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  • 1
    Digitale Medien
    Digitale Medien
    Amsterdam : Elsevier
    Forest Ecology and Management 64 (1994), S. 259-264 
    ISSN: 0378-1127
    Schlagwort(e): Brachystegia spiciformis ; Leaf quality ; Leucaena leucocephala ; Nutrient content ; Sesbania sesban
    Quelle: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Thema: Biologie , Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    Digitale Medien
    Digitale Medien
    Springer
    Agroforestry systems 22 (1993), S. 43-48 
    ISSN: 1572-9680
    Schlagwort(e): cattle ; crop production ; litter ; manure ; soil fertility management ; litter acquisition practices
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Abstract A questionnaire survey of fifty-two small-scale farmers was conducted to elucidate the practices associated with acquisition and use of miombo litter. On average, a household cropped 3.7 ha of land and owned ten head of cattle. Farmers collected, on average, 0.5 t of litter per household per annum with larger amounts collected by those with more cropland and more cattle. Cattle ownership is related to quantities of litter collected and the destination of the collected litter, most of the litter being cured in cattle pens. Farmers with less area of cropland applied greater quantities of litter per hectare of cropland than did farmers with more cropland. On average, five tons per hectare per season of the manure-litter mixture is applied to crop fields with litter contributing, on average, 0.12 t/ha to the mixture. Some crops, particularly maize and fingermillet, are more likely to receive litter than other crops.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 3
    ISSN: 1572-9680
    Schlagwort(e): SCUAF ; computer model ; soil carbon ; soil nitrogen ; miombo ; maize
    Quelle: Springer Online Journal Archives 1860-2000
    Thema: Land- und Forstwirtschaft, Gartenbau, Fischereiwirtschaft, Hauswirtschaft
    Notizen: Abstract ‘Soil Changes Under Agroforestry’ (SCUAF), a computer model designed to predict changes in erosion, soil carbon and soil nitrogen over time within various agroforestry systems and climatic regimes, was assessed using input data from an undisturbed miombo woodland and an adjacent maize field in Zimbabwe. Predicted changes in soil carbon were in a realistic range for both miombo and maize treatments. However, the accuracy of the model may be a reflection of the detail required in its initialisation. Several problematic relationships were found within the model, in particular inconsistent patterns between nitrogen uptake and plant productivity under complex fertilisation simulations and a lack of attenuation of productivity in the simulation of miombo woodland as it approached maturity.
    Materialart: Digitale Medien
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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