Long-term effects of fallow, tillage and manure application on soil organic matter and nitrogen fractions and on sorghum yield under Sudano-Sahelian conditions

A. Mando, B. Ouattara, A.E. Somado, M.C.S. Wopereis, L. Stroosnijder, H. Breman

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27 Citations (Scopus)

Abstract

Soil organic matter (SOM) controls the physical, chemical and biological properties of soil and is a key factor in soil productivity. Data on SOM quantity and quality are therefore important for agricultural sustainability. In 1990, an experiment was set up at Saria, Burkina Faso on a sandy loam Lixisol to evaluate long-term effects of tillage (hand hoeing or oxen ploughing) with or without 10 t ha-1 yr-1 of manure and fallowing on SOM and N concentrations and their distribution in particle size fractions. The field was sown annually to sorghum (Sorghum bicolor [L.] Moench). Ten years later, total organic C and total N, SOM fractions and their N concentrations, and sorghum yield were determined. Continuous sorghum cultivation without organic inputs caused significant losses of C and N in the hoed and ploughed plots. However, addition of manure to hoed plots was effective in maintaining similar levels of C and N to fallow plots. Without manure, SOM was mainly stored in the size-fraction
Original languageEnglish
Pages (from-to)25-31
JournalSoil Use and Management
Volume21
Issue number1
DOIs
Publication statusPublished - 2005

Keywords

  • land-use
  • management
  • carbon
  • dynamics
  • systems

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