Editorial: Sustainable intensification of smallholder farming systems in Sub-Saharan Africa and South Asia - Abdul Rahman, Nurudeen; Kotu, Bekele Hundie; Tetteh, Francis Marthey; Karikari, Benjamin; Akinseye, Folorunso Mathew; Ansah, Terry; Mutungi, Christopher; Kizito, Fred (Frontiers in Sustainable Food Systems, 2024)