Download or read book Rubber Content of Native Plants of the Southwestern Desert written by Theophil Frederic Buehrer and published by . This book was released on 1945 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Rubber Content of Miscellaneous Plants written by Loren George Polhamus and published by . This book was released on 1957 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Production Research Report written by and published by . This book was released on 1957 with total page 1042 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book USDA Forest Service General Technical Report INT written by Intermountain Forest and Range Experiment Station (U.S.) and published by . This book was released on 1972 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Production Research Report written by United States. Agricultural Research Service and published by . This book was released on 1957 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Natural Rubber producing Plants for the United States written by Janice Emily Bowers and published by . This book was released on 1990 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt: Project note and acknowledgments. Economics of domestic rubber-production. Evaluation of potential rubber crops. Selection and breeding of rubber crops. Identifying potential rubber plants.

Download or read book Wildland Shrubs Their Biology and Utilization written by C. M. McKell and published by . This book was released on 1972 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Natural Resources And Development In Arid Regions written by Enrique Campos-Lopez and published by Routledge. This book was released on 2019-03-08 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book, the authors integrate various perspectives on the evaluation of natural resources in arid and semiarid zones, analyze development options, and discuss systems analysis tools that could be important for the management of technology.

Download or read book Sonoran Desert Plants written by Raymond M. Turner and published by University of Arizona Press. This book was released on 2022-02-08 with total page 523 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Sonoran Desert, a fragile ecosystem, is under ever-increasing pressure from a burgeoning human population. This ecological atlas of the region's plants, a greatly enlarged and full revised version of the original 1972 atlas, will be an invaluable resource for plant ecologists, botanists, geographers, and other scientists, and for all with a serious interest in living with and protecting a unique natural southwestern heritage. An encyclopedia as well as an atlas, this monumental work describes the taxonomy, geographic distribution, and ecology of 339 plants, most of them common and characteristic trees, shrubs, or succulants. Also included is valuable information on natural history and ethnobotanical, commercial, and horticultural uses of these plants. The entry for each species includes a range map, an elevational profile, and a narrative account. The authors also include an extensive bibliography, referring the reader to the latest research and numerous references of historical importance, with a glossary to aid the general reader. Sonoran Desert Plants is a monumental work, unlikely to be superseded in the next generation. As the region continues to attract more people, there will be an increasingly urgent need for basic knowledge of plant species as a guide for creative and sustainable habitation of the area. This book will stand as a landmark resource for many years to come.

Download or read book Technical Bulletin University of Arizona Agricultural Experiment Station written by University of Arizona. Agricultural Experiment Station and published by . This book was released on 1983 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Selected Guide to the Literature of the Flowering Plants of Mexico written by Ida Kaplan Langman and published by University of Pennsylvania Press. This book was released on 2018-01-09 with total page 1020 pages. Available in PDF, EPUB and Kindle. Book excerpt: This bibliography is a guide to the literature on Mexican flowering plants, beginning with the days of the discovery and conquest of Mexico by the Spaniards in the early sixteenth century.

Download or read book Technical Bulletin Agricultural Experiment Station the University of Arizona written by University of Arizona. Agricultural Experiment Station and published by . This book was released on 1948 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Moderne Methoden der Pflanzenanalyse Modern Methods of Plant Analysis written by K. Paech and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 774 pages. Available in PDF, EPUB and Kindle. Book excerpt: If, following the solvent extraction of a hydrocarbon from a plant, it is not known whether it is one or the other, a method of distinguishing the two is described by HENDRICKS, WILDMAN and JONES (1946). The technique involves the infra-red absorption spectra of the two isomers. At about 12 mp. the relative absorption coefficient of rubber is 42% greater than for gutta. ScHLESINGER and LEPER (1951) describe two procedures for separation of the rubber and gutta hydrocarbons from large quantities of crude chicle. In one, the chicle is extracted with benzene which dissolves both isomers. An excess absolute ethyl acetate is added and the mixture stored at 5° C overnight. The gutta precipitates out and the rubber remains in solution. The other method is as follows: (1) Ten grams of chicle are extracted with acetone for 24 hours in a Soxhlet extraction apparatus. (2) The insoluble material in the thimble is allowed to .. it dry, then immersed in 150 ml. of cold Skellysolve B in a refrigerator at 10° C and· allowed to stand for 48 hours with occasional agitation. (3) The thimble is then removed from the solvent and the enclosed residue washed several times with fresh, cold Skellysolve B. (4) An excess of acetone and a few drops of a concentrated aqueous solution of sodium iodide are added to the combined Skellysolve B extract and washings and allowed to stand overnight in a refrigerator.

Download or read book Soil and Crop Studies at the Big Spring Texas Field Station 1916 53 written by Fred Earl Keating and published by . This book was released on 1957 with total page 1484 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bulletin written by University of Arizona. Agricultural Experiment Station and published by . This book was released on 1946 with total page 748 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book India Rubber Tire Review written by and published by . This book was released on 1924 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book India Rubber Review written by and published by . This book was released on 1924 with total page 1550 pages. Available in PDF, EPUB and Kindle. Book excerpt: