Agro Commodities & Agricultural Produts

The Diversity and Evolution of Plants

This exciting new textbook examines the concepts of evolution as the underlying cause of the rich diversity of life on earth-and our danger of losing that rich diversity. Written as a college textbook, The Diversity and Evolution of Plants introduces the great variety of life during past ages, manifested by the fossil record, using a new natural classification system. It begins in the Proterozoic Era, when bacteria and bluegreen algae first appeared, and continues through the explosions of new marine forms in the Helikian and Hadrynian Periods, land plants in the Devonian, and flowering plants in the Cretaceous. Following an introduction, the three subkingdoms of plants are discussed. Each chapter covers one of the eleven divisions of plants and begins with an interesting vignette of a plant typical of that division. A section on each of the classes within the division follows. Each section describes where the groups of plants are found and their distinguishing features. Discussions in each section include phylogeny and classification, general morphology, and physiology, ecological significance, economic uses, and potential for research. Suggested readings and student exercises are found at the end of each chapter.

List Price: $ 133.95

Price: $ 26.78

The Diversity and Evolution of Plants

This exciting new textbook examines the concepts of evolution as the underlying cause of the rich diversity of life on earth-and our danger of losing that rich diversity. Written as a college textbook, The Diversity and Evolution of Plants introduces the great variety of life during past ages, manifested by the fossil record, using a new natural classification system. It begins in the Proterozoic Era, when bacteria and bluegreen algae first appeared, and continues through the explosions of new marine forms in the Helikian and Hadrynian Periods, land plants in the Devonian, and flowering plants in the Cretaceous. Following an introduction, the three subkingdoms of plants are discussed. Each chapter covers one of the eleven divisions of plants and begins with an interesting vignette of a plant typical of that division. A section on each of the classes within the division follows. Each section describes where the groups of plants are found and their distinguishing features. Discussions in each section include phylogeny and classification, general morphology, and physiology, ecological significance, economic uses, and potential for research. Suggested readings and student exercises are found at the end of each chapter.

List Price: $ 133.95

Price: $ 26.78

Industrializing the Corn Belt: Agriculture, Technology, and Environment, 1945-1972

From the late 1940s to the early 1970s, farmers in the Corn Belt transformed their region into a new, industrial powerhouse of large-scale production, mechanization, specialization, and efficiency. Many farm experts and implement manufacturers had urged farmers in this direction for decades, but it was the persistent labor shortage and cost-price squeeze following WWII that prompted farmers to pave the way to industrializing agriculture. Anderson examines the changes in Iowa, a representative state of the Corn Belt, in order to explore why farmers adopted particular technologies and how, over time, they integrated new tools and techniques.

In addition to the impressive field machinery, grain storage facilities, and automated feeding systems were the less visible, but no less potent, chemical technologies antibiotics and growth hormones administered to livestock, as well as insecticide, herbicide, and fertilizer applied to crops. Much of this new technology created unintended consequences: pesticides encouraged the proliferation of resistant strains of plants and insects while also polluting the environment and threatening wildlife, and the use of feed additives triggered concern about the health effects to consumers.

Anderson explains that the cost of equipment and chemicals made unprecedented demands on farm capital, and in order to maximize production, farmers planted more acres with fewer but more profitable crops or specialized in raising large herds of a single livestock species. The industrialization of agriculture gave rural Americans a lifestyle resembling that of their urban and suburban counterparts. Yet the rural population continued to dwindle as farms required less human labor, and many small farmers, unable or unwilling to compete, chose to sell out.

Industrializing the Corn Belt based on farm records, cooperative extension reports, USDA publications, oral interviews, trade literature, and agricultural periodicals offers a fresh look at an important period of revolutionary change in agriculture through the eyes of those who grew the crops, raised the livestock, implemented new technology, and ultimately made the decisions that transformed the nature of the family farm and the Midwestern landscape.

List Price: $ 32.95

Price: $ 27.01

The Diversity and Evolution of Plants

This exciting new textbook examines the concepts of evolution as the underlying cause of the rich diversity of life on earth-and our danger of losing that rich diversity. Written as a college textbook, The Diversity and Evolution of Plants introduces the great variety of life during past ages, manifested by the fossil record, using a new natural classification system. It begins in the Proterozoic Era, when bacteria and bluegreen algae first appeared, and continues through the explosions of new marine forms in the Helikian and Hadrynian Periods, land plants in the Devonian, and flowering plants in the Cretaceous. Following an introduction, the three subkingdoms of plants are discussed. Each chapter covers one of the eleven divisions of plants and begins with an interesting vignette of a plant typical of that division. A section on each of the classes within the division follows. Each section describes where the groups of plants are found and their distinguishing features. Discussions in each section include phylogeny and classification, general morphology, and physiology, ecological significance, economic uses, and potential for research. Suggested readings and student exercises are found at the end of each chapter.

List Price: $ 133.95

Price: $ 26.78