Download or read book Effect of Soil Test Values and Fertilization on Corn Soybean and Wheat Tissue Phosphorus and Potassium Concentrations written by Phoo Pye Zone and published by . This book was released on 2019 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Tri-State Fertilization Recommendations were published in 1995 and have provided a framework for phosphorus (P) and potassium (K) nutrient management in field crops. Due to changing soil properties, management practices and advanced crop genetics, there is a need to reassess plant tissue analysis using current soil conditions and modern hybrids. The Tri-State Fertilizer Recommendations use early reproductive leaf nutrient concentrations as a diagnostic of crop nutrient status and grain nutrient concentrations are the basis of fertilizer rates to replace nutrients lost at crop harvest. An evaluation of these nutrient levels in grain and plant tissue samples are therefore important when revising fertilizer recommendations. The goal of this thesis was to evaluate the how crop nutrient levels, especially P and K, are influenced by key soil and management factors. Specific objectives of Chapter 1 were to determine the effects of i) soil test P and K levels and ii) P and K fertilization on early reproductive leaf and grain P and K concentration of corn, soybean and wheat. The specific objective of Chapter 2 was to report grain nutrient concentration and nutrient removal rates in corn, soybean and wheat in Ohio. On-farm P and K fertilizer strip trials in corn, soybean and wheat were conducted at 262 sites in 39 counties across Ohio from 2014 - 2018. At each site, experiments were conducted using a randomized complete block design with 3-4 replications with two treatments, a P or K fertilization treatment and a non-fertilized control. Routine soil nutrient analysis before fertilization, nutrient concentrations in leaves at early reproductive stages, grain yields and grain nutrient concentrations at harvest were measured at each trial. Key site management practices were also recorded through a survey. The effect of soil test P and K level on plant tissue nutrient concentrations was assessed by using regression analysis. Fertilization effects on tissue nutrient concentrations were examined using analysis of variance (ANOVA). Early reproductive leaf and grain P and K concentrations of corn, soybean and wheat generally increased as soil test P and K increased. However, the relationships between soil test levels and nutrient concentrations were weak (all R2

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.

Download or read book New Prospects of Maize written by and published by BoD – Books on Demand. This book was released on 2024-01-24 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: New Prospects of Maize stands at the forefront of agricultural literature, offering an incisive look into the evolution and future pathways of maize cultivation. This volume distills cutting-edge research and progressive methodologies into a compelling narrative on enhancing maize’s role in global food security and sustainability. It traverses critical topics such as genetic diversity, technological advancements in farming practices, and the sophisticated science of genomics, reflecting a commitment to agricultural innovation. Essential for academics, industry experts, and policymakers, this book is a vital tool for anyone invested in the sustainable development of one of the world’s most important cereal crops. With its forward-looking perspectives, New Prospects of Maize is not only a repository of knowledge but also a guide to fostering resilience in a changing agricultural landscape.

Download or read book Plant Analysis written by D Reuter and published by CSIRO PUBLISHING. This book was released on 1997 with total page 585 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plant Analysis: An Interpretation Manual 2nd Edition is an easily accessible compilation of data summarising the range of nutrient concentration limits for crops, pastures, vegetables, fruit trees, vines, ornamentals and forest species. This information is valuable in assessing the effectiveness of fertiliser programs and for monitoring longer term changes in crop nutritional status. New to this edition: *Volume and scope of information accessed from the literature has expanded several-fold. Interpretation criteria for 294 species have been compiled in the tables from more than 1872 published papers. *New chapter on nutrient criteria for forest species. *Includes guidelines for collecting, handling and analysing plant material. An entire chapter is devoted to the identification of nutrient deficiency and toxicity symptoms.

Download or read book Fertilizer Abstracts written by and published by . This book was released on 1972 with total page 508 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil Testing and Plant Analysis written by and published by . This book was released on 1967 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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.

Download or read book Soil Testing and Plant Analysis for Fertilizer Recommendation written by Karl Schneider and published by . This book was released on 1991 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

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.

Download or read book Soil Testing and Plant Analysis for Fertilizer Recommendations written by and published by . This book was released on 1996 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil Testing and Plant Analysis for Fertilizer Recommendations written by and published by . This book was released on 1996 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effect of Tillage Method and Fertilization on the Yield and Elemental Composition of Corn and Soybeans written by William H. Darlington and published by . This book was released on 1983 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Potassium and Nitrogen Influence on Soybeans and Corn Grown Under High Yield Environments written by Gary Roger Deziel and published by . This book was released on 1983 with total page 336 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:

Download or read book Soil Test Interpretation with Corn and Soybeans on a Belknap Silt Loam written by William O. Thom and published by . This book was released on 1985 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Soil Testing and Plant Analysis for Fertilizer Recommendation written by Karl Schneider and published by . This book was released on 1993 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pesticides Documentation Bulletin written by and published by . This book was released on 1968 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: