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International Journal of Soil Science
  Year: 2010 | Volume: 5 | Issue: 1 | Page No.: 1-10
DOI: 10.3923/ijss.2010.1.10
 
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Soil Organic Matter Fractions and Aggregate Distribution In Response to Tall Fescue Stands
I.P. Handayani, M.S. Coyne and R.S. Tokosh

Abstract:
The study was conducted to evaluate the influences of tall fescue management on soil organic matter fractions and macro- and microaggregate distribution. Soil samples were collected from four paired adjacent fields consisting of five years of tall fescue mono and poly stands in Western Kentucky. Soil samples from 0 to 15 cm and 15 to 30 cm soil depths were analyzed for soil organic C and N, particulate organic matter C (POM-C) and N (POM-N), macro- and micro aggregate distribution and C-associated with macro- and micro- aggregates. Significant effects were observed between stands for all the properties, except total C, microaggregates and C-associated with microaggregates. Sampling depth significantly influenced total C and N in both stands. Particulate organic matter C and N and C-associated with macroaggregates and the amount of macroaggregates were strongly affected by tall fescue management. This confirmed the hypothesis that early changes in soil properties were reflected in labile C and N fractions and soil structure. Tall fescue mixture stands had 44% higher POM-C, 50% higher POM-N, 26% more macroaggregates and 33% more C-associated with macroaggregates compared to the tall fescue mono stands at the soil surface of 0 to 15 cm.
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How to cite this article:

I.P. Handayani, M.S. Coyne and R.S. Tokosh, 2010. Soil Organic Matter Fractions and Aggregate Distribution In Response to Tall Fescue Stands. International Journal of Soil Science, 5: 1-10.

DOI: 10.3923/ijss.2010.1.10

URL: https://scialert.net/abstract/?doi=ijss.2010.1.10

 
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