Book excerpt: The present book “Bioinformatics in Agriculture and Allied Sectors” contains 26 chapters including some fundamental chapters of soil informatics, proteomics, sequence alignment, homology modeling, drug designing and bioinformatics application in aquaculture and avian sectors. Efforts were given to make this book in a simplified way for well understanding and to make very useful for the students, scientists and professionals engaged in research and development of bioinformatics education.