Príklady fallow

• Fuel wood from improved fallows on far m may provide a means to conserve the natural vegetation, which is under threat due to deforestation.

• Moreover, sesbania does not coppice, and this means that sesbania fallows have to be re-established after two to three postfallow crops.

• While increasing insect pressures can be controlled through appropriate crop rotations and seasonal fallows, in such societies the dominant constraint is weeds.

• Improved fallows: effects of species interaction on growth and productivity in monoculture and mixed stands.

• The main objective of this paper is to assess the potential of herbaceous legume fallows in improving farm income.

• Herbaceous legume fallows are another form of such fallows.

• The haulm yield of groundnuts after natural fallows was similar to that after calliandra fallows.

• Therefore, for this field type other options have to be pursued to sustain production after shortened fallows.

• Results also hint that mixed fallows would be more effective than single species fallows in nutrient capture.

• An opposite trend was observed in the case of the planted fallows.

• A statistical classification of the fallows was proposed based on shrub phenological course over the two cycles monitored.

• Holo-epiphytes were almost absent in the youngest fallows, whereas hemi-epiphytes, which were mostly represented by aroids, were already substantially present shortly after abandonment.

• The species richness, density and biomass of both holoand hemi-epiphytes increased significantly from young fallows to old fallows and mature forests.

• The age effect was clearer for the hemi-epiphytes, suggesting that species turnover takes places in the ageing fallows.

• Using forest fallows as a source of shade-tolerant timber species may be a viable alternative to regenerating these species in mature forests.