Evaluation of 19 provenances of Calliandra calothyrsus at Gairo and SUA Farm, Morogoro,Tanzania

Abstract

Performance evaluation was conducted among nineteen provenances of Calliandra calothyrsus from mesa-America, Indonesia and Tanzania. Two trials were established in February and March, 1996 at Gairo (8 provenances) and Sokoine University of Agriculture (SUA) Farm (17 provenances) in Morogoro, Tanzania. Assessment was carried out at 3, 6, 14, 27, and 41 months for survival, root collar diameter and height. Biomass production was assessed during the last assessment occasion at SUA Farm (27 months after planting) and for Gairo at 27 and 41 months after planting respectively. At 27 months, when final assessment was done at SUA Farm, survival ranged from 33.3% (Lushoto Arboretum and Babati provenances) to 91.7% (Gracie Rock provenance). Above ground biomass production ranged from 4.81 to 17.26 tiha for provenances Lushoto Arboretum and San Ramon respectively. When final assessment was done at Gairo site 41 months after planting, survival ranged from 50% for A pic Apac provenance to 75.0% for Fortuna and Cofradia provenances. Above ground biomass production ranged from 12.60 to 22.35 tJ ha for A pic Apac and Fortuna provenances respectively. Analysis ofleaf sam pies showed low variation in Nand P leaf contents for the provenances studied (ranges 1.35-2.50 N% and 0.09-0.18 P%). Based on the findings from this study, provenances Union Juarez, San Ramon, Bandug, Bombana and Flores are recommended for the SUA farm site and Fortuna, Cofradia, Bandung and San Miguel for the Gairo site.