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Evaluation Of Simulated Fall Freeze Planting Date And Cultivar Maturity In Soybean
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Book Synopsis Evaluation of Simulated Fall Freeze, Planting Date, and Cultivar Maturity in Soybean by : Mark Allen Halvorson
Download or read book Evaluation of Simulated Fall Freeze, Planting Date, and Cultivar Maturity in Soybean written by Mark Allen Halvorson and published by . This book was released on 1994 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Climatological Constraints of a Wheat-soybean Double-cropping System in the Great Lakes Region by : Colleen Marie Garrity
Download or read book Climatological Constraints of a Wheat-soybean Double-cropping System in the Great Lakes Region written by Colleen Marie Garrity and published by . This book was released on 1999 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1976 with total page 1732 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Soybean Cultivar Evaluation Techniques for Late Planting Dates by : David Yves Lanclos
Download or read book Soybean Cultivar Evaluation Techniques for Late Planting Dates written by David Yves Lanclos and published by . This book was released on 1997 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Influence of Planting Date and Cultivar Maturity on Sudden Death Syndrome of Soybean by : Stephen Karanja Kiarie
Download or read book Influence of Planting Date and Cultivar Maturity on Sudden Death Syndrome of Soybean written by Stephen Karanja Kiarie and published by . This book was released on 1989 with total page 146 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 1995 with total page 824 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.
Book Synopsis Effects of Late Planting Dates, Maturity Groups and Management Systems on Growth, Development and Yield of Soybean in South Carolina by : Mengxuan Hu
Download or read book Effects of Late Planting Dates, Maturity Groups and Management Systems on Growth, Development and Yield of Soybean in South Carolina written by Mengxuan Hu and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Planting date plays a significant role in determining soybean growth, development and seed yield. The objectives of this experiment were to evaluate the effects of late planting date, management system, and maturity group on the growth, development and seed yield of maturity group VII and VIII soybean under dry land conditions in the Southeastern coastal plain of the United States. Plant growth and development, seed yield, yield components, and seed oil and protein concentrations were evaluated throughout the season. These experiments were conducted in South Carolina at the Edisto Research and Education Center near Blackville and the Pee Dee Research and Education Center near Florence. Soybean was planted at four weekly intervals starting on 15-June in both 2011 and 2012. Pioneer 97M50 (a MG VII determinate variety) and Prichard Roundup Ready (a MG VIII determinate variety) were selected based on their adaptation to the Southeast. The two management systems were: a strip-till (ST) system using a John Deere MaxEmerge Vaccum planter + Unverferth 300 strip till with 96-cm row spacing and a drilled no-till (NT) planting system with 19-cm row spacing. Plant growth was evaluated based on leaf area index (LAI), Normalized Difference Vegetation Index (NDVI), and plant height (HT). Plant development was calculated based on the duration (days) of growth stages. Growth stages were recorded weekly from 10 randomly selected plants in each plot. The beginning of each stage was determined when at least 50% of plants were at that stage. Overall, planting after 22 June appeared to reduce seed yield. The ST system increased the seed yield compared to the drilled NT system. Yields were greater for the MG VIII variety than the MG VII variety. LAI, NDVI, and HT at R2 and R4 were generally reduced with delayed planting dates. Later planting shortened the duration of both vegetative and reproductive growth stages for both MG VII and VIII soybeans. Shortened duration of vegetative growth and seed filling period might have contributed most to the lower yields observed in delayed planting dates. Planting date did not affect either protein or oil concentration. Protein concentration in the seed was found to be significantly higher and oil concentration lower in soybean grown in the ST system than in the drilled NT system. Positive correlations were found between: seed yield and LAI, NDVI, and HT at R2 and R4; seed yield and duration of vegetative and seed filling growth period; and seed yield and dry weight of each plant part (branches, stems, petioles, leaves, and pods).
