Effect of Plant Pupulations and Nitrogen Levels on Biomass Yield of Maize and Sweet Sorghum and Its Utility in Ethanol and Biogas Production

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ISBN 13 :
Total Pages : 95 pages
Book Rating : 4.:/5 (698 download)

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Book Synopsis Effect of Plant Pupulations and Nitrogen Levels on Biomass Yield of Maize and Sweet Sorghum and Its Utility in Ethanol and Biogas Production by : S. D. Sahib

Download or read book Effect of Plant Pupulations and Nitrogen Levels on Biomass Yield of Maize and Sweet Sorghum and Its Utility in Ethanol and Biogas Production written by S. D. Sahib and published by . This book was released on 1991 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Bio-energy for Rural Energisation

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Publisher : Concept Publishing Company
ISBN 13 : 9788170226703
Total Pages : 312 pages
Book Rating : 4.2/5 (267 download)

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Book Synopsis Bio-energy for Rural Energisation by : R. C. Maheshwari

Download or read book Bio-energy for Rural Energisation written by R. C. Maheshwari and published by Concept Publishing Company. This book was released on 1997 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Managing Sweet Sorghum for Optimum Ethanol Yield in Missouri

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ISBN 13 :
Total Pages : 133 pages
Book Rating : 4.:/5 (897 download)

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Book Synopsis Managing Sweet Sorghum for Optimum Ethanol Yield in Missouri by : Michael Joseph William Maw

Download or read book Managing Sweet Sorghum for Optimum Ethanol Yield in Missouri written by Michael Joseph William Maw and published by . This book was released on 2013 with total page 133 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sweet sorghum has the potential in Missouri for production as a biofuel feedstock, but little is known of the crop's yields and appropriate nitrogen management for optimizing ethanol yields. This thesis is a collection of three field studies examining the potential for sweet sorghum (Sorghum bicolor (L.) Moench) to be adopted as a biofuel feedstock for ethanol production in the Midwestern U.S. Limited research exists examining the optimum nitrogen fertilizer rate for maximum ethanol yields as well as sweet sorghum's adaptability to the lower Midwestern states. The first study included testing the effects of five N fertilizer rates (0, 56, 112, 168, 224 kg-N ha-1) on the production of two sweet sorghum cultivars (Dale and Top 76-6) over three years in central Missouri. Yields measured included dry matter, stem juice, Brix, fermentable sugar, theoretical juice ethanol, theoretical lignocellulosic ethanol, and total theoretical ethanol. N fertilizer treatment mostly increased yields, as total dry matter yield averaged 16.8 Mg ha-1, fermentable sugar yield averaged 1055 kg ha-1, and total ethanol yield averaged 5828 L ha-1 . The optimal range for N fertilizer rates was between 112 and 168 kg N ha-1. The second study included determining the above-ground plant N concentration, plant N content, N recovery efficiency, and physiological N-use efficiency of sorghum from the first study. Nitrogen treatment significantly affected plant N concentration and N content. Greater yields resulted in greater N recovery efficiency but did not always result in greater N-use efficiency. The optimum range for highest nitrogen recovery and use efficiencies was identified as 0-112 kg N ha-1 . The purpose of the third study was to better understand sweet sorghum's affect on soil organic carbon. This involved comparing the effects of an alternative sweet sorghum--soybean (Glycine max L.) rotation to a maize (Zea mays L.)--soybean rotation at three study sites in Missouri and Arkansas on yields, soil organic carbon, the labile soil carbon fraction and the physically-stabilized fraction. Sweet sorghum ethanol yields were greater than maize yields across sites, but the soil carbon similarly decreased regardless of crop and location. Sweet sorghum is a high-yielding biomass feedstock that shows promise for production in Missouri, especially in marginal lands. With proper nitrogen fertilizer management sweet sorghum is shown to be an efficient plant for ethanol yield, but it may negatively affect soil organic carbon following land-use changes for biofuel production.

