This book discusses the development and application of crop microbiome as nanobiofertilizer, nanobiopesticide and nanobiostimulants to address the goal of climate-smart agriculture. Nanomaterials encapsulate beneficial crop microbiomes and delivers pesticidal or nutritive active ingredients in a controlled, targeted and synchronized manner. This offers new opportunities to increase nanobiofertilizer and nanobiostimulant efficacy and efficiency compared to their chemical counterparts. This book aims to guide the readers to discover, assess, and utilize beneficial microbiome and/or their metabolites for augmenting plant growth and development, biocontrol of pests, and bioremediation of contaminated agricultural soil. This book is a reference material for faculties, scientists, and research scholars working in the field of agronomy, agricultural biotechnology, and plant sciences.