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Field Investigations Of Foliar Fertilizer Strategies Of Soybean Mn Deficiency In Michigan And Phosphorus And Potassium Fertilizer Application Strategies In Corn Soybean Rotations In The United States
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Book Synopsis Field Investigations of Foliar Fertilizer Strategies of Soybean Mn Deficiency in Michigan and Phosphorus and Potassium Fertilizer Application Strategies in Corn-soybean Rotations in the United States by : Timothy John Boring
Download or read book Field Investigations of Foliar Fertilizer Strategies of Soybean Mn Deficiency in Michigan and Phosphorus and Potassium Fertilizer Application Strategies in Corn-soybean Rotations in the United States written by Timothy John Boring and published by . This book was released on 2013 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Fertilizer Application on Crop Yield by : Jagadish Timsina
Download or read book Fertilizer Application on Crop Yield written by Jagadish Timsina and published by MDPI. This book was released on 2019-04-02 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fertilizer application can increase crop yields and improve global food security, and thus has the potential to eliminate hunger and poverty. However, excessive amounts of fertilizer application can contribute to groundwater pollution, greenhouse gas emissions, eutrophication, deposition and disruptions to natural ecosystems, and soil acidification over time. Small farmers in many countries think inorganic fertilizers are expensive and degrade soils, and thus policymakers want to promote organic instead of inorganic fertilizers. To develop practical fertilizer recommendations for farmers, yield responses to applied fertilizers from inorganic and organic sources, indigenous nutrient supply from soil, and nutrient use efficiency require consideration. There is a lack of sufficient scientific understanding regarding the need and benefit of integrated nutrient management (i.e., judicious use of inorganic and organic sources of nutrients) to meet the nutrient demand of high-yielding crops, increase yields and profits, and reduce soil and environmental degradation. Inadequate knowledge has constrained efforts to develop precision nutrient management recommendations that aim to rationalize input costs, increase yields and profits, and reduce environmental externalities. This Special Issue of the journal provided some evidence of the usefulness of integrated nutrient management to sustain soil resources and supply nutrients to crops grown with major cereal and legume crops in some developing countries.
Book Synopsis Evaluation of Corn and Soybean Response to Phosphorus and Potassium Fertilization by : Ingrid Arns
Download or read book Evaluation of Corn and Soybean Response to Phosphorus and Potassium Fertilization written by Ingrid Arns and published by . This book was released on 2013 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Corn (Zea mays) response to fertilization and placement methods has been studied extensively; however studies on soybean [Glycine max (L.) Merr.] response to placement have been limited. Three studies were completed to evaluate different aspects of crop response. The objective of the first study was to evaluate the effect of starter and broadcast fertilizer application on corn and soybean, in a typical corn-soybean rotation in Kansas. Treatments were unfertilized control, starter (N, P and K), broadcast P and K using mono ammonium phosphate (MAP) and potassium chloride (KCl) and the combination of starter and broadcast. Corn and soybean yield generally was not affected by starter and broadcast treatments. Thus fertilization may be recommended only under specific conditions. The objectives of the second study were (i) to evaluate the effect of residual and direct fertilization on soybeans after corn under a corn-soybean rotation system, and (ii) study the effect of fertilizer P and K application on soil test P (STP) and soil test K (STK) changes over time. Direct fertilization increased soybean yield while residual fertilizer did not. Therefore maintenance rates may be effective to improve soybean yield and likely maintain STP and STK levels. Application of P and K fertilizer generated significant increases in STP and STK after one year of application. The rate of P and K fertilizer required to increase 1 mg kg−1 yr−1 was between 2.8 - 5.1 kg ha−1 for P and between 1.0- 2.5 kg ha−1 for K, respectively. The objective of the third study evaluate both corn and soybean response to direct P fertilization including starter and broadcast. The treatments were a control, two starter fertilizers (with N-P and N only), five P rates (9.8, 19.6, 29.3, 39.1, 48.9 kg P ha−1) and one treatment with starter fertilizer in addition to the broadcast fertilizer application. Corn grain yield was not significantly affected by any broadcast or starter treatments. Broadcast application rates significantly increased soybean yield on low STP levels. Results of this study show that large corn or soybean yield response to starter and broadcast P application are likely with low STP levels.
Book Synopsis Evaluation of Foliar Fertilizer Or Cytokinin Mixtures in Combination with Common Postemergence Soybean Herbicides by : Huntington Tyler Hydrick
Download or read book Evaluation of Foliar Fertilizer Or Cytokinin Mixtures in Combination with Common Postemergence Soybean Herbicides written by Huntington Tyler Hydrick and published by . This book was released on 2017 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt: In an effort to reduce application costs and to integrate plant health management strategies in soybean, growers may combine POST herbicides with foliar fertilizers or cytokinin mixtures. Field experiments were conducted at the Delta Research and Extension Center in Stoneville, MS in 2015 and 2016 to evaluate soybean [Glycine max (L.) Merr.] injury, weed control, and agronomic performance when combining blended or single-nutrient foliar fertilizers with POST herbicide applications. Field experiments were also conducted at the Delta Research and Extension Center in Stoneville, MS in 2015 and 2016 to evaluate the influence of cytokinin mixtures on soybean injury and weed control when combined with common POST soybean herbicides.
Book Synopsis Improving Potassium Recommendations for Agricultural Crops by : T. Scott Murrell
Download or read book Improving Potassium Recommendations for Agricultural Crops written by T. Scott Murrell and published by Springer. This book was released on 2022 with total page 476 pages. Available in PDF, EPUB and Kindle. Book excerpt: This open access book highlights concepts discussed at two international conferences that brought together world-renowned scientists to advance the science of potassium (K) recommendations for crops. There was general agreement that the potassium recommendations currently in general use are oversimplified, outdated, and jeopardize soil, plant, and human health. Accordingly, this book puts forward a significantly expanded K cycle that more accurately depicts K inputs, losses and transformations in soils. This new cycle serves as both the conceptual basis for the scientific discussions in this book and a framework upon which to build future improvements. Previously used approaches are critically reviewed and assessed, not only for their relevance to future enhancements, but also for their use as metrics of sustainability. An initial effort is made to link K nutrition in crops and K nutrition in humans. The book offers an invaluable asset for graduate students, educators, industry scientists, data scientists, and advanced agronomists.
Book Synopsis Impacts and Correction of Potassium Deficiency in No-till and Strip-till Soybean and Corn Production by : Shannon M. Blocker
Download or read book Impacts and Correction of Potassium Deficiency in No-till and Strip-till Soybean and Corn Production written by Shannon M. Blocker and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This study was initiated to determine if potassium (K) deficiencies seen in soybeans (Glycine max (L.) Merr.) under no-till and strip-till production systems are impacting soybean yields, and if so, what fertilizer application practices including: rate of K application; broadcast or deep band methods of application; and the use of starter fertilizer at planting; could be used to correct the problem. The residual impacts of K fertilization and placement were also evaluated on corn (Zea mays L.) grown in rotation with soybeans. This research was conducted on-farm in cooperation with local producers. Soybeans sites in 2007 were near Harris, Ottawa and Westphalia, Kansas with corn planted in 2008 at the sites near Ottawa and Westphalia. Soybean sites in 2008 were located near Ottawa and Welda, Kansas. Selected sites were generally near or below the current soil test K critical level of 130 mg per kg extractable K, based on sampling histories provided by the cooperators. Sampling in the spring of 2007 confirmed these soil test (ST) K levels. Soybean leaf tissue potassium levels in 2007 were less than the critical level of 17 mg per kg in the unfertilized control plots, and were significantly greater when potassium fertilizer was deep banded or a high-rate of K fertilizer was broadcast. No significant difference in yield of soybeans due to K fertilization was seen, likely due to significant water stress during the grain fill period, which severely limited soybean yield in 2007. Soil test K levels at all the research sites increased dramatically between 2007 and 2008, even where no K was applied. Different weather conditions experienced these two years may have contributed to this occurrence. No residual impacts of K fertilization in 2007 on soybeans were seen in soil tests, corn leaf tissue K levels or corn yield in 2008. Soybean sites in 2008 also showed a dramatic increase in K ST levels in 2008 as compared to farmer records. No effects of K fertilization on soybean growth or yield were seen in 2008. The 2008 Ottawa soybean site had very low P soil tests. A significant response to P fertilization contained in the starter treatments was observed. This suggests that the dominant farmer practice of applying P and K fertilizer to corn, and not applying fertilizer directly to soybeans, even at low soil test levels, may not be supplying adequate P to soybeans, and is likely costing farmers yields and profits.
Book Synopsis Site-specific Versus Whole-field Fertility and Lime Management in Michigan Soybeans and Corn by :
Download or read book Site-specific Versus Whole-field Fertility and Lime Management in Michigan Soybeans and Corn written by and published by . This book was released on 2002 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: Examines the yield and cost effects of variable rate application of fertilizer nutrients (phosphorus, potassium, and lime) on Michigan soybean and corn farm fields in 1998-2001.
Book Synopsis Use of Different Sources and Rates of Foliar Potassium with Glyphosate to Overcome Environmental- and Management-induced K Deficiency in Soybeans by : Sutham Phurahong
Download or read book Use of Different Sources and Rates of Foliar Potassium with Glyphosate to Overcome Environmental- and Management-induced K Deficiency in Soybeans written by Sutham Phurahong and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The incidence of potassium (K) deficiency in soybeans [Glycine max (L.) Merr] has increased over the last few years in Missouri and other Midwestern states. Postemergence application of foliar K fertilizer would have the potential advantage of increased flexibility for growers to respond to K deficiency that may occur during the growing season. In addition, increasing use of postemergence applications of glyphosate for weed control in glyphosate-tolerant soybeans provides the opportunity for applying foliar K fertilizer with glyphosate. The objectives of this research were to determine soybean response to several rates of different foliar K sources mixed with and without glyphosate under different types of soil, soil test K, soil water content, soil compaction and climatic conditions and to evaluate use of the chlorophyll meter for quickly measuring plant K deficiency in the field. Minimal leaf injury caused by applications of foliar K fertilizer sources mixed with glyphosate indicated the possibility of tank mixing. However, soybean grain yield and plant growth were not significantly improved. The level of nutrients in soybean leaf tissue including potassium, phosphorus, magnesium, calcium, boron, zinc, sulfur, iron, and copper were little affected. No correlation between SPAD chlorophyll meter readings and total K content in the plant was found. Therefore, further research is needed to better assess other soil characteristics and environmental conditions affecting soybean response to foliar K fertilization.
Book Synopsis Strategies to Define and Improve Soil Health in North Central US Soybean by : Lindsay Chamberlain Malone (Ph.D.)
Download or read book Strategies to Define and Improve Soil Health in North Central US Soybean written by Lindsay Chamberlain Malone (Ph.D.) and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil is the foundation for human civilization - it is the literal foundation of our homes, the source of raw materials, a filter and storage system for the water we drink, a medium for plant growth, and a habitat for many organisms. Keeping the soils of our planet healthy to carry out these functions is incredibly important. In agriculture, there is a building movement to study and improve soil health across the landscape, of which this research is a small part. This body of research addresses several areas within soil health; how we define and test for healthy soil, practices that may help build healthier soil, and some of the practical challenges of managing for soil health. We specifically focused on annual row crop systems in the North Central US region, and in particular soybean production. First, we focused on a few practical soil health tests that could be adopted by farmers - linking these measurements to both historical management and soybean yield. This study was a community-science project that relied on the help of Wisconsin soybean farmers to sample their fields and relay management information. The results of this study will help direct future research and identified crop rotation as a key area for soil health improvement. Next, we examined some common production practices related to building soil health and their effects on crop yield using long-term crop rotation studies. We looked at the effects of tillage, crop rotation, and foliar fungicide use on corn and soybean yield, and the legacy effect of the latter two of these treatments on soil fungal populations. Microbial communities carry out critical functions in soil, so it is important to understand how human activity shapes their populations. Finally, another long-term rotation study was used to look at the feasibility and yield effects of establishing cover crops, a key soil health practice, in annual row crop systems in Wisconsin. Overall, this work identifies avenues for both measuring and improving soil health in North Central US soybean.
Download or read book Bibliography of Agriculture written by and published by . This book was released on 1998 with total page 644 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Uniform and Variable-rate Fertilizer and Manure Phosphorus for the Corn-soybean Rotation by : David John Wittry
Download or read book Uniform and Variable-rate Fertilizer and Manure Phosphorus for the Corn-soybean Rotation written by David John Wittry and published by . This book was released on 2002 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: Precision agriculture has evolved from a concept into an accepted management practice. The challenge now is how to best utilize these technologies for the benefit of agriculture. Nutrient management could be improved and spatial variability reduced by variable-rate (VR) application. The objectives of this dissertation were to assess the value of VR P fertilization and P-based liquid swine manure application for corn (Zea mays L.) and soybean [Glycine max (L.) Merr.] production compared with the traditional uniform-rate (UR) application. On-farm research methods based on replicated, long narrow strips were adapted to precision technologies. These technologies included grain yield monitors, differential global positioning systems, and geographical information systems. Treatments consisted of a non-fertilized control, a UR method based on average soil-test P (STP) for the entire field and a VR method based on STP from 0.2 to 1.7 ha grid cells. Grain yield and temporal changes in STP were used to assess treatment differences in both studies. In addition, plant dry weight, P concentration, and P uptake (V5 growth stage) were used in the fertilizer study. Phosphorus fertilization and manure often increased whole-field crop grain yield in fields which average STP values were below the Optimum interpretation class for corn and soybean production. Analyses of yield for field areas with contrasting STP values often showed significant responses to fertilizer or manure P in field areas testing Optimum or less, but rarely in high-testing areas. Phosphorus fertilization increased early plant growth and P uptake more frequently than grain yield. Although the method of P application did not influence whole-field or within-field plant responses, VR reduced soil P variability compared with UR by increasing STP in low-testing areas and decreasing or not affecting STP of high-testing areas. This research showed precision farming technologies are useful tools for improving nutrient management. Fertilization or manure application programs that vary the nutrient application rate may not result in increased yield compared with UR application methods. However, use of VR technology will result in better nutrient management and perhaps better water quality because of more efficient distribution of fertilizer or manure.
Book Synopsis Changing Soil Fertility Strategies to Address New Challenges in Soybean N Fixation and Sugarbeet Management by : Storm Cameron Soat
Download or read book Changing Soil Fertility Strategies to Address New Challenges in Soybean N Fixation and Sugarbeet Management written by Storm Cameron Soat and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Michigan spring weather variabilities and earlier planting dates may provide opportunities for starter fertilizer to influence early-season soybean (Glycine max L. Merr.) dry matter production while simultaneously decreasing the time interval for nutrient accumulation. However, potential fertilizer impacts on inhibition of biological N fixation (BNF) are not well understood. Two multi-year field trials investigated the effects of planting date, starter fertilizer, and various nitrogen (N) application timings on BNF, grain yield, and expected net return on irrigated and non-irrigated environments. April planting as compared to May increased grain yield in only one of four site years. Starter fertilizers containing
Download or read book Agrindex written by and published by . This book was released on 1995 with total page 1006 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Comprehensive Dissertation Index by :
Download or read book Comprehensive Dissertation Index written by and published by . This book was released on 1973 with total page 798 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Managing Cover Crops Profitably (3rd Ed. ) by : Andy Clark
Download or read book Managing Cover Crops Profitably (3rd Ed. ) written by Andy Clark and published by DIANE Publishing. This book was released on 2008-07 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cover crops slow erosion, improve soil, smother weeds, enhance nutrient and moisture availability, help control many pests and bring a host of other benefits to your farm. At the same time, they can reduce costs, increase profits and even create new sources of income. You¿ll reap dividends on your cover crop investments for years, since their benefits accumulate over the long term. This book will help you find which ones are right for you. Captures farmer and other research results from the past ten years. The authors verified the info. from the 2nd ed., added new results and updated farmer profiles and research data, and added 2 chap. Includes maps and charts, detailed narratives about individual cover crop species, and chap. about aspects of cover cropping.
Book Synopsis Cover Crop and Phosphorus Fertilizer Management Implications for Water Quality in a No-till Corn-soybean Rotation by : Robert Elliott Carver
Download or read book Cover Crop and Phosphorus Fertilizer Management Implications for Water Quality in a No-till Corn-soybean Rotation written by Robert Elliott Carver and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Phosphorus (P) is an essential nutrient required for crop growth with finite global reserves. Although naturally occurring concentrations of total P in soils may greatly exceed crop demand, quantities of readily plant-available P in soil solution are typically very low. As such, agricultural producers regularly apply P-containing fertilizers to help optimize crop yields. While applications of P fertilizers may improve crop performance, losses of P from non-point agricultural sources are a known contributor to the degradation of surface water quality with excessive P inputs leading to eutrophication, harmful algal blooms, and increased water treatment costs. Acknowledging the importance of P in production agriculture and the role it plays in water quality it is imperative to develop agricultural management systems designed to promote crop yields while protecting water quality. This study explores the interplay between winter grown cover crops and P fertilizer management practice in relation to annual concentrations and loads of total suspended solids, total P, and dissolved reactive P in surface runoff generated by natural precipitation events for a no-till corn (Zea mays)-soybean (Glycine max) rotation located in the Central Great Plains. To explain the mechanisms behind the potential implications of altering cover crop and/or P fertilizer management practice in relation to water quality, this study examined temporal/seasonal variability in surface runoff water quality, changes in soil fertility status, and the impact of winter cereal cover crop species on potential P release and nutrient cycling. The majority of this research was conducted at the Kansas Agricultural Watershed (KAW) field laboratory located near Manhattan, KS, USA, from September 2015 through September 2019. This study utilized three methods of P fertilizer management (no P, fall broadcast P, and spring injected P) each expressed with and without a winter grown cover crop. The spring injected method of P fertilizer application consistently lost less total P and DRP compared to the fall broadcast method of applying P fertilizer highlighting the importance of using P fertilizer placement to protect water quality. Findings from this study show that the addition of a cover crop during a normally fallow period increased dissolved reactive P loss in 3 of 4 years representing an unintended consequence of a traditionally recognized conservation practice. Cover crops also decreased sediment loss with greater reductions in sediment loss coming from the P fertilized cover crop treatments. Soil test data for samples collected from KAW field lab found that spring subsurface placement of P fertilizer did not result in lesser concentrations of either Mehlich-III not total P in the top 0-5 cm compared to fall broadcast P. The spring injected P fertilizer without a cover crop treatment had lesser concentrations of water-extractable P (WEP) in the top 0-2.5 cm compared to the fall broadcast with and without cover crop treatments; however, when a cover crop was added to the spring injected treatment, WEP was found to be equal to the two fall broadcast treatments The final portion of this research was conducted from fall 2019 through fall 2021 at locations near both Manhattan, KS, USA and Leonardville, KS, US, and examined the impact of six choices in winter cereal cover crops [included winter barley (Hordeum vulgare), winter oat (Avena sterilis), cereal rye (Secale cereale), triticale (X Tritico-secale), winter wheat (Triticum aestivum), and Cereal Killer Blend (1:1:1:1 of barley:oat:rye:triticale)] on P release from cover crop tissue, residue persistence, and the effect of cover crop choice on nutrient cycling throughout the cash crop growing season. This study found winter wheat to have the greatest potential for P release immediately following termination; however, after one week post termination, P concentrations in winter wheat residues were similar to other observed cover crops. Oats were observed to have lowest residue persistence and also to release assimilated nutrients faster than the remaining species. Marginal differences between winter barley, cereal rye, and triticale were observed with regards to P concentration, residue persistence, and nutrient cycling; however, these differences were not biologically significant. Results from this and the aforementioned studies highlight the importance and implications of management decisions when developing agricultural management practices to protect surface water quality.
Book Synopsis Sustainable Agriculture Research and Education in the Field by : National Research Council
Download or read book Sustainable Agriculture Research and Education in the Field written by National Research Council and published by National Academies Press. This book was released on 1991-02-01 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: Interest is growing in sustainable agriculture, which involves the use of productive and profitable farming practices that take advantage of natural biological processes to conserve resources, reduce inputs, protect the environment, and enhance public health. Continuing research is helping to demonstrate the ways that many factorsâ€"economics, biology, policy, and traditionâ€"interact in sustainable agriculture systems. This book contains the proceedings of a workshop on the findings of a broad range of research projects funded by the U.S. Department of Agriculture. The areas of study, such as integrated pest management, alternative cropping and tillage systems, and comparisons with more conventional approaches, are essential to developing and adopting profitable and sustainable farming systems.
