This two-volume set discusses recent approaches and technological innovations for sustainable agriculture in smallholder farming systems impacted by climate change. The systems covered include crop-based agricultural production, as well as aquaculture and livestock production as related systems using similar techniques to combat food security issues brought about by climate change and resource overuse. The chapters detail innovations involving crop diversification, soil resilience management, geoinformatics and land suitability monitoring for smart farming, information technology in livestock production, and nutrient resource management in fishery aquaculture. Researchers, practitioners and industries will be able to use this information to implement socially and economically sustainable practices to achieve food security in impoverished areas vulnerable to climate change, while also learning about the rapid evolution in information technology that is applicable for and available to small holder farmers. Volume 2 focuses on trends and technologies in food security within the context of sustainable practices, drone technology, microwave data, molecular farming, machine learning, agricultural economics, spatial modeling and agricultural policy. These chapters discuss advancements in fishery resource and aquaculture practices, and also the challenges facing these areas due to climate change.