Coconut

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Browsing Coconut by Subject "A. mangium"

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    Litter decomposition of Acacia auriculiformis Cunn. Ex Benth. and Acacia mangium Willd. under coconut trees on quaternary sandy soils in Ivory Coast
    (Springer-Verlag, 2006-10) Ngoran, A.; Zakra, N.; Ballo, K.; Kouame, C.; Zapata, F.; Hofman, G.; Cleemput, O.
    Litter Decomposition of acacia Auriculiformis and acacia Mangium on Sandy Soil under Coconut Trees was Studied in a Field Trial Using the Litterbag Technique. The Study was Conducted during 2001 and 2002 in Ivory Coast. Litterbags Containing 450 G of Dried Leaves and 450 G of Dried Small Stems were Set up in Two Coconut Plantations of Different Ages, 3 and 20 Years Old. Dry Matter Weight and Concentrations of Total Nitrogen (n), Phosphorus (p), Potassium (k), Magnesium (mg), and C/n Ratio were Determined at 90, 180, 270, and 360 Days. The Decomposition Rate Constant (k) and the Half-life Time Decomposition of Dry Matter (t 1/2) were Calculated. The Study Showed that a. Auriculiformis and a. Mangium have the same Rate of Decomposition on each Coconut Plantation. The k Value Varied from -1.592 Day-1 to -1.492 Day-1. The Half-life Time Decomposition Value of Dry Matter (t 1/2) Ranged from 283 to 301 Days. Nitrogen was Released between 0 and 180 Days with an N Concentration for a. Auriculiformis and a. Mangium Varying from 2.03 To 1.80% And 1.97 To 1.79%, Respectively. After 180 Days, the Litters Immobilized N. Phosphorus and Mg were Released Faster from a. Mangium than from a. Auriculiformis. A Positive Correlation was Found between the N Concentration of each acacia Species and the Litter Dry Weight at 90 and 180 Days. Likewise, C/n Ratio was Positively Correlated with Litter Dry Weight at 90 Days.