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Book Wheat Rusts

Download or read book Wheat Rusts written by RA McIntosh and published by CSIRO PUBLISHING. This book was released on 1995-01-01 with total page 308 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although stem rust has been controlled by means of resistant cultivars, leaf and stripe rust continue as problems for many growing areas of the world. Wheat Rusts: An Atlas of Resistance Genes has been prepared by specialists from one of the leading international laboratories, and illustrates with colour photographs typical resistance phenotypes associated with most known genes for resistance to the three rust diseases of wheat. Relevant details for each gene include chromosome location, aspects of genetics and pathogen variation, the effects of environment on expression, origin, availability in genetic and breeding stocks, and use in agriculture. This atlas includes an introduction to host:pathogen genetics, methodologies for wheat rust research and breeding for resistance.

Book Agriculture and the Nitrogen Cycle

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.

Book Influence of Foliar Sulfur  Chloride and Nitrogen on Winter Wheat Grain Yield and Total Nitrogen  Triticum Aestivum L

Download or read book Influence of Foliar Sulfur Chloride and Nitrogen on Winter Wheat Grain Yield and Total Nitrogen Triticum Aestivum L written by Sulochana Dhital and published by . This book was released on 2013 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Optimum use of nitrogen (N) is a key component in improving wheat grain yield and quality. The combined effect of other nutrients with N can have a positive impact on crop production. Using sulfur (S) and chloride (Cl) in wheat and other cereals has received increased attention in recent years. Foliar S and Cl can assist in optimizing wheat yield and total N, especially in sandy soils with low organic matter where deficiencies are expected. Winter wheat studies were conducted for 3 site-years at Lake Carl Blackwell (LCB) and Lahoma (LAH) in the fall of 2011 and 2012 to evaluate the effect of flag leaf applied foliar N, S and Cl on winter wheat grain yield and grain N. Two N rates, 10 and 20 kg N ha−1, as urea triazone (N-SURE, 28-0-0) and urea ammonium nitrate (UAN, 28-0-0) were foliar applied. Treatments included foliar application of gypsum (6 kg S ha−1) and calcium chloride at a rate of 10 kg Cl ha−1 applied with the help of CO2 backpack sprayer. Results showed total grain N increased with increasing preplant N rate at LCB and LAH. With increasing preplant N, a linear increase in yield was observed at LAH and a quadratic increase in yield at LCB. There was no response to foliar N, Cl and S at both locations. This study indicated that S and Cl fertilization did not increase yield and protein.

Book Sulphur in Plants

    Book Details:
  • Author : Y.P. Abrol
  • Publisher : Springer Science & Business Media
  • Release : 2013-06-29
  • ISBN : 9401702896
  • Pages : 424 pages

Download or read book Sulphur in Plants written by Y.P. Abrol and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sulphur (S) plays a pivotal role in various plant growth and development processes being a constituent of sulphur-containing amino acids, cysteine and methionine, and other metabolites viz., glutathione and phytochelatins, co-factor of enzymes which contribute to stress repair and amelioration of heavy metal toxicity. Besides, a number of S-containing components are biologically active and, thus, a source for use as medicinal value. The basic global issue before the agricultural scientist and world community is to evolve cultivars and develop methodologies for efficient use of inputs to enhance agricultural productivity. This is particularly true of the developing countries which are going to see maximum rise in population with changing food demands and declining availability of land. Amongst the inputs, nutrients play a crucial role. The major requirement is for N, P and K followed by several micro-nutrients. In this context reports of world-wide S deficiency in the agricultural systems are relevant. The reasons are many. Broadly speaking reduction inS emission, use of S-free N, P and K fertilizers and higher biomass production contributed the maximum. Despite the need for sulphur as an essential plant nutrient and the substantial returns expected from its use, very little attention has been given to fill the gap between supply and demand of S.