Managing High Biomass Sorghum for Optimum Ethanol Yield in Missouri

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ISBN 13 :
Total Pages : 147 pages
Book Rating : 4.:/5 (99 download)

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Book Synopsis Managing High Biomass Sorghum for Optimum Ethanol Yield in Missouri by : Michael Joseph William Maw

Download or read book Managing High Biomass Sorghum for Optimum Ethanol Yield in Missouri written by Michael Joseph William Maw and published by . This book was released on 2016 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: High Biomass Sorghum (HBS) has potential for production as a biofuel feedstock in Missouri, but little is known of the crop’s yield and appropriate nitrogen (N) management for optimizing ethanol yields, especially in a low-input cropping system on marginal lands. This dissertation is a collection of four studies examining the potential for HBS (Sorghum bicolor (L.) Moench) to be adopted as a biofuel feedstock for ethanol production in the Midwestern U.S. Limited research exists of studying HBS crop yield response to N fertilizer in the Midwest to determine the optimum N rate for maximizing N recovery efficiency (NRE) and N use efficiency (NUE). The first study tested the effects of five N fertilizer rates (0, 56, 112, 168, 224 kg N ha-1 ) on the production of two HBS hybrids (ES 5200 and ES 5201) over two years in central Missouri. Yields of stem and leaf dry matter (DM), and lignocellulosic ethanol (LEY) were measured. Tissue N concentration of leaves and stems were used to calculate N content, NRE, and physiological NUE. Yield of HBS was greatest at 56 kg N ha-1 and above, but NRE and NUE decreased at higher N rates. Reduced rainfall in the second year contributed to no N response in yield. The second study determined the corresponding HBS leaf and stem concentration and contents of 11 macro- and micronutrients from the first study above. Response to N fertilizer rate was controlled by differences between years in rainfall. Reduced DM in the second year resulted in increased concentrations, but less elemental uptake and a resultant delayed N response demonstrate the strong link between nutrient uptake and plant growth following the precipitation. A desire to test HBS yield against other annual bioenergy crops led to the third study, which included establishing long-term research plots at two marginal sites, in central Missouri and southwest Missouri, comparing HBS to maize (Zea mays L.) and sweet sorghum for potential ethanol yield in five years (2010-2014) given minimal inputs. Each crop was planted in a two-year rotation with soybean (Glycine max L.). Theoretical ethanol yields of sweet sorghum and HBS were similar and greater than maize at both locations. Drought severely limited yields of all three crop rotations, but HBS was the most stable in yield across the five years. These results provided a beginning understanding of the stability of HBS on marginal Missouri cropland. Study four involved collecting soil cores from each of the crop plots in study three in 2010, 2011, and 2014 to understand the impact of HBS, compared to maize and sweet sorghum, on soil organic carbon (SOC) concentration and stock, as well as the labile soil carbon fraction (AC). Concentrations of SOC and AC within all crop plots decreased over the first two years at both sites, but after five years the SOC concentrations returned to levels similar to initial 2010 levels, while the AC concentrations decreased. The southwestern Missouri site had a slight positive trend in AC concentration from 2011 to 2014, suggesting beneficial effects from the biofuel feedstocks. Due to the occurrence of drought during the study, the findings have relevance for evaluating land management impacts on SOC in a changing climate. High biomass sorghum is a high-yielding biomass feedstock that shows promise for production in Missouri, especially on marginal lands. Even moderate rates of N fertilizer have the potential to positively increase DM and theoretical ethanol yield in adequate rainfall years. However, intensive nutrient management may prove necessary with continual DM removal. The short-term trend of HBS stemming SOC loss compared to maize production on marginal sites provides support for continued research into the potential for HBS production in Missouri.

Sweet Sorghum and Nitrogen

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Publisher : LAP Lambert Academic Publishing
ISBN 13 : 9783659180354
Total Pages : 204 pages
Book Rating : 4.1/5 (83 download)

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Book Synopsis Sweet Sorghum and Nitrogen by : Khaled Miri

Download or read book Sweet Sorghum and Nitrogen written by Khaled Miri and published by LAP Lambert Academic Publishing. This book was released on 2012-07 with total page 204 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sweet sorghum is versatile as a high value crop. Besides, bio-fuel, feed and fodder, it is very interesting for low cost and nutritious food . It has the potential of becoming a useful energy crop. It has been evaluated as an alcohol fuel crop with a promising future. This crop is attractive because of the easy accessibility of readily fermentable sugars combined with very high yields of green biomass suitable for production of more quantity of ethanol per unit time, per unit cost and per unit of water used . In India, it has been used for nearly 150 years to produce concentrated syrup with a distinctive flavor due to its characteristic of juicy stalks high in sugar. The ethanol production process is more Eco-friendly than that of sugarcane and its molasses (Morris, 2006). Nitrogen fertilizer combined with other inputs play crucial roles in yield and overall quality of sweet sorghum products. The present book is parts of studies which were conducted to determine suitable genotype and nitrogen level for higher productivity, nitrogen use efficiency and economic returns from sweet sorghum cultivation.

Agrindex

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ISBN 13 :
Total Pages : 768 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis Agrindex by :

Download or read book Agrindex written by and published by . This book was released on 1991 with total page 768 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Energy Storage, Grid Integration, Energy Economics, and the Environment

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Publisher : CRC Press
ISBN 13 : 1000449025
Total Pages : 290 pages
Book Rating : 4.0/5 (4 download)

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Book Synopsis Energy Storage, Grid Integration, Energy Economics, and the Environment by : Radian Belu

Download or read book Energy Storage, Grid Integration, Energy Economics, and the Environment written by Radian Belu and published by CRC Press. This book was released on 2019-09-27 with total page 290 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book covers energy storage systems, bioenergy and hydrogen economy, grid integration of renewable energy systems, distributed generation, economic analysis, and environmental impacts of renewable energy systems. The overall approaches are interdisciplinary and comprehensive, covering economic, environmental, and grid integration issues as well as the physical and engineering aspects. Core issues discussed include mechanical, electrical, and thermal energy storage systems, batteries, fuel cells, biomass and biofuels, hydrogen economy, distributed generation, a brief presentation of microgrids, and in-depth discussions of economic analysis and methods of renewable energy systems, environmental impacts, life-cycle analysis, and energy conservation issues. With several solved examples, holistic material presentation, in-depth subject matter discussions and self-content material presentation, this textbook will appeal strongly to students and professional and nonprofessional readers who wish to understand this fascinating subject. Readers are encouraged to solve the problems and questions, which are useful ways to understand and apply the concepts and the topics included.

Bibliography of Agriculture with Subject Index

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ISBN 13 :
Total Pages : 1238 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis Bibliography of Agriculture with Subject Index by :

Download or read book Bibliography of Agriculture with Subject Index written by and published by . This book was released on 1987-10 with total page 1238 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Effects of Fertilizers on Biomass, Sugar Content and Ethanol Production of Sweet Sorghum

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (115 download)

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Book Synopsis Effects of Fertilizers on Biomass, Sugar Content and Ethanol Production of Sweet Sorghum by : Tran Dang Xuan

Download or read book Effects of Fertilizers on Biomass, Sugar Content and Ethanol Production of Sweet Sorghum written by Tran Dang Xuan and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Sweet sorghum (Sorghum bicolour) is a promising alternative crop for bioethanol production in developing countries. However, to extend the cultivative area of this crop, it needs to develop an appropriate growing protocol for farmers. This chapter describes the examination of different doses of fertilizers combined with manure and micronutrients, in various applied times, on biomass, sugar content and ethanol production of sweet sorghum. It was observed that the application of 90 N + 90 P2O5 + 60 K2O provided maximum stem yield and optimum contents of sugar and ethanol yield, however nontreatment of any among P, P2O5 and K2O caused significant reduction of biomass and ethanol production. Higher fertilization >90 N may provide greater productivity of this crop but it may cause lodging and economic deficit for farmers in developing countries. It was also found that the applied times of fertilization should be at 3-4 to 7-8 leaf stage. In contrast, when the fertilization was as close to the flowering stage caused remarkable reduction of stem yield and ethanol production. The supplementation of (NH4)2MO7O2.4H2O at 5 kg/ha provided an increase of 10-12 tons/ha of stem yield and a remarkable enrichment of ethanol production. Findings of this study are useful for farmers and agricultural extensionists to promote biomass and ethanol productivity of this crop for bioethanol production. This research also highlights a greater possibility of exploiting sweet sorghum cultivation in infertile and hilly, abandoned areas for ethanol production.

Plant Biomass Conversion

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Publisher : John Wiley & Sons
ISBN 13 : 0470959096
Total Pages : 376 pages
Book Rating : 4.4/5 (79 download)

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Book Synopsis Plant Biomass Conversion by : Elizabeth E. Hood

Download or read book Plant Biomass Conversion written by Elizabeth E. Hood and published by John Wiley & Sons. This book was released on 2011-01-20 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt: A whole host of motivations are driving the development of the “renewables” industry— ranging from the desire to develop sustainable energy resources to the reduction of dangerous greenhouse gases that contribute to global warming. All energy utilized on the earth is ultimately derived from the sun through photosynthesis—the only truly renewable commodity. As concerns regarding increasing energy prices, global warming and renewable resources continue to grow, so has scientific discovery into agricultural biomass conversion. Plant Biomass Conversion addresses both the development of plant biomass and conversion technology, in addition to issues surrounding biomass conversion, such as the affect on water resources and soil sustainability. This book also offers a brief overview of the current status of the industry and examples of production plants being used in current biomass conversion efforts.

Heterosis and Composition of Sweet Sorghum

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (76 download)

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Book Synopsis Heterosis and Composition of Sweet Sorghum by : Rebecca J. Corn

Download or read book Heterosis and Composition of Sweet Sorghum written by Rebecca J. Corn and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Sweet sorghum (Sorghum bicolor) has potential as a bioenergy feedstock due to its high yield potential and the production of simple sugars for fermentation. Sweet sorghum cultivars are typically tall, high biomass types with juicy stalks and high sugar concentration. These sorghums can be harvested, milled, and fermented to ethanol using technology similar to that used to process sugarcane. Sweet sorghum has advantages in that it can be planted by seed with traditional planters, is an annual plant that quickly produces a crop and fits well in crop rotations, and it is a very water-use efficient crop. Processing sweet sorghum is capital intensive, but it could fit into areas where sugarcane is already produced. Sweet sorghum could be timed to harvest and supply the sugar mill during the off season when sugarcane is not being processed, be fit into crop rotations, or used in water limiting environments. In these ways, sweet sorghum could be used to produce ethanol in the Southern U.S and other tropical and subtropical environments. Traditionally, sweet sorghum has been grown as a pureline cultivar. However, these cultivars produce low quantities of seed and are often too tall for efficient mechanical harvest. Sweet sorghum hybrids that use grain-type seed parents with high sugar concentrations are one way to overcome limitation to seed supply and to capture the benefits of heterosis. There are four objectives of this research. First to evaluate the importance of genotype, environment, and genotype-by-environment interaction effects on the sweet sorghum yield and composition. The second objective is to determine the presence and magnitude of heterosis effects for traits related to sugar production in sweet sorghum. Next: to study the ability of sweet sorghum hybrids and cultivars to produce a ratoon crop and determine the contribution of ratoon crops to total sugar yield. The final objective is to evaluate variation in composition of sweet sorghum juice and biomass. Sweet sorghum hybrids, grain-type sweet seed parents, and traditional cultivars that served as male parents were evaluated in multi-environment trials in Weslaco, College Station, and Halfway, Texas in 2007 and 2008. Both genotype and environment influenced performance, but environment had a greater effect than genotype on the composition of sweet sorghum juice and biomass yield. In comparing performance, elite hybrids produced fresh biomass and sugar yields similar to the traditional cultivars while overcoming the seed production limitations. High parent heterosis was expressed among the experimental hybrids for biomass yield, sugar yield and sugar concentration. Additional selection for combining ability would further enhance yields and heterosis in the same hybrid. Little variation was observed among hybrids for juice and biomass composition suggesting that breeding efforts should focus on yield before altering plant composition.

Effects of Different Light Intensities, Nitrogen Levels and Population Densities on Grain Sorghum

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ISBN 13 :
Total Pages : 270 pages
Book Rating : 4.:/5 (79 download)

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Book Synopsis Effects of Different Light Intensities, Nitrogen Levels and Population Densities on Grain Sorghum by : C. D. Carcallas

Download or read book Effects of Different Light Intensities, Nitrogen Levels and Population Densities on Grain Sorghum written by C. D. Carcallas and published by . This book was released on 1975 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt: Grain sorghum (Cosor 3) was grown under three light regimes, i.e., in full sunlight, 25% shade, and 50% shade at three levels each of nitrogen and plant population density to evaluate its yield and other, important characteristicssuch as: leaf lenght, leaf width, leaf area index,100-grain weight, grains per panicle, panicle yield, grain-stover ratio, threshing percentage, total dry matter production, panicle lenght, plant height and number of days to blooming. In addition, leaf nitratereductase activity and grain tannin concentration were analyzed. Plantpopulation densities used were 150, 000, 200, 000 and 250,000 plt/ha; the nitrogen levels at 0, 75, and 150 Kg N/ha; and 0, 25, 50 per cent shading. The statistical design split-split plot was used with plant population density as the main plot, nitrogen level as the sub plot, and light intensity as the sub-sub plot. The experiment was conducted during the dry season (January-April, 1975) at the Central Experiment Station, University of the Philippines at Los Banos, Laguna. The yielding capacity of grain sorghum (Cosor 3) in terms of its total dry matter,grain yield, and grain tannin concentration was reduced at low light intensyti. The results have shown that: l. Grain sorghum (Cosor 3) yielded differently at different combinations of plants density, nitrogenlevels, and light intensity. 2. Increasing plant population density up to 250,000 plt/ha consistently resulted in reduction of such characters as: leaf length, leaf width, plant height, and number of grains perpanicle. In spite of the depressive effects of dense population on individual plants, grain yield is co compensated by the increase in number of panicles per unit area. Higher plant population density is advantageous only at high light intensity, while at lower light intensity lower plant population is preferred. 3. Fertilized plants matured 10 days earlier than the unfertilized. Plants treated with 150 Kg N/ha produced higher grain yield at higher light intensity. Under shaded condition, grain yields from 75 and 150 Kg N/ha were comparable. 4. Grain tannin concentration was lower at high nitrogen rates. At high light intensity, grain tannin concentration was also high. 5. Leaf nitrate reductase activity was maximum at 25% shade and ao lower nitrogen level. At higher nitrogen rates, maximum nitrate reductase activity was obtained from the unshaded plants.

Crop Model Review and Sweet Sorghum Crop Model Parameter Development

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (86 download)

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Book Synopsis Crop Model Review and Sweet Sorghum Crop Model Parameter Development by : Seth A. Perkins

Download or read book Crop Model Review and Sweet Sorghum Crop Model Parameter Development written by Seth A. Perkins and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Opportunities for alternative biofuel feedstocks are widespread for a number of reasons: increased environmental and economic concerns over corn production and processing, limitations in the use of corn-based ethanol to 57 billion L (15 billion gal) by the Energy Independence and Security Act (US Congress, 2007), and target requirements of 136 billion L (36 billion gal) of renewable fuel production by 2022. The objective of this study was to select the most promising among currently available crop models that have the potential to model sweet sorghum biomass production in the central US, specifically Kansas, Oklahoma, and Texas, and to develop and test sweet sorghum crop parameters for this model. Five crop models were selected (CropSyst, CERE-Sorghum, APSIM, ALMANAC, and SORKAM), and the models were compared based on ease of use, model support, and availability of inputs and outputs from sweet sorghum biomass data and literature. After reviewing the five models, ALMANAC was selected as the best suited for the development and testing of sweet sorghum crop parameters. The results of the model comparison show that more data are needed about sweet sorghum physiological development stages and specific growth/development factors before the other models reviewed in this study can be readily used for sweet sorghum crop modeling. This study used a unique method to calibrate the sweet sorghum crop parameter development site. Ten years of crop performance data (Corn and Grain Sorghum) for Kansas Counties (Riley and Ellis) were used to select an optimum soil water (SW) estimation method (Saxton and Rawls, Ritchie et al., and a method that added 0.01 m m−1 to the minimum SW value given in the SSURGO soil database) and evapotranspiration (ET) method (Penman-Montieth, Priestley-Taylor, and Hargraeves and Samani) combination for use in the sweet sorghum parameter development. ALMANAC general parameters for corn and grain sorghum were used for the calibration/selection of the SW/ET combination. Variations in the harvest indexes were used to simulate variations in geo-climate region grain yield. A step through comparison method was utilized to select the appropriate SW/ET combination. Once the SW/ET combination was selected the combination was used to develop the sweet sorghum crop parameters. Two main conclusions can be drawn from the sweet sorghum crop parameter development study. First, the combination of Saxton and Rawls (2006) and Priestley-Taylor (1972) (SR-PT) methods has the potential for wide applicability in the US Central Plains for simulating grain yields using ALMANAC. Secondly, from the development of the sweet sorghum crop model parameters, ALMANAC modeled biomass yields with reasonable accuracy; differences from observed biomass values ranged from 0.89 to 1.76 Mg ha −1 (2.8 to 9.8%) in Kansas (Riley County), Oklahoma (Texas County), and Texas (Hale County). Future research for sweet sorghum physiology, Radiation Use Efficiency/Vapor Pressure Deficit relationships, and weather data integration would be useful in improving sweet sorghum biomass modeling.

The Effects of Nitrogen Fertilization on Bioenergy Sorghum Yield and Quality

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (84 download)

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Book Synopsis The Effects of Nitrogen Fertilization on Bioenergy Sorghum Yield and Quality by : Szilvia Katalin Zilahi-Sebess

Download or read book The Effects of Nitrogen Fertilization on Bioenergy Sorghum Yield and Quality written by Szilvia Katalin Zilahi-Sebess and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Forage sorghum (Sorghum bicolor L. Moench) is one of the prospective crops that may be used to produce biofuels in the future. Therefore, it is of interest to find management practices that improve both the production of biomass yield and quality. This study presents observations of the effects different rates of nitrogen fertilization have on yield, tissue nitrogen content, and tissue quality measures such as ash, lignin, sucrose, xylans, cellulose and starch content, based on three years of field trials from the Brazos Bottom and one year of field trials from near China, Texas. Data for the quality components were obtained using near infrared spectroscopy, with the exception of tissue nitrogen which was determined by using the dry combustion method. This study has showed fertilizer nitrogen had a strong positive correlation with the tissue nitrogen of sorghum biomass. Changes in tissue quality in relationship with fertilizer nitrogen levels and tissue nitrogen concentration were also observed. Ash showed a strong positive and sucrose showed a strong negative correlation to both iv tissue nitrogen concentration and fertilizer nitrogen application. Similarly to sucrose, starch also decreased with higher nitrogen levels and lignin was found to increase slightly. The concentration of cellulose and xylans were very weakly affected by nitrogen application and nitrogen concentration.

