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  • Acacia mangium  (2)
  • Agroforestry  (1)
  • 1
    Digitale Medien
    Digitale Medien
    Modelling agroforestry systems of cacao (Theobroma cacao) with laurel (Cordia alliodora) or poro (Erythrina poeppigiana) in Costa Rica (1990)
    Springer
    Agroforestry systems 12 (1990), S. 229-249 
    Details
    ISSN: 1572-9680
    Schlagwort(e): Agroforestry ; biomass ; cocoa yield ; Cordia alliodora ; Erythrina poeppigiana ; litter production ; organic material ; shade trees ; sustainability ; timber production ; Theobroma cacao
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Abstract Predictive models were developed for Cordia alliodora branch and Theobroma cacao branch or leaf biomass,based on branch basal areas (r2 ⩾ 0.79) but the model of C. alliodora leaf biomass, although significant, was of very low accuracy (r2 = 0.09) due to annual leaf fall. At age 10 years, shade tree stem biomass accounted for 80% of the total above-ground biomass of either tree. However, between the ages of 6 and 10 years, the biomass increment of T. cacao branches (3–4t.ha−1.a−1) was similar to that of the shade tree stems. During the same period, the net primary productivity was 35 and 28 t.ha−1.a−1, for the Erythrina poepigiana and and C. alliodora systems, respectively. Cocoa production under either of the shade trees C. alliodora or E. poeppigiana was 1000 kg.ha−1.a−1 (oven-dry; ages 6–10 yr). During the same period, C. alliodora timber production was 9 m3.ha−1.a−1 whilst the leguminous shade tree E. poeppigiana does not produce timber. Litterfall over the same 5 years, including crop and/or shade tree pruning residues, averages 11 and 23 t.ha−1.a−1, respectively. The main difference was due to E. poeppigiana pruning residues (10t.ha−1.a−1). Soil organic material reserves (0–45 cm) increased over 10 years from 198 to 240 t.ha−1 in the E. poeppigiana plots and from 168–184 t.ha−1 in the C. alliodora plots. These values, together with the productivity indices presented, provide evidence that the systems are sustainable. For economic reasons, the use of C. alliodora is recommended under the experimental conditions. however, on less fertile soils without fertilization, the greater biomass and hence nutrient return to the soil surface under E. poeppigiana, might make this the preferable shade tree.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00137286
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    A comparison of agrisilvicultural systems with plantation forestry in the Atlantic Lowlands of Costa Rica (1995)
    Springer
    Agroforestry systems 32 (1995), S. 207-223 
    Details
    ISSN: 1572-9680
    Schlagwort(e): tree increment ; pests and diseases ; Acacia mangium ; Cordia alliodosa ; Costa Rica
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Abstract Survival and growth data (ages 0–5 years) are presented for two timber species (Acacia mangium, Cordia alliodora) planted in monocultures or in association with a sequence of agricultural cropsZea mays, Zingiber officinale andEugenia stipitata (a fruit shrub) in the tropical humid Caribbean lowlands of Costa Rica. Average annual height and diameter growth rates were 3.2 m and 4.0 cm (C. alliodora), 3.5 m and 3.8 cm (A. mangium).C. alliodora associated with crops gave the greatest productivity with an average total stem volume increment of 19 m3 ha−1 yr−1. Root rot ofA. mangium (mainlyRosellinia sp.), leading to tree mortality, was greater in pure plots compared to associated plots.A. mangium can not be recommended for similar sites because of this problem.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00711710
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  • 3
    Digitale Medien
    Digitale Medien
    Species and site selection for timber production on farm boundaries in the humid Atlantic Lowlands of Costa Rica and Panama (1996)
    Springer
    Agroforestry systems 35 (1996), S. 139-154 
    Details
    ISSN: 1572-9680
    Schlagwort(e): Acacia mangium ; Cordia alliodora ; Eucalyptus deglupta ; on-farm experimentation ; Tectona grandis ; Terminalia ivorensis
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Abstract In 1987–89 the CATIE-GTZ Agroforestry Project set up experiments with five timber tree species planted in single lines on twelve farm boundaries in cooperation with local farmers. When the trees were five years old, their height, diameter and total stem volume were: Acacia mangium 17 m, 19 cm and 67 m3 km−1, Cordia alliodora 14 m, 20 cm and 46 m3 km−1, Eucalyptus deglupta 22 m, 24 cm and 85 m3 km−1, Tectona grandis 17 m, 20 m and 64 m3 km−1, Terminalia ivorensis 18 m, 23 cm and 104 m3 km−1. Considering these excellent growth rates, planting of Cordia alliodora, Eucalyptus deglupta and Tectona grandis in lines on farm boundaries should be promoted. T. ivorensis and A. mangium are not recommendable for sites with impeded drainage because of mortality caused by root rot, mostly due to Rosellinia sp.
    Materialart: Digitale Medien
    URL: http://dx.doi.org/10.1007/BF00122775
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