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 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 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:

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 Effects of Seeding Date and Rate on Stand Establishment Herbage Yield and Forage Quality of Cave in Rock Switchgrass Panicum Virgatum L written by Terry Lynn Vassey and published by . This book was released on 1983 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Handbook of Bioenergy Crop Plants written by Chittaranjan Kole and published by CRC Press. This book was released on 2012-03-22 with total page 874 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the world's population is projected to reach 10 billion or more by 2100, devastating fossil fuel shortages loom in the future unless more renewable alternatives to energy are developed. Bioenergy, in the form of cellulosic biomass, starch, sugar, and oils from crop plants, has emerged as one of the cheaper, cleaner, and environmentally sustainab

Download or read book Switchgrass Panicum Virgatum L Forage Quality as Influenced by Interrelationships Among Biological Chemical Morphological and Anatomical Determinants written by Edward Keith Twidwell and published by . This book was released on 1987 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effects of Early Defoliation Upon Quality Factors of Switchgrass Panicum Virgatum L written by John Joseph Hunczak and published by . This book was released on 1992 with total page 468 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Switchgrass Panicum Virgatum L Yield and Photosynthetic Response to Simulated Insect Defoliation and Grasshopper Orthoptera Acrididae Feeding written by Fatima Mustafa and published by . This book was released on 2013 with total page 191 pages. Available in PDF, EPUB and Kindle. Book excerpt: Insect herbivory can affect morphology and physiological functions of plants. Defoliation caused by herbivores may alter photosynthetic rates of remaining plant tissues or reduce the leaf area and limit the photosynthate needed to fulfill the energy and nutritional requirements of the plants. The reduction in plant leaf area may reduce the quality and quantity of biomass, which is critical for bioenergy crops. Plants may also compensate for herbivory losses utilizing their energy and resulting in less vigorous plants.

Download or read book Evaluating Different Switchgrass Cultivars and Compost Treatments for Biofuel Production of Switchgrass Panicum Virgatum L written by Jessica D. Baculis and published by . This book was released on 2013 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sustainable Intercropping of Switchgrass and Hybrid Poplar for Bioenergy Production written by Emi Kimura and published by . This book was released on 2014 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Switchgrass (Panicum virgatum L.) is a perennial warm-season grass that has been selected as an important lignocellulosic feedstock to support bioenergy production. Intercropping of two perennial species, switchgrass and hybrid poplar (Populus spp), will maximize the benefits of perennial cropping system through improving land and water use efficiency, soil N cycles, and diversifying the ecosystem. However, establishment of switchgrass is hindered by the dormant seeds that produce weak seedlings in the fields. Limited information is available on switchgrass biomass production and forage quality in west of the Rocky Mountains under irrigation. The objectives of our study were to; (1) determine the influence of freeze-thaw treatment on the seed dormancy; (2) quantify the effect of freezing storage at -20°C or at -80°C for five storage lengths to enhance seedling vigor of seven seed lots of switchgrass; (3) determine the influence of hybrid poplar on switchgrass biomass, architecture, and land use efficiency of the two perennial species under irrigation; and (4) determine the influence of intercropping switchgrass with hybrid poplar on the forage quality of three switchgrass cultivars over multiple growing seasons. No freeze-thaw treatments were effective on breaking seed dormancy of all seed lots used in this study. The extreme temperatures may have increased seed damage possibly by damaging the seed coat. Seed storage at freezing temperatures enhanced seedling vigor through increasing germination percentage, seedling emergence speed, and total shoot and root DM regardless of storage length up to eight months of freezing storage. Switchgrass yield decreased each year under both cropping systems due to the water stress from excessive irrigation water that was supplied to maximize hybrid poplar growth. Despite the yield loss, land use efficiency of intercropping was maintained at LER 1.7. Significant quality differences developed after second production year due to slow growth rate under intercropping compared to monoculture cropping. Forage quality by plant component revealed that the influence of intercropping was different on leaves and stems. This work provides an understanding of switchgrass seed dormancy and effects of intercropping on biomass production and forage quality in the Pacific Northwest under irrigation.

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 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 Evaluating the Agronomic Performance of Switchgrass Panicum Virgatum L on Marginal Vs Prime Farmland written by Sergio J. Sosa and published by . This book was released on 2013 with total page 219 pages. Available in PDF, EPUB and Kindle. Book excerpt: Switchgrass (Panicum virgatum L.) is a warm-season perennial grass native to North America. The difference in biomass production between and within switchgrass ecotypes (upland and lowland) and populations due to genotype x environment interaction (GxE) has been documented. Breeding research for increased biomass production in switchgrass has been conducted on University research farms with prime farmland. This study aims to evaluate the agronomic performance of 14 cultivars and 45 high biomass producing clones of switchgrass in marginal vs. prime farmland. Additionally this study investigates the effects of increasing biodiversity (1 grass species, 3 grass species or 4 species-grass/legume combinations) on biomass production. The cultivars and biodiversity studies were seeded in 2008 and 2009 in six locations (Maryland, New Jersey, New York, Pennsylvania, South Dakota and Wisconsin) and three locations (New Jersey, New York, Pennsylvania), respectively, in paired fields (marginal vs. prime land). Each field had a nitrogen treatment 0 or 100 kg of N·ha-1·year-1. Stand establishment (% coverage), plant height (cm), tiller density (tillers·m-2) and dry biomass yield (Mg·ha-1) data was collected to determine agronomic performance. The clonal material was transplanted in 2009 in two locations (New Jersey and South Dakota). In addition to agronomic data collected, heading date, anthesis date (Julian date) and visual ratings for disease presence were recorded. Cultivars were shorter in marginal soils. For stand establishment and biomass yield, 50% of cultivars showed differences due to soil quality. For tiller density, 40% of the cultivars presented differences due to soil quality; some cultivars had higher tiller density in marginal soils. For the biodiversity study low diversity plots (one grass species) were not significantly different than yields of high diversity plots (four species-grass/legume). For the clone study, soil quality may have influenced a delay in flower initiation and other traits, such as plant height, etc. It was also observed that genotype may have been the most influential factor in tolerance to anthracnose (Colletotrichum navitas) and rust (Puccinia emaculata).

Download or read book Warm season C4 Grasses written by Lowell E. Moser and published by . This book was released on 2004 with total page 1208 pages. Available in PDF, EPUB and Kindle. Book excerpt: The only review of warm season and tropical grasses that covers all the major genera. The warm season grasses are the major forage resources for ruminant livestock production in the tropical and subtropical areas of the world. In the U.S. warm season grasses are also playing a major role in prairie restoration. A companion book to Cool Season Forage Grasses.--Provided by publisher.

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 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.