Carrot cultivars under organic systems in the Angolan semi-arid region

agronomic performance and implications for family farming

Abstract

Organic vegetable production in semi-arid regions poses technical challenges, particularly due to edaphoclimatic and phytosanitary limitations. This study evaluated the agronomic and economic performance of two carrot cultivars (Kuroda and Dante) under organic management in a rural property in the semi-arid region of Angola. The experiment followed a randomized block design with four replications, using organic fertilization, compost, and biofertilizers. Variables assessed included yield, pest and disease incidence, soil characteristics, and economic return. The Kuroda cultivar achieved higher yield (28.7 t/ha) and net return (USD 3,500/ha), outperforming Dante (23.2 t/ha and USD 2,800/ha), although it was more susceptible to carrot fly and leaf blight. Soil analysis revealed low initial phosphorus levels (12.4 mg/dm³), which required correction with organic inputs. Dante showed greater phytosanitary resistance, which may support its use in low-input farming systems. Results indicate that, even under adverse conditions, organic carrot production is feasible when supported by sustainable practices, proper soil management, and cultivar selection adapted to local conditions.