Book Synopsis Effect of Relative Maturity on Soybean Yield and Cover Crop Biomass Evaluation Methods by : Wayde Looker
Download or read book Effect of Relative Maturity on Soybean Yield and Cover Crop Biomass Evaluation Methods written by Wayde Looker and published by . This book was released on 2019 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ohio contains many acres of continuous soybean [Glycine max (L.) Merr.] production that may benefit from the incorporation of a fall-planted cover crop. Timely planting is extremely important when establishing a fall-planted cover crop. To ensure that cover crops are planted in a timely manner, soybean varieties with an earlier relative maturity may be planted so that soybeans are harvested earlier in the fall allowing for more timely cover crop planting. However, soybean relative maturity also impacts soybean grain yield, with earlier maturing varieties yielding less compared to later maturing varieties. The objectives of this study were to evaluate the relationship between relative maturity and grain yield, plant height, seed protein content, seed oil content and number of days to anthesis and physiological maturity. This study was completed during 2017 and 2018 at the Northwest Agricultural Research Station (NWARS) in Custar, Ohio, and the Western Agricultural Research Station (WARS) in South Charleston, Ohio. Grain yield, plant height, maturity date, and grain protein and oil concentration were measured. All measurements were taken just prior to or at harvest when grain was near 13% moisture content. Soybean yields plateaued at a 2.9 maturity at NWARS and 3.2 maturity at WARS. It was also determined that the earliest maturities reached the R8 growth stage approximately one month before the latest maturities (29.9 days at NWARS and 36.5 days at WARS) while the difference was about 10 days for R1 (8.7 days at NWARS and 12 days at WARS). Plant height held a linear relationship to relative maturity and increased as relative maturity increased. Seed protein content and seed oil content also held a linear relationship to relative maturity. Biomass accumulation is a useful way to measure the amount of vegetative growth produced by a cereal rye and oat cover crop. However, biomass measurements can be slow and labor intensive and a faster method may be available to estimate the accumulated biomass. The objective of this study was to evaluate the relationship between normalized difference vegetation index (NDVI), fractional green canopy cover (FGCC), and biomass of a cereal rye and oat cover crop. This study was conducted in 2017 and 2018 at WARS and NWARS using a split plot randomized complete block design with four replications of treatments. The main plot factor was four cover crop planting dates (late September to late October) and the sub-plot factor was two cover crop termination dates (late April and early May). Normalized difference vegetation index measurements, FGCC measurements, and biomass samples were collected in the fall and spring at each location. The results showed a quadratic relationship between both NDVI and FGCC to the biomass of the cereal rye and oat cover crop. However, the adjusted R2 value and the RMSE of the FGCC was greater, suggesting that the FGCC was a better indicator of biomass compared to NDVI.
Book Synopsis The Critical Seed-filling Period Duration is Dependent on Soybean Planting Date and Cultivar Maturity Selection: Implications for Crop Management by : Jacob P. Vossenkemper
Download or read book The Critical Seed-filling Period Duration is Dependent on Soybean Planting Date and Cultivar Maturity Selection: Implications for Crop Management written by Jacob P. Vossenkemper and published by . This book was released on 2017 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evaluation of Soybean (Glycine Max) Planting Dates and Plant Densities in Northern Growing Regions of the Northern Great Plains by : Cassandra Tkachuk
Download or read book Evaluation of Soybean (Glycine Max) Planting Dates and Plant Densities in Northern Growing Regions of the Northern Great Plains written by Cassandra Tkachuk and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soybean (Glycine max L. Merr.) planting date and plant density are agronomic decisions made simultaneously at the beginning of the growing season that can be used to maximize yield and economic return. Research on these basic soybean agronomic decisions must be conducted to support the expansion of soybean production in northern growing regions of the Northern Great Plains (NGP). The objectives of this study were to evaluate the effects of planting dates based on soil temperature on soybean emergence, maturity, and yield for short and long season varieties in Manitoba, and to determine optimum soybean plant density for early to very late planting dates in northern growing regions of the NGP. In the first experiment, calendar date had a greater influence than soil temperature at planting on soybean yield. Soybean yield declined with later planting rather than increasing soil temperature at planting. The earliest planting dates resulted in the greatest soybean yields. In the second experiment, soybean yield-density relationships were responsive to planting date. Yield-density relationships formed early/mid (May 4 to 26) and late/very late (June 2 to 23) planting date groups for combined site years. Early/mid planting dates resulted in greater maximum yields. According to the yield-density model, true yield maximization did not occur for any planting dates and site years within the range of plant densities tested in this field study. Soybean economic optimum seed densities (EOSDs) were much lower than predicted plant densities that maximized yield. Soybean EOSDs were identified as 492,000 and 314,000 seeds ha-1 by marginal cost analysis for early/mid and late/very late planting, respectfully. These values were sensitive to changes in soybean grain price and seed cost. Thus, growers need to adjust EOSDs for changes in price and cost. A combined analysis of soybean yields from both experiments using similar target plant densities determined that a significant negative linear relationship existed between soybean yield and planting date. The greatest soybean yields resulted from early planting and declined by 16 kg ha-1 for each one-day delay in planting from Apr 27 to June 16. However, yield responses varied among site years. The overall recommendation from this study would be to plant soybeans during the month of May at a profit-maximizing seed density, accounting for fluctuating grain price and seed cost.
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:
Download or read book IGrow Soybeans written by and published by . This book was released on 2013-07-03 with total page 600 pages. Available in PDF, EPUB and Kindle. Book excerpt: Agronomic recommendations for soybean production in the Midwest
Download or read book Bulletin written by and published by . This book was released on 1985 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ORYZA2000 written by and published by IRRI. This book was released on 2001 with total page 245 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Performance of Agronomic Crop Varieties in Alaska, 1978-2002 by : Robert M. VanVeldhuizen
Download or read book Performance of Agronomic Crop Varieties in Alaska, 1978-2002 written by Robert M. VanVeldhuizen and published by . This book was released on 2004 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: This publication is not a crop production manual. Its main purpose is to provide basic information on small grain and oilseed variety testing, along with information on successful cultural practices identified by research conducted from 1978 through 2002. Each crop is presented in separate sections with general cultural information on fertilization, tillage, pest control, harvest, and storage, followed by tables listing yields and maturity for all known varieties tested at each location within the state. In each section there is also a list, description, and seed source for all recommended varieties.
Book Synopsis Understanding Options for Agricultural Production by : G.Y. Tsuji
Download or read book Understanding Options for Agricultural Production written by G.Y. Tsuji and published by Springer Science & Business Media. This book was released on 2013-03-14 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first premise of this book is that farmers need access to options for improving their situation. In agricultural terms, these options might be manage ment alternatives or different crops to grow, that can stabilize or increase household income, that reduce soil degradation and dependence on off-farm inputs, or that exploit local market opportunities. Farmers need a facilitating environment, in which affordable credit is available if needed, in which policies are conducive to judicious management of natural resources, and in which costs and prices of production are stable. Another key ingredient of this facilitating environment is information: an understanding of which options are viable, how these operate at the farm level, and what their impact may be on the things that farmers perceive as being important. The second premise is that systems analysis and simulation have an impor tant role to play in fostering this understanding of options, traditional field experimentation being time-consuming and costly. This book summarizes the activities of the International Benchmark Sites Network for Agrotechnology Transfer (IBSNAT) project, an international initiative funded by the United States Agency for International Development (USAID). IBSNAT was an attempt to demonstrate the effectiveness of understanding options through systems analysis and simulation for the ultimate benefit of farm households in the tropics and subtropics. The idea for the book was first suggested at one of the last IBSNAT group meetings held at the University of Hawaii in 1993.
Download or read book Agronomy Abstracts written by and published by . This book was released on 1995 with total page 1348 pages. Available in PDF, EPUB and Kindle. Book excerpt: Includes abstracts of the annual meetings of the American Society of Agronomy; Soil Science Society of America; Crop Science Society of America ( - of its Agronomic Education Division).
