Download or read book Liquid Swine Manure as a Nitrogen Source for Corn and Soybean Production written by Sudipta Rakshit and published by . This book was released on 2002 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Liquid swine (Sus scrofa domesticus) manure is a large crop nutrient resource in Iowa, but one that should be managed appropriately to gain maximum effectiveness. A multi-year project was initiated on producers' fields to determine the impact of liquid swine manure-N on corn (Zea mays L.) and soybean [Glycine max (L.) Merr.] production. Liquid swine manure was injected or broadcast applied (two sites) in field-length strips. The intended rates for corn-soybean were 0, 84, and 168 kg total manure-N ha−1, and for corn-corn and soybean-corn were 0, 112, and 224 kg total-N ha−1. Manure samples were collected during application, and in conjunction with applicator calibration, used to calculate total-N rates. Four fertilizer-N rates (0, 45, 90, and 135 kg N ha−1 for corn-soybean and 0, 67, 135, and 202 kg N ha−1 for corn-corn) were applied to small split-plots within each manure strip to measure response to additional N. Corn N status indicators and grain yield showed frequent and large increase to the low manure-N rate. Smaller additional yield increase was found with the high liquid swine manure-N rates at the most responsive sites. Corn typically produced highest yield increase to additional fertilizer-N when manure was not applied, frequent increase with the low manure rate (magnitude depending upon the site N responsiveness), and no response with the high manure rate. While it was not possible to determine the specific first-year availability of the liquid swine manure-N, we found no reason to estimate it is much different than fully crop available. Liquid swine manure application increased soybean grain yield at several sites, and did not reduce yield. When manure total-N was applied to soybean at rates

Download or read book Liquid Swine Manure as a Phosphorus Source for Corn soybean Rotation written by Mónica M. Barbazán and published by . This book was released on 2004 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt: Improving management guidelines may result in more efficient use of liquid swine manure and in reduced environmental risks. Two different studies were conducted on farmers' fields using liquid swine manure on corn and soybean crops. One study used conventional research plot methodology with objectives to evaluate (a) manure P effects on early plant growth, early P plant uptake, grain yield, and P removal with grain, (b) crop response to fertilizer P applied in addition to manure P applied once for two crops; and (c) evaluate liquid swine manure P application on soil P measured with three routine soil-P tests (Bray-1 P, Olsen, and Mehlich 3 P), and two environmental tests (Iron-oxide and Water extraction). The second study used a strip-trial methodology using precision agriculture technologies and its objective was to compare three statistical methods (classical, geostatistic, and Markov randon field model) to study soil-test P spatial variability after applying liquid swine manure with variable-(VR) and fixed-(FR) rate application methods. Early growth and P uptake were not directly related to manure or fertilizer P application. Grain yield responsive sites tested less

Download or read book Effects of Liquid Swine Manure and Its Components on Heterodera Glycines Population Densities and Soybean Growth and Yield written by Dean Alan Reynolds and published by . This book was released on 2000 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: The effects of application of swine manure and a comparable rate of inorganic fertilizer to corn on soybean cyst nematode, Heterodera glycines, population densities and soybean growth and yield the following year were studied in two two-year corn and soybean rotations. Soybean heights and yields were increased by manure and inorganic fertilizer that were applied the previous year in corn. Heterodera glycines egg population densities were reduced 48 to 64% in the two experiments after a year of corn. Egg population densities at corn harvest in both experiments were the same where manure or fertilizer was applied and in the untreated, planted control. Nutrient source and whether corn was or was not planted the first year had no influence on H. glycines egg population densities after soybean harvest the second year. In another set of four experiments, the effects of application of swine manure and inorganic fertilizer to soil prior to planting soybeans were evaluated. Both nutrient treatments reduced soybean plant population densities in three experiments and increased plant heights in all four experiments.

Download or read book Liquid Swine Manure and Nitrogen Fertilizer Effects on Soybean Yield Soil Profile Nitrogen and Mineralization Rates written by Jodi Marne DeJong and published by . This book was released on 1995 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Impact of Liquid Swine Manure on Nutrient Loss and Bacteria Transport to Subsurface Drainage Water Under Corn soybean Rotations written by Chi Kim Hoang and published by . This book was released on 2012 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Use of Anaerobically Digested Swine Manure in Corn Production written by Esteban Roberto Loria and published by . This book was released on 2002 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: The processing of swine (Sus scrofa L.) manure in an anaerobic digester for biogas production is not a complete waste-treatment process. Therefore, anaerobically digested swine manure must be utilized in some manner, most logically land applied for crop nutrient utilization. A laboratory incubation study was conducted for 112 days. The treatments were a factorial combination of nutrient sources (raw swine manure, digested swine manure, and inorganic fertilizer) at five nutrient rates (for P were 0, 12.5, 25, 37.5, 50 mg P kg−1 and for N were 0, 50, 100, 150, 200 mg N kg−1). Also a field study was conducted during 2000-2001 growing seasons. Raw and digested swine manure was fall applied as main plots, with three manure-N rates as subplots, and six fertilizer-N rates as a sub-subplots. Corn was the previous crop each year; and a new area was used each year. Response to manure-N was determined through grain yield, N uptake, plant N status assessments, and soil inorganic-N change. The objectives of these studies were (1) to compare the effects of anaerobically digested liquid swine manure (15 d residence time in the digester) and raw swine manure on change in soil test P and soil inorganic-N and (2) to compare the N supply from raw and digested swine manure for corn production; determining soil N, plant-N, and grain yield responses. From our incubation study, we observed no differences between raw and anaerobically digested swine manure in regard to initial NH4-N supply, disappearance of NH4-N, N03-N formation, pH suppression, or change in soil test P. However differences between inorganic fertilizer and the manure sources were found in all cases. We conclude that digested swine manure is a valuable nutrient source that producers can use for crop production, and they should manage it as they would raw swine manure. One would expect similar crop P availability from both manure sources and fertilizer over time. On the short term, however (less than one month), P availability would be expected to be less from swine manure, either raw or digested. Both raw and digested swine manure provide large amounts of inorganic-N, but approximately 20% less than all inorganic fertilizer N (within 4 months of application). The initial nitrification of the manure NH4-N parallels nitrification of fertilizer NH4-N, and implies management should be similar to fertilizer based NH4-N to best utilize this N component of swine manure. Anaerobically digested swine manure is a valuable source of nutrients that can be used in crop production. After two growing seasons results indicated no difference between raw and digested swine manure as a plant N source. Nitrogen equivalence supply from both raw and digested swine manure to corn varied between years, with estimated 100% in 2000 but only 50% in 2001. This difference was attributed to varying growing seasons and loss potential from time of fall application of the manure compared to spring-applied fertilizer. Late fall and early spring sampling indicated rapid N conversion to N03-N. From this work, digested swine manure can readily supply adequate N for corn production, and should be managed in a similar fashion as raw manure. In future research of this nature, evaluations of different application periods (spring vs. fall), soils, and climatic seasons will be important.

Download or read book Effects of Tillage Nitrogen Source and Nitrogen Rate on Corn Response and Selective Soil Properties in a Corn soybean Rotation written by David Kwaw-Mensah and published by . This book was released on 2005 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: Corn producers in Iowa adopt no-tillage (NT), strip-tillage (ST) or chisel plow (CP) and either commercial fertilizer or liquid swine manure produce corn. The rising cost of commercial N fertilizers raises concerns about using alternative and viable sources of N and P for corn production. The objectives of this study were to evaluate 1) the responses of corn to three tillage treatments (NT, ST and CP) and four N rates (0, 84, 168 and 252 kg N ha−1) of liquid either liquid swine manure or commercial fertilizer N and 2) the effects of tillage on soil temperature, compaction, moisture storage and water extraction by corn root system. The study was conducted at the Northeast Research and Demonstration Farm of Iowa State University near Nashua. The soil at the study site is Kenyon (fine loamy, mixed mesic Typic Hapludolls) soil. The experimental design was a randomized complete block with split-plot arrangement in three replications. The tillage treatments were randomly assigned to each replication as main plots and the N rates of either N source as the subplot. Results of the study showed no significant impact of tillage treatments on plant biomass and corn yield. Increasing soil N application increased corn yield and corn stalk NO3-N concentrations for both N sources. At N rates higher than 100 kg N ha−1, corn showed a luxury consumption of N for both N sources. Soil temperature in the ST treatment compared favorably with CP, but showed an overall advantage over NT, which consistently recorded lower soil temperatures and ERI. Soil moisture storage for all tillage treatments at the top 30 cm and 0 to 120 cm were not significantly different for both N sources. Soil water extraction by corn roots did not show significant differences for all tillage treatments and both N sources. Soil penetration resistance measurements for tillage treatments did not show significant differences but increased with soil depth especially in the top 20-cm soil depth and late in the growing season for both N sources.

Download or read book Animal Manure written by Heidi M. Waldrip and published by John Wiley & Sons. This book was released on 2020-05-05 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt: The majority of meat, milk, and eggs consumed in the United States are produced in concentrated animal feeding operations (CAFO). With concentrated animal operations, in turn comes concentrated manure accumulation, which can pose a threat of contamination of air, soil, and water if improperly managed. Animal Manure: Production, Characteristics, Environmental Concerns, and Management navigates these important environmental concerns while detailing opportunities for environmentally and economically beneficial utilization.

Download or read book Resource Or Waste written by Ronald A. Fleming and published by . This book was released on 1997 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Handbook of Reference Methods for Plant Analysis written by Yash Kalra and published by CRC Press. This book was released on 2019-12 with total page 320 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Handbook of Reference Methods for Plant Analysis is an outstanding resource of plant analysis procedures, outlined in easy-to-follow steps and laboratory-ready for implementation. Plant laboratory preparation methods such as dry ashing and acid and microwave digestion are discussed in detail. Extraction techniques for analysis of readily soluble elements (petiole analysis) and quick test kits for field testing are also presented. This handbook consolidates proven, time tested methods in one convenient source. Plant scientists in production agriculture, forestry, horticulture, environmental sciences, and other related disciplines will find the Handbook a standard laboratory reference. The Handbook was written for the Soil and Plant Analysis Council, Inc., of which the editor is a board member. The council aims to promote uniform soil test and plant analysis methods, use, interpretation, and terminology; and to stimulate research on the calibration and use of soil testing and plant analysis. This reference will help readers reach these important goals in their own research.

Download or read book Improving the Fertilizer Value of Swine Manure In Depth Study of Nitrogen Transformations in Soils Corn Nitrogen Uptake and Swine Diet Manipulation to Optimize Manure as a Resource for Agriculture written by Ines C. Daverede and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Innovative Bio products for Agriculture written by Agnieszka Makara and published by Nova Science Publishers. This book was released on 2016 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The studies on pig manure utilisation are focused on two areas: the use of the manure to fertilise soil and the treatment of the raw and digested manure. Essentially, this book concentrates on the separation of the treated slurries into liquid and solid phases, and the subsequent use of the two obtained products. The fertilising effects of the manure originating from Polish pig farms on the croplands belonging to the pig farm owners are discussed. Due to high phosphorus content in the soil, the recommended manure dose was decreased to match the acceptable quantities of both phosphorus and nitrogen. Additionally, a newly developed complex pig manure treatment and filtration technology called the AMAK process is presented.

Download or read book Agricultural Nonpoint Source Pollution written by William F. Ritter and published by CRC Press. This book was released on 2000-12-15 with total page 356 pages. Available in PDF, EPUB and Kindle. Book excerpt: If you work in the water quality management field, you know the challenges of monitoring and controlling pollutants in our water supply. The increasing problem of agricultural nonpoint source pollution requires complex solutions. Agricultural Nonpoint Source Pollution: Watershed Management and Hydrology covers the latest techniques and methods of managing large watershed areas, with an emphasis on controlling non-point source pollution, especially from agricultural run-off. Written by leading experts, the book includes topics such as: nitrate and phosphorus pollution, pesticide contamination, erosion and sedimentation, water-table management, and watershed management. The authors discuss the effects of agricultural run-off - one of the most intransigent problems now faced by environmental engineers and hydrologists. They explore each issue with an eye towards the integrated management of water quality and water resources over a defined area or region. This single-source reference gives you a complete understanding of the whats, whys, and hows of nonpoint source pollution - and more importantly of how to monitor and manage it. Agricultural Nonpoint Source Pollution: Watershed Management and Hydrology provides a broad but detailed overview that helps you to comprehend the intricacies of the problem and puts you on the path to finding the answers.

Download or read book The Effect of Composted Swine Manure Amendments on the Nitrogen Mineralization of Legume Green Manures written by Ryan Elton Rusk and published by . This book was released on 2003 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: The increased use of synthetic chemicals and fertilizers has led to groundwater and surface water contamination. These environmental concerns have led many farmers to organic production methods, in which no synthetic chemicals and fertilizers are allowed, thus proper utilization of legume green manures and livestock manure are key components in providing crops with needed nutrients. A long-term cropping system study was initiated near Sutherland, IA, in which a three-year organic rotation of corn (Zea mays L.)-soybean (Glycine max L. Merr)-oat (Avena sativa L.)/alfalfa (Medicago sativa L.) or red clover (Trifolium pratense L.) was compared to a four-year organic rotation of corn-soybean-oat/legume-legume hay and a two-year conventional rotation of corn-soybean. Half of the organic treatments were supplied with composted swine (Sus scrofa domesticus) manure while the other half had no compost amendments. Nitrogen (N) availability was measured throughout the season in the three-year organic and conventional rotations, along with the measurements taken on soil moisture content, crop yields, and economic feasibility of each rotation. Plowdown N yields of alfalfa were higher than red clover in 2001, but not much lower than red clover in 2002 because a dry summer during the seeding season resulted in a poor stand of alfalfa. In-situ N mineralization values showed that compost reduced the mineralization of red clover by 27% six weeks after planting, while increasing the N availability following alfalfa by 7.2%. The late spring nitrate test indicated that all organic treatments had sufficient amounts of nitrate for corn growth. Compost amendments increased corn yields by 16% while red clover plots out-yielded alfalfa by 9.2%. Red clover with compost had the highest yields in both 2001 and 2002 and the organic system yielded 11.1% higher than the conventional plots in 2002. No differences were found in soil moisture contents between the conventional and organic systems. The nitrate leaching potential following corn harvest was reduced by 62.5% in the organic system when compared to the two-year rotation. Economic analysis determined that red clover with compost amendments had the highest net returns in both organic systems, which proved to be economically competitive with the conventional two-year rotation.

Download or read book Nitrogen in Agricultural Systems written by James Stuart Schepers and published by ASA-CSSA-SSSA. This book was released on 2008 with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt: Review of the principles and management implications related to nitrogen in the soil-plant-water system.

Download or read book Fertilizer Suggestions written by E. R. Flint and published by . This book was released on 1905 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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.