Genetic engineering, biofertilisation and organic agriculture offer innovative friendly methods for sustainable food production. In the present era of globalization, these approaches have attracted the farming community to address the challenges of food quality, greenhouse gas emissions, soil degradation and climate change, which ultimately leads to a healthier/safer ecosystem. The authors of this book emphasise the importance of plant biotechnology and cover crops to improve the overall performance of agricultural systems and to cut down expensive costs of chemical fertilisers. The role of phosphate rock (PR) and mixed cropping systems for organic agriculture are discussed in detail, and nitrate leaching and its management with reference to vegetable crops are highlighted. The authors provide causes, impact and remediation methods to address the issue of manure spills. The effects of cropping practices (tillage, crop rotation, inputs) on relative efficiency and population dynamics of soil microbes in relation to soil fertility have also been described. Soil structure and fertility of salt-affected soils can be efficiently improved by cyanobacteria because of their ability to tolerate various stresses and to produce extracellular polysaccharides. The authors measure the impact of intensive poultry rearing on environmental sustainability using various approaches, each of which has been elaborated with its application to agriculture and especially to the poultry industry. The book also provides lucid information on the use of compost in the organic production system. The implicit message to use simultaneously genetic engineering, biofertilisation and organic farming for a better ecosystem is commended, and this book is highly recommended to researchers, policy makers, farmers and students engaged in the field of agriculture and related disciplines.