Factors Affecting the Response of Crops to Lime on Acid Soils PDF Download

Author: Peter MacDonald Bremner
Publisher:
ISBN:
Category : Lime
Languages : en
Pages : 278

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Author: Fred Adams
Publisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 400

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Book Description
The chemistry of acidity. Physiological effects of hydrogen, aluminum, and managanese toxicities in acid soil. Physiological aspects of calcium, magnesium, and molybdenum deficiencies in plants. Liming materials and practices. Crop response to lime in the southern united states. Crop response to lime in the midwestern united states. Crop response to lime in the northeastern united states. Crop response to lime in the wested states. Crop response to lime on soils in the tropics. Glossary-common and scientific names of crops referred to in this monograph.

Author: Henry Rhys Jones
Publisher:
ISBN:
Category : Liming of soils
Languages : en
Pages : 364

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Author: A Robson
Publisher: Elsevier
ISBN: 0323156223
Category : Technology & Engineering
Languages : en
Pages : 319

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Book Description
Soil Acidity and Plant Growth emerged from concerns over increasing acidification of soils under improved pastures over wide areas of southern Australia. While the book has its origin in the problems of acidification of Australian soils under pastures, the authors examine soil acidity within a much broader framework, making their views relevant to all agricultural and natural ecosystems on acid soils. The book's first two chapters discuss the chemistry of soil acidity and the ecological processes leading to it. This is followed by separate chapters on biological responses to soil acidity, covering mineralization of soil nitrogen, incidence of plant diseases, plant mycorrhizal associations, symbiotic nitrogen fixation in legumes, and genetic variability in plant response to toxicities. The remaining chapters focus on the correction of soil acidity problems by liming. These include studies on the rates of application and effectiveness of liming materials; and the development and use of computer modelling procedures to help researchers identify the effects and interactions of soil pH on component processes and to provide assistance to farmers in the management of long-term subterranean clover pastures.

Author: Douglas Charles Penney
Publisher:
ISBN:
Category : Crops
Languages : en
Pages : 0

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The main objectives were to determine the extent to which yields of various farm crops are limited by soil acidity in Alberta and northeastern British Columbia; and to find suitable soil tests to predict the effect of soil acidity on yields of different crops. There were three phases to the work. Initially a greenhouse experi¬ ment was conducted to determine the relative tolerance to acidity of some different species and varieties of crops. Subsequently several of those crops were grown in field experiments with and without lime on 28 typical acid soils. Finally, various soil tests were compared to crop response in the field experiments. In the greenhouse pot culture experiment, the addition of lime to a soil of pH 5.0 and containing 8 ppm of 0.02M CaCl[subscript 2]-soluble A1 increased the yields of barley, rape and alfalfa. The addition of 100 ppm of Mn to the soil produced Mn toxicity symptoms on alfalfa and rape but did not significantly reduce yields. Crop tolerance to acidity was in the order: oats > rape = barley »alfalfa. Small differences in acidity tolerance were found among varieties of barley and rape but no differences were evident among alfalfa varieties. Experiments were conducted at 28 field sites on soils ranging in pH from 3.4 to 6.1,and barley, rape, alfalfa and red clover were grown with and without lime at each of the sites. Soils at the 28 sites ranged widely in type, chemical characteristics and geo¬ graphical location. Acidity tolerance, of the crops and varieties grown, was in the order: red clover > rape = Olli barley > Galt barley > alfalfa. Nodulation of alfalfa was reduced by soil acidity when soil pH was less than 5.6 whereas, nodulation of red clover was reduced only when pH was less than 5.0. Response to lime obtained on the crops grown shows that soil acidity is a significant factor in crop pro¬ duction in the region studied,with alfalfa being the crop most affected. Several soil criteria were used in correlation and regression analyses to assess their ability to predict crop response to lime. For barley and red clover, 0.02M CaCl[subscript 2]-soluble A1 gave the best prediction of response to lime. For rape, 0.02M CaCl[subscript 2]-soluble A1 and Mn gave a better prediction of lime response than soluble A1 alone. Soil pH was the most useful criteria for predicting response of alfalfa to lime.

