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The major theme of this book is environmental preservation by controlling release of undesirable greenhouse gases to realize the sustainable development of animal agriculture. Technology exists for the effective collection of methane generated from anaerobic fermentation of animal effluent and its use as a biomass energy source. Fossil fuel consumption can be reduced and there can be increased use of locally available energy sources. In addition, promoting environmentally-conscious agriculture which does not rely on the chemical fertilizer can be realized by effective use of animal manure and compost products.
Plants of the Virgin Mountains is a compact field guide to the common plants found in Arizona's northwest corner (and adjoining Nevada and southern Utah). The rugged Virgin Mountain range encompasses plants of the Mohave desert like Joshua tree, creosote bush, and various cacti, to high mountain forest with ponderosa pine and Douglas fir. This elevational gradient adds to the diversity of habitats and their associated plants, making the range of interest to botanists, naturalists, and explorers. Covered in the book are 28 trees and shrubs, 12 types of cactus and cactus-like plants, and 26 species of herbaceous plants ("wildflowers"). Each plant is illustrated with a line drawing and described in non-technical terms, with information added on any human or wildlife use of the plant. An illustrated glossary and a section describing the range's various ecosystems is included. Although not a complete flora of the Virgin Mountains, this book serves as a handy introduction to many of the common (and colorful) plants a visitor to the area is likely to see.