Informations et ressources scientifiques
sur le développement des zones arides et semi-arides

Accueil du site → Master → Autriche → Importance of Ficus thonningii Blume in soil fertility improvement and animal nutrition in Gondar Zuria, Ethiopia

Universität für Bodenkultur Wien (2008)

Importance of Ficus thonningii Blume in soil fertility improvement and animal nutrition in Gondar Zuria, Ethiopia

Tegegne, Enideg Diress

Titre : Importance of Ficus thonningii Blume in soil fertility improvement and animal nutrition in Gondar Zuria, Ethiopia

Auteur : Tegegne, Enideg Diress

Université de soutenance : Universität für Bodenkultur Wien

Grade : Master of Science in Mountain Forestry 2008

Résumé
In response to existing environmental problems in Ethiopia, Ficus thonningii is becoming an important component of the farming systems in Gondar and Gojjam. We collected information on establishment and socioeconomic importance of this species from Gondar Zuria district by interviewing 45 household heads in three villages. We found that the local people recognized its importance for environmental protection and supplementary dry season animal fodder and they have planted 4-100 trees in their holdings. We also measured the soil chemical parameters in order to know its impacts on crops, where it would integrate with in agroforestry systems. We took 40 soil samples under and outside the canopy of five F. thonningii trees in 0-10 and 10-20 cm soil depths at four points from the base of the trees. The soil samples from underneath and outside the canopy of F. thonningii were analyzed for major elements in the laboratory of the Institute of Forest Ecology at Boku. We compared the carbon, nitrogen and phosphorus content of canopy soils with adjacent open pasture soils. We found 1623.5 and 877 kg N ha-1 respectively under and outside the tree canopy in 0-10 cm soil layer. Similarly, we found 945.5 and 847 kg P ha-1, and 24700 and 16800 kg C ha-1 respectively found under and outside the tree canopy. We measured pH and calculated CEC to identify the influence of canopy trees upon soil chemical characteristics. The average soil pH is 6.99 under the canopy and 7.08 outside canopy in the 0-10 cm. It increases to 7.06 under canopy and 7.12 outside canopy in the 10-20 cm soil depths. The CEC of the soils was greater than 40 mmolc/100g and generally, soils under canopy had higher CEC than the outside canopy soils. The species has no adverse effects on the soil physical and chemical properties. This study suggests that F. thonningii can widely be used for soil fertility maintenance and fodder production by planting it in association with crops and pasture in agroforestry systems.

Présentation

Version intégrale (3,49 Mb)

Page publiée le 16 mars 2019