Eco friendly bio fertilizers can curb the environmental pollution, enhances sustainable agriculture and minimize the use of chemical fertilizers as well as pesticides, over using of the chemical fertilizers and pesticides in agriculture, horticulture or in crop cultivation create many serious constraints such as health hazards, air and water pollution, killing of many beneficial biotas. This book provides comprehensive information and techniques about using of biofertilizers along with minimum quantity of chemical fertilizers in various agro climatic conditions to increase the growth, yield and quality and cost benefit ratio of a promising medicinal crop Piper longum. I considered that this book will be useful for students, teachers and researchers in the field of agriculture horticulture, crop cultivation and soil microbiology.