Book The Use of Nutrients in Crop Plants

Download or read book The Use of Nutrients in Crop Plants written by Nand Kumar Fageria and published by CRC Press. This book was released on 2016-04-19 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: Put Theory into Practice Scarcity of natural resources, higher costs, higher demand, and concerns about environmental pollution- under these circumstances, improving food supply worldwide with adequate quantity and quality is fundamental. Based on the author's more than forty years of experience, The Use of Nutrients in Crop Plants

Book Nitrogen Efficiency in Agricultural Soils

Download or read book Nitrogen Efficiency in Agricultural Soils written by David S. Jenkinson and published by Pergamon. This book was released on 1988 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Seminar on nitrogen efficiency in agricultural soils and the efficiency use of fertilizer nitrogen, held in Edinburgh, 16-18 September 1987, as part of the EC Programme for the Coordination of Agricultural Research.

Book Influence of Environment  Nitrogen Fertilizer  and Cultivar on Dry Matter Accumulation  Grain Yield  and Grain Quality of Three Cultivars of Hard Red Winter Wheat  Triticum Aestivum L

Download or read book Influence of Environment Nitrogen Fertilizer and Cultivar on Dry Matter Accumulation Grain Yield and Grain Quality of Three Cultivars of Hard Red Winter Wheat Triticum Aestivum L written by Margaret K. Kilibwa and published by . This book was released on 1988 with total page 444 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Influence of Environment  Nitrogen Fertilizer  and Cultivar on Dr y  Matter Accumulation  Grain Yield  and Grain Quality of Three Cultivars of Hard Red Winter Wheat  Triticum Aestivum L

Download or read book Influence of Environment Nitrogen Fertilizer and Cultivar on Dr y Matter Accumulation Grain Yield and Grain Quality of Three Cultivars of Hard Red Winter Wheat Triticum Aestivum L written by Margaret Kadenyi Kilibwa and published by . This book was released on 1988 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Nitrogen and Sulfur Effects on Hard Winter Wheat Quality and Asparagine Concentration and Survey of Kansas Soil Sulfur Conditions

Download or read book Nitrogen and Sulfur Effects on Hard Winter Wheat Quality and Asparagine Concentration and Survey of Kansas Soil Sulfur Conditions written by Tara Leanne Wilson and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil sulfur (S) deficiency is becoming increasingly common throughout the U.S. due to The Clean Air Act of 1990; S deficiency is typically found in high sand and low organic matter soils and looks very similar to nitrogen deficiency with stunted growth and chlorosis. Over application of N when there is a S deficiency has shown to be detrimental to wheat quality. Sulfur deficiency is detrimental to baking quality due to its effects on formation of disulfide bonds. These bonds are formed from the sulfhydryl groups of cysteine, which influence viscoelasticity of dough. Soil S deficiency can also lead to an increase of free asparagine concentration which indicates acrylamide forming potential of baked products. Acrylamide is a potential carcinogen; S fertilization has been shown to decrease acrylamide forming potential in wheat flour. Therefore, the objectives of this study were to: i) determine the effect of genotype, N, and S fertility on overall wheat quality and rheological characteristics; ii) determine the typical range of asparagine in wheat grain in Kansas: and iii) determine the influence of S availability in soils on asparagine in wheat grain. In the first study we found that in a soil with low S availability, S fertility significantly increased overall grain quality and rheological characteristics as well as increasing yield. Protein composition was evaluated by the ratio of total polymeric/ total monomeric protein using high performance liquid chromatography. In both years, the ratio of polymeric to monomeric protein was increased by sulfur fertilization. Solvent retention capacity (SRC) was evaluated using the whole grain lactic acid-sodium dodecyl sulfate solvent retention test (lactic acid- SDS SRC). In 2018, S application increased the SRC from 217% to 308%. Sulfur application increased average farinograph stability from 9.2 min to 14.6 min. Farinograph stability was effectively predicted by the SRC test (R2=0.78). Free asparagine concentration decreased significantly in both years across all genotypes when S was applied. Although, in Chapter 2 we found that poor wheat quality in a S deficient soil was increased with S fertilizer application, we did not find a strong correlation between available S in the soil and wheat quality or free asparagine concentration in Chapter 3. In 2018 a S sufficient location, Ashland had the highest free asparagine concentration (37 [mu]mol/g) which was likely due to hot dry weather during grain fill. Thus, further investigation of factors influencing free asparagine in winter wheat is necessary for us to have a better understanding of how to decrease the risk of elevated levels. Information from this study will help winter wheat producers in the Great Plains diagnose sulfur deficiency and determine best practices for increasing grain quality and decreasing free asparagine concentration.

