Download or read book Effects of Cultivation and Cropping on the Chemical Composition of Some Western Canada Prairie Soils written by A. C. Caldwell and published by . This book was released on 1938 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Cultivation and Cropping on the Chemical Composition of Some Western Canada Prairies Soils written by A. C. Caldwell and published by . This book was released on 1939 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Chemical Composition of Western Prairie Soils as Affected by Cultivation and Cropping written by Arthur Lloyd Brown and published by . This book was released on 1941 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Experiment Station Record written by United States. Office of Experiment Stations and published by . This book was released on 1935 with total page 1118 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Experiment Station Record written by U.S. Office of Experiment Stations and published by . This book was released on 1947 with total page 1016 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Publication written by and published by . This book was released on 1971 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Conservation Research Report written by and published by . This book was released on 1965 with total page 756 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Canadian Journal of Agricultural Science written by and published by . This book was released on 1954 with total page 746 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Revue Agronomique Canadien written by and published by . This book was released on 1951 with total page 754 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Note written by and published by . This book was released on 1947 with total page 1026 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Canadian Journal of Soil Science written by and published by . This book was released on 2003 with total page 694 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Bulletin written by and published by . This book was released on 1956 with total page 410 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Advances in Soil Science written by and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 233 pages. Available in PDF, EPUB and Kindle. Book excerpt: The world population in 1950 was 2. 5 billion and is more than 5 billion today. The agriculture community, however, has responded remarkably well to meeting the increased need for food and fiber. While the population growth during this period averaged almost 2% annually, the production of grain increased at an even faster rate. From 1950 to 1973, grain production increased 3. 1% annually, but slowed to about 2% from 1973 to 1984. There fore, as a whole, the world has more grain per capita available today than ever before. Several countries that were food importers just a few years ago are food exporters today. The world carry-over stocks today are the highest in years. While the major concern just a few years ago was whether the world could produce adequate food, the problem for many countries today is how to export their surpluses. Although the world as a whole has surplus food supplies, there are millions of people without adequate food to exist, and there are additional millions who have a bare subsistence diet at best. The average daily calorie supply for the developed countries is more than 3,300 per person, while the average for the developing countries is only about 2,200. The major global food produc tion problems have shifted from Asia to Africa, where malnutrition, poverty, and starvation are attracting world attention.

Download or read book The Changing Carbon Cycle written by John R. Trabalka and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 615 pages. Available in PDF, EPUB and Kindle. Book excerpt: The United States Government, cognizant of its responsibilities to future generations, has been sponsoring research for nine years into the causes, effects, and potential impacts of increased concentrations of carbon dioxide (C0 ) in the atmosphere. Agencies such as the National Science Foun 2 dation, National Oceanic and Atmospheric Administration, and the U.S. Department of Energy (DOE) cooperatively spent about $100 million from FY 1978 through FY 1984 directly on the study of CO • The DOE, as the 2 lead government agency for coordinating the government' s research ef forts, has been responsible for about 60% of these research efforts. William James succinctly defined our purpose when he stated science must be based upon " ... irreducible and stubborn facts." Scientific knowledge can and will reduce the present significant uncertainty sur rounding our understanding of the causes, effects, and potential impacts of increasing atmospheric CO2• We have come far during the past seven years in resolving some underlyinig doubts and in narrowing the ranges of disagreement. Basic concepts have become less murky. Yet, much more must be accomplished; more irreducible and stubborn facts are needed to reduce the uncertainties so that we can improve our knowledge base. Uncertainty can never be reduced to zero. However, with a much improved knowledge base, we will be able to learn, under stand, and be in a position to make decisions.

Download or read book Summer Fallow in the Western United States written by United States. Agricultural Research Service and published by . This book was released on 1974 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Canadian Journal of Agriculture Science written by and published by . This book was released on 1954 with total page 1028 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliography of Agriculture written by and published by . This book was released on 1976 with total page 1732 pages. Available in PDF, EPUB and Kindle. Book excerpt: