Crop loss and insufficient yield are two important issues faced by farmers. A major cause of both of these issues is unhealthy soil. Various technological means have been tested and used for purifying soil and making it healthy. However, they are expensive and often unfriendly to the environment. This new book explores sustainable means of soil improvement through the promising use of nano-biochar and nanoparticles for improving soil quality as well as for reducing waste. The book discusses how nano-biochar can improve soil quality and sustainability and explores the various types of nanoparticles and approaches for improving soil health. Chapters present research on how nanoparticles and nano-biochar can reduce salinity stress, improve soil physiochemical properties, and improve intrinsic soil characteristics.