issues in Life Sciences—Botany and Plant Biology Research: ...
We collected soil samples from adjacent grassland, cropland, and shrubland
plots 27 years later and measured OC concentrations in the macroaggregate (>
; 0.25 mm), microaggregate (0.25-0.053 mm) and silt+clay (< 0.053 mm)
fractions.
4
Structure and Organic Matter Storage in Agricultural Soils
The additional organic matter held in these soils is mainly inter- macroaggregate
material which has been deposited within macroaggregates and is involved in
maintaining their integrity and stability. It consists of a wide range of organic ...
M.R. Carter, Bobby A. Stewart, 1995
5
Exploring Mechanisms by which Organic and Mineral Nutrient ...
It has been shown that macroaggregate stability and macroaggregate associated
SOM are more sensitive and respond faster to management practices than
microaggregate stability associated SOM (Elliott, 1986; Six et al., 2000a; Tisdall
and ...
Pauline Paidamoyo Chivenge-Nhamo, 2008
6
Photosynthesis: Mechanisms and Effects
After further aggregation, the trimer was transformed into a macroaggregate,
consisting of several dozen or even hundreds of LHC II molecules. Its low
temperature fluorescence at ~681nm (F68i) was greatly quenched by about 90%,
while a ...
7
Cover Cropping for Vegetable Production: A Grower's Handbook
Within a macroaggregate, microaggregates can form through the interaction of
other forces that operate at a smaller spatial scale. Polyvalent cations are
positively charged ions with the capacity for multiple charges. Calcium, for
example, can ...
Richard Smith (University of California Cooperative Extension Advisor), Robert L. Bugg , Mark Gaskell, 2011
8
Innovations as Key to the Green Revolution in Africa: ...
Even in the microaggregate within macroaggregate fraction, which is the most
sensitive fraction to C changes (Denef et al. 2004; Kong et al. 2005), residue
quality did not affect C and N stabilization. Therefore, residue quality appears to
have ...
Andre Bationo, Boaz Waswa, Jeremiah M. Okeyo, 2011
9
Agrochemicals: Advances in Research and Application: 2011 ...
Four aggregate fractions, i.e., large macroaggregate (> 2,000 A mu m), small
macroaggregate (250-2,000 A mu m), microaggregate (53-250 A mu m) and silt +
clay fraction (< 53 A mu m), respectively, were obtained by wet sieving. SOC and
...
10
Sustainable Land Management for the Oxisols of the Latin ...
After <1 min circulation, over 50% of soil from all land-use systems was in the
macroaggregate fraction. After 10 min of circulation, the macroaggregate fraction
decreased to about 30% and the microaggregate and primary particle fraction ...
Richard James Thomas, Miguel A. Ayarza, 1999
