Abstract

Bowal, a particular form of land degradation occurs only in tropical regions. This study aims at assessing the perceptions of farmers on the causes and consequences of bowalization and the developed strategies to cope with it in semiarid and sub-humid climate zones in Benin. Data were gathered using semi-structured interviews and questionnaires. Representatives from 279 households of nine ethnic groups in the semiarid zone of Benin (Peulh, Bariba, Dendi, Nagots and Mocolé) and in the sub-humid zone (Fon, Mahi, Holli and Adja) were interviewed. Pearson Chi-square Test was performed to analyze the perceptions on the causes, consequences and coping strategies with bowé in the two climate zones. Simple correspondence analysis was used to evaluate the coping strategies according to the ethnic groups. Bowalization was reported to be induced by non-adapted land use and soil erosion. An increase of farmed land and animal-drawn tillage was more perceived in the semiarid zone as cause of bowalization. Bowalization leads to loss of biodiversity in the two climates zones. Its consequences for the production of crops consist mainly in reducing water retention capacity of the soils, rooting difficulties for crops and increase of soil temperature. Farmers in the semiarid zone have adopted planting of cowpea and groundnut on bowé. Adapted cropping techniques in the semiarid zone consist in using a hoe for manual tillage and weed control. Ethnic groups of both climate zones that depend mainly on livestock herding have to practice transhumance and use food supply for the animals. The Bariba and Dendi in the semiarid zone modified their practices of tillage, weed control, sowing, fertilization, and livestock feeding most. The Mahi, Holli, Fon and Adja of the sub-humid zone mostly reduced their farmland, changed the crops and fields and adopted new off-farms activities. The Peulh mostly practiced transhumance independent from the zone. The type of coping strategies to bowé is dependent on the climate zone and ethnic group.

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