In this book, the authors present current research in the study of herbaceous plants and nicotiana. Topics include the role of diversity of herbaceous feed items for shrubby rangeland management; the biosynthesis and regulation of tobacco alkaloids; hybrid lethality in nicotiana; tolerance of herbaceous plants to multiple contaminations in an industrial barren near a nickel-copper smelter; effects of abiotic factors on herbaceous plant community structure; and the environmental performance of three novel opportunity biofuels: popular, brassica and cassava.