Biotechnology for Sustainable Agriculture and Crop Productivity: A Review

The global challenge of feeding a rapidly growing population whilst simultaneously addressing environmental degradation, climate change, and the depletion of natural resources demands transformative approaches to agricultural production. Agricultural biotechnology has emerged as a powerful suite of tools capable of enhancing crop productivity, improving resilience against biotic and abiotic stresses, and reducing the ecological footprint of farming systems. This review provides a comprehensive synthesis of major biotechnological advances relevant to sustainable agriculture, encompassing genetic engineering, CRISPR-Cas9-mediated genome editing, RNA interference, marker-assisted selection, and the application of biofertilisers and biopesticides derived from microbial biotechnology. The literature search was conducted across four major academic databases: Web of Science, Scopus, PubMed, and Google Scholar. The date range for the primary search was set since January 2007, to ensure a minimum of fifteen references from within this recent period. The review examines how these technologies contribute to drought tolerance, disease resistance, nitrogen use efficiency, improved photosynthetic capacity, and nutritional enhancement of staple crops. Socio-regulatory dimensions—including international regulatory frameworks, biosafety considerations, and ethical debates surrounding genetically modified organisms—are critically examined. Despite remarkable scientific progress, significant challenges remain, including regulatory complexity, public acceptance, equitable access, and the need for integration with traditional breeding systems and agroecological approaches. This review concludes that a measured, evidence-based deployment of biotechnological innovations, within inclusive governance structures, offers substantial promise for achieving food security and sustainable agricultural development in the twenty-first century.