Download or read book Fertilizer Use and Crop Yields in the United States written by and published by . This book was released on 1954 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fertilizer Use and Crop Yields in the United States written by and published by . This book was released on 1954 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fertilizer Use and Crop Yields in the United States written by United States. Agricultural Research Service and published by . This book was released on 1954 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fertilizer Use and Crop Yields in the United States written by National Soil and Fertilizer Research Committee and published by . This book was released on 1954 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fertilizer Use in the United States written by Donald Bryan Ibach and published by . This book was released on 1966 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Crop Yield Response to Fertilizer in the United States written by Donald Bryan Ibach and published by . This book was released on 1968 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Economic Position of Fertilizer Use in the United States written by Donald Bryan Ibach and published by . This book was released on 1958 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pp. 3 -- Introduction. pp. 4 -- Current fertilizer practice, by crops. pp. 5 -- Production from current acreage and projected needs. pp. 12 -- Acreage-fertilizer combinations for U.S. production and projected needs. pp. 14 -- Meeting projected needs at minimum unit cost. pp. 19 -- Optimum use of limited quantities of fertilizer. pp. 25.

Download or read book Fertilizer Use in the United States by Crops and Areas 1964 Estimates written by Donald Bryan Ibach and published by . This book was released on 1967 with total page 390 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Manure Use for Fertilizer and for Energy written by James M. MacDonald and published by DIANE Publishing. This book was released on 2010 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt: About 5% of all U.S. cropland is currently fertilized with livestock manure. Expanded environmental regulation through nutrient management plans will likely lead to wider use of manure on cropland, at higher production costs, but with only modest impacts on commodity demand, or farm structure. While current use is limited, expanded gov¿t. support could lead to a substantial increase in manure use as a feedstock. However, current energy processes are unlikely to compete with fertilizer uses of manure, because they leave fertilizer nutrients as residues, in more marketable form, and because manure-to-energy projects will be most profitable in regions where raw manure is in excess supply, with the least value as fertilizer. Charts and tables.

Download or read book Restrictions on Using More Fertilizer for Food Crops in Developing Countries Department of State and Other Federal Agencies written by United States. General Accounting Office and published by . This book was released on 1977 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fertilizer Use and Crop Yields in the written by National Soil and Fertilizer Research Committee (U.S.). Fertilizer Work Group and published by . This book was released on 1951 with total page 556 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Agriculture and the Nitrogen Cycle written by Arvin Mosier and published by Island Press. This book was released on 2013-04-10 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen is an essential element for plant growth and development and a key agricultural input-but in excess it can lead to a host of problems for human and ecological health. Across the globe, distribution of fertilizer nitrogen is very uneven, with some areas subject to nitrogen pollution and others suffering from reduced soil fertility, diminished crop production, and other consequences of inadequate supply. Agriculture and the Nitrogen Cycle provides a global assessment of the role of nitrogen fertilizer in the nitrogen cycle. The focus of the book is regional, emphasizing the need to maintain food and fiber production while minimizing environmental impacts where fertilizer is abundant, and the need to enhance fertilizer utilization in systems where nitrogen is limited. The book is derived from a workshop held by the Scientific Committee on Problems of the Environment (SCOPE) in Kampala, Uganda, that brought together the world's leading scientists to examine and discuss the nitrogen cycle and related problems. It contains an overview chapter that summarizes the group's findings, four chapters on cross-cutting issues, and thirteen background chapters. The book offers a unique synthesis and provides an up-to-date, broad perspective on the issues of nitrogen fertilizer in food production and the interaction of nitrogen and the environment.

Download or read book Residual Effects of Fall and Spring applied Nitrogen Fertilizers on Crop Yields in the Southeastern United States written by Robert W. Pearson and published by . This book was released on 1961 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen fertilizer broadcast in November or December on widely different soils at seven locations in Alabama, Georgia, and Mississippi during 1955-59 was only 49 percent as effective as nitrogen fertilizer applied the following spring when measured by corn yields. In terms of nitrogen recovered, the relative effectiveness was 62 percent. There were no consistent differences among the five nitrogen sources applied in the fall as measured by corn yields, but nitrogen recovery tended to be lower from urea than from the other sources. Considerable residual effects of spring-applied nitrogen were found over a period of 16 months based on both yield and nitrogen uptake by the crops. Average uptakes of 25 and 34 pounds per acre of additional nitrogen were made by the second and third crops, respectively, from the 200-pound original application. This residual nitrogen produced average yield increases of 1,600 pounds of dry forage and 19 bushels of corn per acre. These results emphasize the economic importance of residual nitrogen and the need for soil test procedures for its estimation.

Download or read book Fertilizers and Lime in the United States written by and published by . This book was released on 1946 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication presents a factual review relating to resources, production, marketing, and use of fertilizers and lime, information of basic importance to all who are concerned with or interested in the formulation of a national policy in respect to these materials.

Download or read book Fertilizer Requirements in 2015 and 2030 written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2000 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a joint study involving five organisations from both the public and private sectors. The objective is to explore the future need for fertilizer required to support the Food and Agriculture Organization's (FAO) projections of agricultural commodity production for 2015 and 2030. The paper begins by briefly reviewing attempts to identify and quantify the factors influencing the growth in demand and supply for agricultural commodities. Several studies that estimate long-term fertlizer use are also reviewed, followed by a discussion of the forecasting methods and data. The results and implications conclude the paper. The study projects growth rates of between 0.7 and 1.3 per cent, depending on assumptions about nutrient efficiency over the next 35 years

Download or read book Food Costs Farm Incomes and Crop Yields with Restrictions on Fertilizer Use written by Leo V. Mayer and published by . This book was released on 1971 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Circular United States Department of Agriculture written by United States. Dept. of Agriculture and published by . This book was released on 1967 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt: