Nutrients (P, K and Na) leaching from leaf litter of Dalbergia sissoo (Roxb.)
Nutrients (P, K and Na) leaching from leaf litter of Dalbergia sissoo (Roxb.)
Hasanuzzaman, Md., H. Mahmood, H.L. Sharif and Md. N. Islam
ABSTRACT
Dalbergia sissoo (Roxb.) is best known as a premier timber species of the rosewood genus. This species deserves greater consideration for agroforestry applications for its multiple uses, tolerance to light, frosts and long dry seasons. Nutrients (P, K and Na) leaching from leaf litter of D. sissoo were studied in the laboratory. About 20% of initial weight of leaf litter was lost, while conductivity and TDS (Total Dissolved Solid) of leached water increased to 239 µS/cm and 114 mg/l, respectively and pH decreased to 5.81 after 96 hours. Weight loss (%) of leaf litter, conductivity and TDS of leached water showed significant (NAOVA, p<0.05) curvilinear relationship with leaching time. During the leaching process, 71%, 75% and 36% of initial concentration of P, K and Na in leaf litter were decreased, respectively after 24 hours and they showed significant (NAOVA, p<0.05) negative curvilinear relationship with the leaching time.
Keywords: Dalbergia sissoo, Leaching, Nutrients, Weight loss.
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March 2006
Vol. 56, Iss. 1
