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Using the wild sunflower, tithonia, in Kenya

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One of the most popular agroforestry practices in the highlands of Kenya is to use traditional hedges to demarcate both external and internal boundaries of farms and compounds. These hedges also protect soil and crops as well as producing fodder green manure and mulch. Among the most common species found in them are Tithonia diversifolia Lantana camara Thevetia eruuiana and Croton megalocarpus. Some species such as tithonia and lantana produce large quantities of biomass which farmers do not fully utilize as green manure. Yet the major constraint to high crop productivity in Kenya is declining soil fertility. In particular the soils are deficient in nitrogen and phosphorus.

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