Book Effect of Nitrogen Fertilizer on Yield and Protein Content of Winter Wheat in Utah

Download or read book Effect of Nitrogen Fertilizer on Yield and Protein Content of Winter Wheat in Utah written by Howard Boyd Peterson and published by . This book was released on 1952 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Nitrogen in the Environment  Sources  Problems and Management

Download or read book Nitrogen in the Environment Sources Problems and Management written by R.F. Follett and published by Gulf Professional Publishing. This book was released on 2001-12-03 with total page 539 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nitrogen in the Environment: Sources, Problems, and Management is the first volume to provide a holistic perspective and comprehensive treatment of nitrogen from field, to ecosystem, to treatment of urban and rural drinking water supplies, while also including a historical overview, human health impacts and policy considerations. It provides a worldwide perspective on nitrogen and agriculture. Nitrogen is one of the most critical elements required in agricultural systems for the production of crops for feed, food and fiber. The ever-increasing world population requires increasing use of nitrogen in agriculture to supply human needs for dietary protein. Worldwide demand for nitrogen will increase as a direct response to increasing population. Strategies and perspectives are considered to improve nitrogen-use efficiency. Issues of nitrogen in crop and human nutrition, and transport and transformations along the continuum from farm field to ground water, watersheds, streams, rivers, and coastal marine environments are discussed. Described are aerial transport of nitrogen from livestock and agricultural systems and the potential for deposition and impacts. The current status of nitrogen in the environment in selected terrestrial and coastal environments and crop and forest ecosystems and development of emerging technologies to minimize nitrogen impacts on the environment are addressed. The nitrogen cycle provides a framework for assessing broad scale or even global strategies to improve nitrogen use efficiency. Growing human populations are the driving force that requires increased nitrogen inputs. These increasing inputs into the food-production system directly result in increased livestock and human-excretory nitrogen contribution into the environment. The scope of this book is diverse, covering a range of topics and issues from furthering our understanding of nitrogen in the environment to policy considerations at both farm and national scales.

Book Acrylamide in Food

    Book Details:
  • Author : Nigel G. Halford
  • Publisher : World Scientific Publishing Europe Limited
  • Release : 2019
  • ISBN : 9781786346582
  • Pages : 172 pages

Download or read book Acrylamide in Food written by Nigel G. Halford and published by World Scientific Publishing Europe Limited. This book was released on 2019 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Acrylamide, a chemical described as 'extremely hazardous' and 'probably carcinogenic to humans', was discovered in food in 2002. Its presence in a range of popular foods has become one of the most difficult issues facing not only the food industry but all stakeholders in the food supply chain and its oversight. Acrylamide is not present in raw food but forms from natural precursors during high-temperature (> 120 C) cooking and food processing. Fried, baked, roasted and toasted potato and cereal products, as well as coffee, are the major contributors to dietary exposure. This book comprehensively describes what is known about the toxicology of acrylamide, how it forms in food, the positions taken by food safety authorities and concurrent regulatory issues. It also covers the food industry's response, the mitigation measures adopted and how successful these have been in reducing our exposure to acrylamide. It then describes the genetic and agronomic approaches that have been taken to reduce the acrylamide-forming potential of major crops. Written by internationally-renowned experts in the field, Acrylamide in Food is detailed and informative, while being accessible to specialists and a general readership.

Book Hard Red Winter Wheat   the Effects of Seeding Date and Nitrogen Fertilization on Yield and Quality

Download or read book Hard Red Winter Wheat the Effects of Seeding Date and Nitrogen Fertilization on Yield and Quality written by University of Idaho. Agricultural Extension Service and published by . This book was released on 1971 with total page 5 pages. Available in PDF, EPUB and Kindle. Book excerpt: