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Author : Gary E. Pepper
Publisher :
ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (31 download)
Download or read book Soybean Replanting Considerations for Maximizing Returns written by Gary E. Pepper and published by . This book was released on 1987 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Gary E. Pepper
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (31 download)
Download or read book Soybean Replanting Considerations for Maximizing Returns written by Gary E. Pepper and published by . This book was released on 1987 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Weston Joseph Weeks
Publisher :
ISBN 13 : 9781339312859
Total Pages : 182 pages
Book Rating : 4.3/5 (128 download)
Download or read book Soybean Planting and Risk-return Tradeoffs in the Mid-Southern United States written by Weston Joseph Weeks and published by . This book was released on 2015 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis is comprised of two studies on the effects of soybean ( Glycine max (L.) Merr.) planting date (PD) and maturity group (MG) selection on producer expected returns. Having to replant soybean after early-season planting because of poor stand establishment is costly for producers. Replanting costs have increased in the last ten years as seed and other input costs for soybean have increased. Using five years of field trial results from two locations in Arkansas, the yield response to early and late season plant population density has been estimated to determine yield and future revenue potential for the purpose of determining whether or not replanting makes economic sense for a producer. Economically derived soybean replanting thresholds, defined as the number of plants at two or four weeks after planting for the initial planting below which replanting makes economic sense, were established for both locations. Sensitivity analyses on soybean price, seed cost, and producer replanting costs were performed to determine their relative importance on replanting thresholds. Deciding to replant earlier than four weeks after planting was suggested as the yield potential of earlier replanted soybean is higher. The replanting threshold counts, however, also need to be adjusted. In the second study, producer return variance or production risk associated with growing soybean of different maturity and at varying times during the planting season was analyzed. An efficient frontier where returns are maximized at varying levels of risk was calculated for a set of nine locations across six states using three years of data from field experiments. Because a producer can freely select what MG of soybean to plant and when to plant, risk return tradeoffs were studied for planting portfolios featuring soybeans from MG III to VI and PD ranging from as early as the beginning of April in some locations to mid-July. The median level of risk between minimal portfolio risk and the risk level of the return-maximizing MG and PD combination was solved for and expected return and risk was compared between the median-risk portfolio and the profit-maximizing portfolio. This comparison provided insight about the relative cost of risk reduction for the nine different locations. Water consumption, price seasonality, and seed oil and protein concentration were considered in the development of return estimates. Because producer planting risk preferences vary, a spreadsheet tool that can solve for efficient MG and PD planting portfolios is envisioned that will allow the parameters of the optimization to be customizable for the producer.
Author : Cassandra Tkachuk
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (135 download)
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.
Author : Thomas Bernard Siler
Publisher :
ISBN 13 :
Total Pages : 98 pages
Book Rating : 4.5/5 (57 download)
Download or read book Identifying Optimal Management Decisions Based on Soybean Planting Date written by Thomas Bernard Siler and published by . This book was released on 2020 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: The practice of early-season soybean [Glycine Max (L.) Merr.] planting has been increasing in the northern US. However, a wide range of planting dates (PDs) are still implemented due to poor soil conditions, inclement weather, equipment restrictions, crop rotation, and operation size. Information regarding how soybean management decisions should be adjusted based on PD is lacking in Michigan and other northern US regions. This research was conducted to identify how optimal soybean seeding rate (SR), seed treatment (ST) use, and variety maturity group (MG) selection is determined by PD. Field experiments were conducted at two locations in Michigan during the 2018 and 2019 growing season. In the first experiment, soybean was planted at five SRs, between 123,553 and 518,921 seeds ha−1, with or without a ST, on four PDs (late-April to late-June). In the second experiment, six soybean MGs, between 1.0 and 3.5, were planted on four PDs (late-April to late-June). The use of a ST did not improve yield or net returns in this study. When soybean was planted before mid-May, seed yield and net returns were maximized by planting a late MG (≥ 3.0) at a SR between 187,660 and 201,451 seeds ha−1. The optimal SR between the mid-May and early-June PDs was between 220,301 and 265,305 seeds ha−1 and MG selection had less influence on seed yield compared to earlier PDs. When planting was delayed to late-June, using an early MG (≤ 2.5) resulted in the optimal yield and the optimal SR was > 330,000. Results from this study show that soybean yield, quality, and net returns can be improved by adjusting management practices based on PD.
Author : Adam Paul Gaspar
Publisher :
ISBN 13 :
Total Pages : 146 pages
Book Rating : 4.:/5 (964 download)
Download or read book Planting Date and Maturity Group Selection to Maximize Soybean Yield and Subsequent Dry Matter and Nutrient Uptake, Partitioning, and Removal written by Adam Paul Gaspar and published by . This book was released on 2016 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: As soybeans have become a major U.S. crop and key component in different cropping systems over the past half century, advancements in breeding and production practices have shown gains in yield and economic profitability for producers. Important production considerations included soil fertility, proper maturity group (MG) selection, and planting date. In southern Wisconsin, maximum yields are reduced by 21.2 kg ha-1 day-1 after May 10th (Gaspar and Conley, 2015). Growers have realized this effect and gradually shifted their soybean planting earlier. However, some believe that while producers are planting earlier and experiencing a longer growing season, they have not adequately adjusted their soybean MG’s. Coincident with earlier planting dates is the increased risk of sub-optimal stands and the need for replanting some years. Proper replanting methods (fill-in) and optimal final plant stands (>247,000 plants ha-1) have been determined by Gaspar and Conley (2015) but again, the proper MG to use in replant or essentially late planting scenarios to maximize yield and avoid fall frost damage is unclear. This document provides data demonstrating the importance of MG selection and the negative impact of delayed planting in the Northern Corn Belt. Economically and environmentally sustainable soil fertility programs are a necessity for modern soybean production systems. Unfortunately, soybean nutrient uptake and partitioning models are primarily built from work conducted in the early 1960’s with obsolete soybean genetics and production practices (Hanway and Weber, 1971a; Hanway and Weber, 1971b). Since the 1960’s, yields have nearly doubled to 2906 kg ha-1 in 2013 (USDA-NASS, 2014b) and soybean physiology has been altered with approximately one additional week of reproductive growth (Rowntree et al., 2014) and greater harvest index’s (HI) (Kumudini et al., 2001) for currently cultivated varieties. More precise and accurate estimates have the potential to increase grower profitability by applying only what the crop needs while possibly decreasing the environmental impact in terms of nutrient loads in the Mississippi watershed, which accounts for more than 90% of all US soybean acres (USDA-ERS, 2014). This document highlights large changes in nutrient uptake, partitioning, and removal of current soybean genetics and production practices.
Author : Gary E. Pepper
Publisher :
ISBN 13 :
Total Pages : 12 pages
Book Rating : 4.:/5 (31 download)
Download or read book Managing Deficient Soybean Stands written by Gary E. Pepper and published by . This book was released on 1991 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Fabiano Colet
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (135 download)
Download or read book Soybean Planting Date and Seeding Rate Effects on Stand Loss, Grain Yield, Agronomic Optimum Seeding Rate, Partial Net Economic Return, and Seed Quality written by Fabiano Colet and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Planting soybean early (late April through early May) is recommended to achieve high grain yields. However, unfavorable conditions can limit farmers’ ability to plant during the recommended period, and thus, an increase in the seeding rate may be necessary. Also, weather conditions can affect seed quality, and choosing an adequate planting date can mitigate the impacts of unfavorable weather on the seed. Thus, the objectives of this study were to (1) measure the effect of planting date and seeding rate on stand loss over the growing season, (2) measure the effect of soybean seeding rate and planting date on grain yield, (3) identify the agronomic optimum soybean seeding rate (AOSR) and the partial economic return for the lowest and highest soybean price, and (4) measure the effect of soybean planting date and seeding rate on harvested seed mass, seed germination, and seedling vigor. For these objectives, a field study was conducted for two growing seasons at two locations in Ohio: Western (WARS) and Northwest (NWARS) Agricultural Research Stations. The experimental design used was a split-plot randomized complete block with four replications. The main plot factor was four planting dates ranging from 25 April through 10 July, and the split-plot factor was five seeding rates ranging from 123,500 to 618,000 seeds ha-1. At WARS-2020, planting soybeans in April through early June had a similar grain yield (5,090-5,285 kg ha-1), while there was a reduction in grain yield when soybean was planted in late June (4,216 kg ha-1). In contrast, in WARS-2021, planting dates did not statically influence grain yield. At NWARS-2020, a small amount of rainfall during the pod-setting growth stages (R3-R4 stages) impacted and reduced the grain yield for soybeans planted in April (3,113 kg ha-1) and May (2,909 kg ha-1) when compared to soybean planted on early-June (3,595 kg ha-1). The AOSR changed among site-years. For soybean grown under normal weather conditions, the AOSR needed to be increased as planting was delayed to achieve the highest grain yield. The planting date factor also impacted soybean seed quality. The germination rate in all site-years was above 94%; however, soybean planted in early June had the lowest seedling vigor results (64 to 81%) compared to other planting dates (80 to 89%) in both locations. These findings can help growers improve grain yield, increase economic return, and produce high-quality seeds.
Author :
Publisher :
ISBN 13 :
Total Pages : 1238 pages
Book Rating : 4.E/5 ( download)
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:
Author : University of Illinois at Urbana-Champaign. Office of Agricultural Communications and Education
Publisher :
ISBN 13 :
Total Pages : 72 pages
Book Rating : 4.:/5 (31 download)
Download or read book Resources Catalog written by University of Illinois at Urbana-Champaign. Office of Agricultural Communications and Education and published by . This book was released on 1995 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Hassan Oloumi-Sadegi
Publisher :
ISBN 13 :
Total Pages : 562 pages
Book Rating : 4.:/5 (31 download)
Download or read book Analysis of Soybean Production/protection Systems and Research Needs in the North Central Region written by Hassan Oloumi-Sadegi and published by . This book was released on 1987 with total page 562 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 148 pages
Book Rating : 4.:/5 (31 download)
Download or read book Illinois Agronomy Handbook, 1991-1992 written by and published by . This book was released on 1990 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : D. R. Erickson
Publisher : Elsevier
ISBN 13 : 0128045515
Total Pages : 594 pages
Book Rating : 4.1/5 (28 download)
Download or read book Practical Handbook of Soybean Processing and Utilization written by D. R. Erickson and published by Elsevier. This book was released on 2015-08-25 with total page 594 pages. Available in PDF, EPUB and Kindle. Book excerpt: Practical Handbook of Soybean Processing and Utilization is a single source of information on all aspects of soybean processing and utilization written by experts from around the globe. Written in an easy-to-read format, this title covers a wide range of topics including the physical and chemical characteristics of soybeans and soybean products; harvest and storage considerations; byproduct utilization; soy foods; and nutritional aspects of soybean oil and protein. Compares soybeans to other vegetable oils as a source of edible oil products Presents a wide range of topics including chemistry, production, food use, byproduct use, and nutritional aspects Offers practical information ideal for soybean oil plant managers
Author :
Publisher :
ISBN 13 :
Total Pages : 128 pages
Book Rating : 4.:/5 (31 download)
Download or read book Illinois Agronomy Handbook, 1989-1990 written by and published by . This book was released on 1989 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 192 pages
Book Rating : 4.:/5 (31 download)
Download or read book Pest Management & Crop Development Bulletin written by and published by . This book was released on 2009 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Larry P. Pedigo
Publisher : CRC Press
ISBN 13 : 1000141217
Total Pages : 732 pages
Book Rating : 4.0/5 (1 download)
Download or read book Handbook of Sampling Methods for Arthropods in Agriculture written by Larry P. Pedigo and published by CRC Press. This book was released on 2020-08-26 with total page 732 pages. Available in PDF, EPUB and Kindle. Book excerpt: Handbook of Sampling Methods for Arthropods in Agriculture offers a comprehensive look at the principles and practicality of developing accurate sampling programs for arthropod pests and their arthropod enemies. The book examines developments in sampling populations and reviews sampling plans that produce accurate and affordable population estimates. The text stresses practicality, as well as the theoretical background of sampling. This book will be an indispensable reference for researchers, students, and practitioners in entomology and agriculture.
Author :
Publisher :
ISBN 13 :
Total Pages : 822 pages
Book Rating : 4.E/5 ( download)
Download or read book Agrindex written by and published by . This book was released on 1993 with total page 822 pages. Available in PDF, EPUB and Kindle. Book excerpt:
