Download or read book Seed Yield and Seed Quality of Switchgrass Panicum Virgatum L in Response to Nitrogen Level and Row Spacing written by Paul Charles Kassel and published by . This book was released on 1981 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Effect of Nitrogen Mefluidide and Maturity on Switchgrass Panicum Virgatum L Forage Quality and Yield written by Pamela A. Porter and published by . This book was released on 1985 with total page 286 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agronomy News written by and published by . This book was released on 1982 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sept.-Oct. issue includes list of theses and dissertations for U.S. and Canadian graduate degrees granted in crop science, soil science, and agronomic science during the previous academic year.
Download or read book Seed and Forage Yield and Quality for Partially Defoliated Switchgrass Panicum Virgatum L written by Gregory Stephen Reigh and published by . This book was released on 1982 with total page 388 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Establishment Fertility and Harvest Management for Optimizing Switchgrass Yield and Quality as a Cellulosic Ethanol Feedstock in the Great Lakes Region written by Katherine Kelly Withers and published by . This book was released on 2010 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Alternative Energy and Shale Gas Encyclopedia written by Jay H. Lehr and published by John Wiley & Sons. This book was released on 2016-04-20 with total page 910 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive depository of all information relating to the scientific and technological aspects of Shale Gas and Alternative Energy Conveniently arranged by energy type including Shale Gas, Wind, Geothermal, Solar, and Hydropower Perfect first-stop reference for any scientist, engineer, or student looking for practical and applied energy information Emphasizes practical applications of existing technologies, from design and maintenance, to operating and troubleshooting of energy systems and equipment Features concise yet complete entries, making it easy for users to find the required information quickly, without the need to search through long articles
Download or read book Evaluation of Switchgrass Panicum Virgatum L Root Characteristics as Influenced by Row Spacing and Cultivar written by Arjun Pandey and published by . This book was released on 2012 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings written by American Forage and Grassland Council and published by . This book was released on 1995 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Switchgrass Panicum Virgatum L Intraspecific Variation and Temperature Tolerance Classification Using in Vitro Seed Germination Assay written by Ramdeo Seepaul and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: An experiment was conducted to determine temperature effects on switchgrass seed germination, a native species with feedstock potential for the biofuel industry. Stratified seeds were germinated at constant temperatures, 15 to 45°C with 5°C interval. Maximum seed germination (MSG) and germination rate (GR), estimated by fitting sigmoid function to germination-time series data, varied among genotypes. Quadratic and bilinear models best described the MSG and GR responses to temperature, respectively. The mean cardinal temperatures, minimum, optimum and maximum, were 8.1, 26.6 and 45.1°C for MSG and 11.1, 33.1 and 46.0°C for GR, respectively, varied among genotypes. Genotypes were classified for temperature tolerance based on cumulative temperature response index: 'Summer' and 'Expresso' were identified as the most heat- and cold-tolerant genotypes, respectively. The functional algorithms and identified tolerant genotypes may be used to improve switchgrass models for field applications and breeding programs to develop new genotypes with enhanced tolerance for niche environments.
Download or read book Forestburg Switchgrass written by and published by . This book was released on 1988 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dacotah Switchgrass written by and published by . This book was released on 1990 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Assessing Best Management Practices for Improving Switchgrass Establishment and Production written by Amir Sadeghpour and published by . This book was released on 2014 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: Switchgrass (Panicum virgatum L.) is a C4-grass indigenous to North America being considered as the "model" energy crop. Switchgrass is difficult to establish and first-year stand failure often challenge the large scale production of switchgrass. Reliable establishment methods and effective weed management practices to produce a harvestable biomass in the establishment year are required. Also, to maximize the economic viability of switchgrass production, appropriate nutrient management and harvests are needed. Thus, we conducted researches to improve switchgrass establishment and production. These studies ranged from finding the most promising switchgrass variety to adjusting switchgrass seeding rate, determine the most appropriate seeding date, seeding methods, weed management, nitrogen application, and harvest management. Currently Cave-in-Rock is a highly suggested upland variety for northern region of United States. Results of our variety trials both at establishment and production level indicated that Carthage and Shawnee could also be considered as promising varieties in northern regions of United States. In a four-year study, Carthage consistently produced higher biomass yield compared with other varieties. A vigor test trial was suggested for adjusting switchgrass seeding rate and we found significant differences between the required seeding rate for producing acceptable first-year biomass in fertile soils and marginal soils. While approximately 7 kg ha-1 seeding rate might be sufficient for fertile soils, 14 kg ha-1 might be required to produce enough established seedling for the same biomass production in a marginal soil. An early planting of switchgrass was not as effective as a late planting in weed suppression but plants were more advanced morphologically thus, produced acceptable biomass yield with root system which ensures successful second-year production. Among cover crops, oat outperformed others (Fallow and Rye) with both suppressing weeds and improving switchgrass establishment. Results suggested drastic differences between no-till planting and seeding with cultipacker seeder where no-till planting into oat produced significantly higher biomass yield compared with cultipacker seeder. A firm seedbed is also another desirable method of planting where significantly improved switchgrass establishment and production was observed with 2 times rolling/cultipacking after seeding. Our findings indicated that application of herbicides is strongly required in the establishment year where a Broad Spectrum application of atrazine, quinclorac, 2,4-D, and dicamba improved switchgrass establishment through effective control of weeds. We found a late-fall harvest could improve switchgrass quality for combustion (less moisture, ash, and nutrient content) without yield reduction for many years. When switchgrass was harvested in late-fall, no response to N application was found. Overall, it is proposed that a no-till planting of switchgrass into oat cover crop with herbicide application planted in early-June could provide a successful stand and later, a late-fall harvest without any N application could maintain crop productivity with acceptable biomass yield and quality for several years.
Download or read book Genotype Nitrogen and Harvest Management Effects on Switchgrass Production written by Ramdeo Seepaul and published by . This book was released on 2014 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Use of switchgrass (Panicum virgatum L.) as a forage and feedstock species requires knowledge of fertilizer application rates and harvest timing to optimize yield and quality. Three experiments were conducted at the Brown Loam Branch Experiment Station, Raymond, MS to quantify nitrogen rates, harvest timing, and genotype effects on biomass, nutrient removal, chemical composition and ethanol yield. Dry matter yield varied with N rate, genotype, harvest frequency and timing. Yields among genotypes were: NF/GA992 = NF/GA001 (13.7 Mg ha−1) > Alamo (11.6 Mg ha−1) > Cave-in-Rock (6.1 Mg ha−1). A single (9.5 Mg ha−1) or two harvests annually (10.3 Mg ha−1) produced the greatest dry matter yield. As harvest frequency increased from three (7.3Mg ha−1) to six (5.9 Mg ha−1) harvests annually, yield decreased. There was an effect of N application on yield, but not at application rates greater than 80 kg ha−1. Nitrogen did not consistently affect tissue nutrient concentrations but more frequent harvests led to increased nutrient concentration. Nutrient removal responses to N application were mostly similar to the yield responses. Nitrogen use efficiency and recovery declined as N rate increased. Estimated ethanol yield averaged 162 L Mg−1 for Alamo, NF/GA001 and NF/GA992 . A single (2.4 kL ha−1) or 2 harvests annually (2.3 kL ha−1) produced the greatest ethanol production and was correlated with by biomass yield. Nutrient removal, N use efficiency, N recovery and ethanol production were related to biomass yields rather than chemical composition differences. The findings in this dissertation will enable a database on management effects on ethanol yield and composition, enhance current biomass models, facilitate improved management of feedstock production inputs and improve feasibility of alternative fuel development.
Download or read book Nutrient Sources and Harvest Frequency for Quality Dual Purpose Switchgrass Panicum Virgatum L Production and the Effect of PH Nitrogen and Phosphorus on Biomass and Quality of Two Teff Eragrostis Teff Zucc Trotter Varieties written by Yesuf Assen Mohammed and published by . This book was released on 2012 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Compendium of Bioenergy Plants written by Hong Luo and published by CRC Press. This book was released on 2014-03-14 with total page 463 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains the most comprehensive reviews on the latest development of switchgrass research including the agronomy of the plant, the use of endophytes and mycorrhizae for biomass production, genetics and breeding of bioenergy related traits, molecular genetics and molecular breeding, genomics, transgenics, processing, bioconversion, biosyst
Download or read book 1995 American Forage and Grassland Council written by and published by . This book was released on 1995 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Effects of Seed Weight on Seedling Establishment Forage Yield and Seed Production Characteristics of Switchgrass Panicum Virgatum L written by Paul O. Johnson and published by . This book was released on 1983 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
