Measuring The Extent Of Restoration Using Coffea Arabica L. As A Bioassay Plant

This study was undertaken as part of the ongo ing biological restoration efforts atrnthe "Center for Indigenous Trees Propagation and Biodi versity Development in Ethiopia"rn(50·55 Km west of Addis Ababa, 09°01' 188" N; 038~1'566" E). The main objective ofrnthe study was to measure extent of restoration over a degraded landscape usi ng CoJJearnarabica L. as a bioassay plant. In order to measure this, the phrase " Restoration Bioassay"rnwas coined for coffee plants which were established beneath Acacia abysl'inica, CrotonrnmacrostachYlil' and Ellclea divinorum. The trees were regenerated after 5-6 years' ofrnintensive restorat ion acti vi ties. All the vegetat ive and reproductive responses werernquantified on randomly se lected 3 to 5 year·o ld coffee plants. Al so, soil samples from thernsi tes being restored, and those From the non- restoring adjacent areas were collected andrnanalyzed for macro- and micro-n utrients, as well as for texture, moisture, density andrnelect rical conduct ivi ty. Through thi s study, it was found that mean number of nodes,rnleaves, as well as internode lengths were significantly (P

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