Author: J. W. Schwartz
Publisher:
ISBN:
Category : Acid soils
Languages : en
Pages : 4

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Author: Rosco Elmo Stephenson
Publisher:
ISBN:
Category :
Languages : en
Pages : 12

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Author: Steve Finch
Publisher: Elsevier
ISBN: 1855736500
Category : Technology & Engineering
Languages : en
Pages : 515

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First published in 1966, Lockhart and Wiseman's Crop Husbandry Including Grassland has established itself as the standard crop husbandry text for students and practitioners alike. Radically revised and expanded, and with a new team of authors, the eighth edition confirms and extends its reputation.Part one looks at the basic conditions for crop growth with chapters on plant structure and growth, soil analysis and management, and the use of fertilisers and manures. There is also a new chapter on the influence of climate and weather. Part two surveys general aspects of crop husbandry. As well as a discussion of cropping techniques, there are new chapters on the important new areas of integrated crop management and organic crop husbandry, as well as discussion of seed selection and production. Part three then looks at how these general techniques are applied to particular crops, with chapters on cereals, root crops, fresh harvested crops, forage crops and combinable break crops. Part four considers the use of grassland with chapters on classification, sowing and management, grazing and conservation for winter feed.Lockhart and Wiseman's Crop Husbandry Including Grassland remains the standard text for general agriculture, land management and agri-business courses, and is a valuable practical reference for the farming industry. - The eighth edition has been widely expanded and remains the standard text for general agriculture, land management and agri-business courses - Includes new chapters on cropping techniques, integrated crop management and quality assurance, seed production and selection and the influence of climate - Discusses basic conditions for crop growth, how techniques are applied to particular crops, the influence of weather and the use of grassland

Author: Arnold Finck
Publisher:
ISBN:
Category : Fertilization of plants
Languages : nl
Pages : 468

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Book Description
Een combinatie van een theoretisch naslagwerk en een uitvoerige gids voor de praktijk, met een onderverdeling naar de verschillende soorten meststoffen, de diverse meststoffen voor de verschillende landbouwgewassen en het gebruik ervan in de bosbouw, de invloed op de grond en op de kwaliteit van het gewas, de doseringen van de meststoffen onder varierende omstandigheden. Verder komen ook de gezondheid van mens en dier in dit verband ter sprake. Het geheel wordt afgesloten met definities voor chemische termen en een index

Author: Harold E. Gene Garrett
Publisher: John Wiley & Sons
ISBN: 0891183779
Category : Technology & Engineering
Languages : en
Pages : 580

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Book Description
North American Agroforestry Explore the many benefits of alternative land-use systems with this incisive resource Humanity has become a victim of its own success. While we’ve managed to meet the needs—to one extent or another—of a large portion of the human population, we’ve often done so by ignoring the health of the natural environment we rely on to sustain our planet. And by deteriorating the quality of our air, water, and land, we’ve put into motion consequences we’ll be dealing with for generations. In the newly revised Third Edition of North American Agroforestry, an expert team of researchers delivers an authoritative and insightful exploration of an alternative land-use system that exploits the positive interactions between trees and crops when they are grown together and bridges the gap between production agriculture and natural resource management. This latest edition includes new material on urban food forests, as well as the air and soil quality benefits of agroforestry, agroforestry’s relevance in the Mexican context, and agroforestry training and education. The book also offers: A thorough introduction to the development of agroforestry as an integrated land use management strategy Comprehensive explorations of agroforestry nomenclature, concepts, and practices, as well as an agroecological foundation for temperate agroforestry Practical discussions of tree-crop interactions in temperate agroforestry, including in systems such as windbreak practices, silvopasture practices, and alley cropping practices In-depth examinations of vegetative environmental buffers for air and water quality benefits, agroforestry for wildlife habitat, agroforestry at the landscape level, and the impact of agroforestry on soil health Perfect for environmental scientists, natural resource professionals and ecologists, North American Agroforestry will also earn a place in the libraries of students and scholars of agricultural sciences interested in the potential benefits of agroforestry.