This study was conducted to develop and evaluate crop diversification models in agroforestry farming of Arabica coffee (Coffea Arabica L.) in Northwest Vietnam. The main activities included: (I) Experiments to assess the adaptability of Arabica coffee varieties under intercropping with shade trees; (II) Experiments with several crop diversification systems in a coffee-macadamia intercropping model in Dien Bien; and (III) Developing an agroforestry model combining coffee intercropping with black olive, gáo, hông, and Lê VH6 trees in Son La. The results showed that the use of shade trees helped minimize the impact of frost and improve the potential yield indicators of Arabica coffee varieties. Coffee plants thrived in the coffee-macadamia intercropping model, with coffee yields in the agroforestry model reaching 6.4 - 8.6 tons of fresh fruit/ha. However, some intercropping has not yielded high productivity and economic efficiency due to inappropriate planting seasons and techniques. Therefore, further research on longer-term models is needed to comprehensively assess the effectiveness of applying agroforestry and crop diversification to Arabica coffee cultivation in the locality.
