The essentiality of selenium (Se) is well recognized for animals and microbes. The importance of Se though documented for crops, however the essentiality aspect is still under consideration. Selenate, selenite, elemental Se and selenide, nano Se role for crops life cycle is being explored. Surprisingly, a concrete reference book is lacking that will address Se role in agriculture tracing it's journey from arable soil to spoon via crop's response (physiological, molecular, metabolomics, transcriptomics etc.) to field scale application. Moreover, the importance of Se in agriculture will be the area of prime focus with topics like Se's role in biotic, abiotic stress, biofortification under the era of globally operating climate change regime. Additionally, the contribution of Se in post-harvest phase will be given an equal importance to illustrate Se's role as well as the toxicological aspect too. In short the main challenge associate with Se it's marginal difference between beneficial /essentiality and toxicity (environmental health also) will be theme of this book with sustainable developmental goal oriented approach. Eminent researchers (early career, mid and established) across the globe will enrich this volume with their contribution and thus make this title emerged aa a valuable document for student, research scholars, faculty members and policy makers in coming years.
