This book presents and discusses current research in the study of soil contaminants. Particular attention is placed on the effect soil contaminants have on crop production and growth. Topics discussed include a risk assessment of arsenic in homegrown vegetables; soil properties and crop performance in the semi-arid subtropics of Australia; pesticides as a threat or boon to fertile agricultural lands; amendment-enhanced phytoextraction of soil contaminants and the ecological significances of secondary metabolites in terrestrial biosystems.