Biomass and Ethanol Production of Sweet Sorghum Varieties as Influenced by Plant Densities, Nitrogen and Allelogenic Tree Biomass Application

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ISBN 13 :
Total Pages : 110 pages
Book Rating : 4.:/5 (698 download)

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Book Synopsis Biomass and Ethanol Production of Sweet Sorghum Varieties as Influenced by Plant Densities, Nitrogen and Allelogenic Tree Biomass Application by : J. V. N. S. Prasad

Download or read book Biomass and Ethanol Production of Sweet Sorghum Varieties as Influenced by Plant Densities, Nitrogen and Allelogenic Tree Biomass Application written by J. V. N. S. Prasad and published by . This book was released on 1998 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Sorghum Improvement as Biofuel Feedstock

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (731 download)

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Book Synopsis Sorghum Improvement as Biofuel Feedstock by : Jayfred Gaham Villegas Godoy

Download or read book Sorghum Improvement as Biofuel Feedstock written by Jayfred Gaham Villegas Godoy and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Sorghum [Sorghum bicolor (L.) Moench] is listed as one of the potential feedstock sources for biofuel production. While sorghum grain can be fermented into ethanol in a similar way as maize, the greatest potential of the crop is based on its massive biomass and sugar rich juices. Thus development of the crop as alternative energy source requires improvement of these traits. The objectives of this study were (1) to determine the mode of inheritance of traits related to ethanol production and identify suitable genetic sources for use in breeding programs, and (2) to evaluate the potential of low lignin mutations for biomass feedstock production and assess biotic stress risks associated with deployment of the mutations. The study consisted of three related experiments: (i) estimating the combining ability of selected sweet and high biomass sorghum genotypes for biofuel traits and resistance to stalk lodging, (ii) determine the impact of brown mid-rib mutations on biofuel production and their reaction to infection by Macrophomina phaseolina and Fusarium thapsinum, and (iii) assess the reaction of low lignin mutants to green bug feeding. In the first experiment six sorghum genotypes of variable characteristics (PI193073, PI257602, PI185672, PI195754, SC382 and SC373) were crossed to three standard seed parent lines ATx3042, ATx623 and ATx399. The resulting hybrids and the parents were evaluated at four locations, three replications during 2009 and 2010 seasons. Data were collected on phenology, plant height, juice yield, °brix score and biomass production. In the second experiment, two brown mid-rib mutations (bmr6 and bmr12) and their normal versions were studied in four forage sorghum backgrounds (Atlas, Early Hegari, Kansas Collier and Rox Orange). The experiment was planted in four replications and at 14 d after flowering five plants in a plot were artificially infected with F. thapsinum and another five with M. phaseolina. The plants were harvested and rated for disease severity (lesion length and nodes crossed). Another five normal plants in each plot were harvested and used to determine biofuel traits (juice yield, °brix score and biomass). In the third experiment, a subset of entries evaluated in experiment II and three tolerant and susceptible checks were tested for greenbug feeding damage. Biotype K greenbug colony was inoculated to each genotype using double sticky foam cages. Feeding damage was assessed as percent chlorophyll loss using SPAD meter. There was significant general combining ability (GCA) effect among the male entries for juice yield, stem obrix and biomass production indicating that these traits are controlled by additive genes. Lines PI257602 and PI185672 in particular, had the highest GCA for all the traits and should serve as excellent breeding materials. There was no significant difference among the bmr mutants and between the bmr and normal genotypes for both stalk rot and greenbug damage. In conclusion, juice yield, °brix and biomass are largely controlled by additive genes and hence are amenable to genetic manipulation. The bmr mutations despite their impact on lignin content do not increase risk of attack by stalk rot pathogens and greenbugs and thus can be deployed for biofuel production without incurring losses to these factors.

Effects of Nitrogen Levels on Yield and Composition of Sorghum and Maize

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ISBN 13 :
Total Pages : 61 pages
Book Rating : 4.:/5 (963 download)

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Book Synopsis Effects of Nitrogen Levels on Yield and Composition of Sorghum and Maize by : Azaham Abidin

Download or read book Effects of Nitrogen Levels on Yield and Composition of Sorghum and Maize written by Azaham Abidin and published by . This book was released on 1977 with total page 61 pages. Available in PDF, EPUB and Kindle. Book excerpt: