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Author : Donald Bryan Ibach
Publisher :
ISBN 13 :
Total Pages : 300 pages
Book Rating : 4.3/5 ( download)
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:
Author : James Richard Adams
Publisher :
ISBN 13 :
Total Pages : 295 pages
Book Rating : 4.:/5 (11 download)
Download or read book Crop Yield Response to Fertilizer in the United States written by James Richard Adams and published by . This book was released on 1968 with total page 295 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Donald Bryan Ibach
Publisher :
ISBN 13 :
Total Pages : 304 pages
Book Rating : 4.:/5 (31 download)
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 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Donald Bryan Ibach
Publisher :
ISBN 13 :
Total Pages : 28 pages
Book Rating : 4.:/5 ( download)
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:
Author : Donald Bryan Ibach
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.X/5 (3 download)
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.
Author : National Soil and Fertilizer Research Committee (U.S.). Fertilizer Work Group
Publisher :
ISBN 13 :
Total Pages : 556 pages
Book Rating : 4.E/5 ( download)
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:
Author : Robert F. Hutton
Publisher :
ISBN 13 :
Total Pages : 70 pages
Book Rating : 4.3/5 (129 download)
Download or read book An Appraisal of Research on the Economics of Fertilizer Use written by Robert F. Hutton and published by . This book was released on 1955 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt: During fiscal year 1954, a program was undertaken by TVA to develop a clearer perspective of the problems arising from economic interpretation of fertilizer-response research.
Author :
Publisher :
ISBN 13 :
Total Pages : 94 pages
Book Rating : 4.X/5 (3 download)
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 and published by . This book was released on 1954 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Robert W. Pearson
Publisher :
ISBN 13 :
Total Pages : 24 pages
Book Rating : 4.X/5 (3 download)
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.
Author : Mark S. Ash
Publisher :
ISBN 13 :
Total Pages : 52 pages
Book Rating : 4.:/5 (31 download)
Download or read book Regional Crop Yield Response for U.S. Grains written by Mark S. Ash and published by . This book was released on 1987 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Food and Agriculture Organization of the United Nations
Publisher : Food & Agriculture Org.
ISBN 13 : 9789251047682
Total Pages : 116 pages
Book Rating : 4.0/5 (476 download)
Download or read book Deficit Irrigation Practices written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2002 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the context of improving water productivity, there is a growing interest in deficit irrigation, an irrigation practice whereby water supply is reduced below maximum levels and mild stress is allowed with minimal effects on yield. Under conditions of scarce water supply and drought, deficit irrigation can lead to greater economic gains than maximizing yields per unit of water for a given crop; farmers are more inclined to use water more efficiently, and more water-efficient cash crop selection helps optimize returns. However, this approach requires precise knowledge of crop response to water as drought tolerance varies considerably by species, cultivar and stage of growth. The studies present the latest research concepts and involve various practices for deficit irrigation. Both annual and perennial crops were exposed to different levels of water stress, either during a particular growth phase, throughout the whole growing season or in a combination of growth stages. The overall finding, based on the synthesis of the different contributions, is that deficit or regulated-deficit irrigation can be beneficial where appropriately applied. Substantial savings of water can be achieved with little impact on the quality and quantity of the harvested yield. However, to be successful, an intimate knowledge of crop behavior is required, as crop response to water stress varies considerably.
Author : James Kasal
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.:/5 (2 download)
Download or read book Technical Bulletin written by James Kasal and published by . This book was released on 1976 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Donald Bryan Ibach
Publisher :
ISBN 13 :
Total Pages : 32 pages
Book Rating : 4.:/5 (31 download)
Download or read book A Graphic Method of Interpreting Response to Fertilizer written by Donald Bryan Ibach and published by . This book was released on 1956 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Rattan Lal
Publisher : Springer Science & Business Media
ISBN 13 : 9400723660
Total Pages : 383 pages
Book Rating : 4.4/5 (7 download)
Download or read book Carbon Sequestration in Urban Ecosystems written by Rattan Lal and published by Springer Science & Business Media. This book was released on 2011-12-10 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: Urbanization drastically alters the ecosystems structure and functions, disrupts cycling of C and other elements along with water. It alters the energy balance and influences climate at local, regional and global scales. In 2008, urban population exceeded the rural population. In 2050, 70% of the world population will live in urban centers. The number of megacities (10 million inhabitants) increased from three in 1975 to 19 in 2007, and is projected to be 27 in 2025. Rapid urbanization is altering the ecosystem C budget. Yet, urban ecosystems have a large C sink capacity in soils and biota. Judicious planning and effective management can enhance C pool in urban ecosystems, and off-set some of the anthropogenic emissions. Principal components with regards to C sequestration include home lawns and turfs, urban forests, green roofs, park and recreational/sports facilities and urban agriculture.
Author : Food and Agriculture Organization of the United Nations
Publisher : Food & Agriculture Org.
ISBN 13 : 9789251044506
Total Pages : 44 pages
Book Rating : 4.0/5 (445 download)
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
Author : National Research Council (U.S.). Committee on Economics of Fertilizer Use
Publisher : National Academies
ISBN 13 :
Total Pages : 104 pages
Book Rating : 4.3/5 (91 download)
Download or read book Status and Methods of Research in Economic and Agronomic Aspects of Fertilizer Response and Use written by National Research Council (U.S.). Committee on Economics of Fertilizer Use and published by National Academies. This book was released on 1961 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
