Download or read book American Seedsman written by and published by . This book was released on 1920 with total page 654 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Most Ancient Egypt written by William C. Hayes and published by . This book was released on 1965 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Human Impact written by Andrew Goudie and published by Wiley-Blackwell. This book was released on 1981-01-01 with total page 316 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Crop Protection in Medieval Agriculture written by Jan C. Zadoks and published by Sidestone Press. This book was released on 2013-10-16 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mediterranean and West European pre-modern agriculture (agriculture before 1600) was by necessity ‘organic agriculture’. Crop protection is part and parcel of this agriculture, with weed control in the forefront. Crop protection is embedded in the medieval agronomy text books but specialised sections do occur. Weeds, insects and diseases are described but identification in modern terms is not easy. The pre-modern ‘Crop Portfolio’ is well filled, certainly in the Mediterranean area. The medieval ‘Pest Portfolio’ differs from the modern one because agriculture then was a Low External Input Agriculture, and because the proportion of cultivated to non-cultivated land was drastically lower than today. The pre-modern ‘Control Portfolio’ is surprisingly rich, both in preventive and interventive measures. Prevention was by risk management, intensive tillage, and careful storage. Intervention was mechanical and chemical. Chemical intervention used natural substances such as sulphur, pitch, and ‘botanicals’. Some fifty plant species are mentioned in a crop protection context. Though application methods look rather modern they are typically low-tech. Among them are seed disinfection, spraying, dusting, fumigation, grease banding, wound care, and hand-picking but also scarification, now outdated. The reality of pest outbreaks and other damages is explored as to frequency, intensity, and extent. Information on the practical use of the recommended treatments is scanty. If applied, their effectiveness remains enigmatic. Three medieval agronomists are at the heart of this book, but historical developments in crop protection from early Punic, Greek, and Roman authors to the first modern author are outlined. The readership of these writers was the privileged class of landowners but hints pointing to the exchange of ideas between them and the common peasant were found. Consideration is given to the pre-modern reasoning in matters of crop protection. Comparison of pre-modern crop protection and its counterpart in modern organic agriculture is difficult because of drastic changes in the relation between crop areas and non-crop areas, and because of the great difference in yield levels then and now, with several associated differences.

Download or read book The Glacial World According to Wally written by Wallace S. Broecker and published by . This book was released on 1995 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Price Current grain Reporter written by and published by . This book was released on 1921 with total page 1402 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Horticultural Trade Directory written by and published by . This book was released on 1938 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Seed Trade Buyers Guide written by and published by . This book was released on 1921 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Human Adaptation in the Ozark and Ouachita Mountains written by George Sabo and published by . This book was released on 1990 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Science as a Way of Knowing written by John Alexander Moore and published by Harvard University Press. This book was released on 1993 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book makes Moore's wisdom available to students in a lively, richly illustrated account of the history and workings of life. Employing rhetoric strategies including case histories, hypotheses and deductions, and chronological narrative, it provides both a cultural history of biology and an introduction to the procedures and values of science.

Download or read book Africans written by John Iliffe and published by Cambridge University Press. This book was released on 2017-07-13 with total page 421 pages. Available in PDF, EPUB and Kindle. Book excerpt: An updated and comprehensive single-volume history covering all periods from human origins to contemporary African situations.

Download or read book Codex Des Restes V g taux de L gypte Ancienne written by Christian de Vartavan and published by Sais. This book was released on 1997 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: There have been very few comprehensive studies of the ancient flora of Egypt and most of these have been interpretive syntheses of data. In this book, the authors present a codex of more than 4,600 identifications of Egyptian plant remains, bringing together material from more than 350 archaeobotanical reports. The entries, which come from the Palaeolithic to Islamic and Ottoman periods, are listed alphabetically, with the genus or family name, date, the name of the specialist making the identification, references, provenance and other information. A short introduction is given in French and English although there is no other commentary or interpretation of the evidence. Written for the botanist and non-botanist, although highly specialised.

Download or read book From Kostenki to Clovis written by Olga Soffer and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 510 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the American Side I went to the USSR for the first time in 1982 to attend the 11th meeting of the International Union for Quaternary research (INQUA) held at the Moscow State University. At that time relations between our two countries were anything but congenial and many restrictions were placed on our viewing the archaeological and paleontological collections and labora tory facilities. This was not the ideal climate for the free exchange of ideas needed for meaningful research. However, it was obvious to us that the strained relations did not extend to scientific discussions between scholars. We left that meeting well aware that if the problems of prehistoric Old World-New World relationships were to be resolved, it would eventually require cooperative research efforts within the world community of archaeologists. At that time, the pre-Clovis problem in New World archaeology was foremost in the minds of many North American researchers: tool technology and assemblages were being studied as a possible means of establishing cultural relationships across the Bering Strait, Clovis sites and mammoth kills were being looked at with new ideas for interpretation, and New World researchers realized that to resolve these questions they had to become familiar with the archaeological record of northeast Asia. A chance meeting of the writer with Olga Soffer in 1983 led to serious discussions of the sites on the Russian or East European Plain.

Download or read book Grain World written by and published by . This book was released on 1921 with total page 1120 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The American Elevator and Grain Trade written by and published by . This book was released on 1921 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Political Ecology written by Paul Robbins and published by John Wiley & Sons. This book was released on 2019-10-08 with total page 381 pages. Available in PDF, EPUB and Kindle. Book excerpt: An accessible, focused exploration of the field of political ecology The third edition of Political Ecology spans this sprawling field, using grounded examples and careful readings of current literature. While the study of political ecology is sometimes difficult to fathom, owing to its breadth and diversity, this resource simplifies the discussion by reducing the field down into a few core questions and arguments. These points clearly demonstrate how critical theory can make pragmatic contributions to the fields of conservation, development, and environmental management. The latest edition of this seminal work is also more closely focused, with references to recent work from around the world. Further, Political Ecology raises critical questions about “traditional” approaches to environmental questions and problems. This new edition: Includes international work in the field coming out of Europe, Latin America, and Asia Explains political ecology and its tendency to disrupt the environmental research and practice by both advancing and undermining associated fields of study Contains contributions from a wide range of diverse backgrounds and expertise Offers a resource that is written in highly-accessible, straightforward language Outlines the frontiers of the field and frames climate change and the end of population growth with the framework of political ecology An excellent resource for undergraduates and academics, the third edition of Political Ecology offers an updated edition of the guide to this diverse, quickly growing field that is at the heart of how humans shape the world and, in turn, are shaped by it.

Download or read book Agriculture in Semi Arid Environments written by A.E. Hall and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 357 pages. Available in PDF, EPUB and Kindle. Book excerpt: The semi-arid zones of the world are fragile ecosystems which are being sub stantially modified by the activities of mankind. Increasing human populations have resulted in greater demands on semi-arid zones for providing human susten ance and the possibility that this may enhance desertification is a grave concern. These zones are harsh habitats for humans. The famines that resulted from drought during the late 1960's and the 1970's in the African Sahel illustrated the unreliability of present agricultural systems in this zone. Large fluctuations in ag ricultural production have occurred in semi-arid zones of Australia, North Ameri ca, and the Soviet Union due to periodic droughts, even though considerable ag ricultural technology has been devoted to agricultural development in these zones. The challenge to mankind is to manage these different semi-arid zones so that pro ductivity is increased and stabilized, and environmental deterioration is decreased. Irrigation can be used to increase and stabilize agricultural production in semi-arid zones as discussed in Volume 5 of this series, Arid Zone Irrigation. The present volume, Agriculture in Semi-Arid Environments, focuses on dryland farming in semi-arid zones, and is relevant to the large areas of the world where rainfall is limiting and where water is not available for irrigation. This volume is designed to assist agricultural development in these areas and consists of reviews and analyses of available information by scientists working in Africa, Australia, and at the U ni versity of California.