Welcome to the Plant Management Network's Focus on Corn, a web-based portal that includes educational webcasts, searchable resources, and websites that help plant practitioners enhance the health, management, and production of corn crops. en-us http://www.plantmanagementnetwork.org/infocenter/topic/focusonCorn/ The Plant Management Network Laura Lindsey This presentation will help consultants, growers, and other practitioners in the North Central Region of the U.S. Nitrogen management of corn related to weeds will be discussed. Specifically, three questions will be addressed, "How does nitrogen application rate and critical time of weed removal influence corn grain yield?" "How much nitrogen do weeds remove?" and lastly, "What happens to nitrogen in weeds?" By the end of this presentation, the practitioner should know more about nitrogen uptake of weeds in a corn grain production system and how that nitrogen is eventually released back to the soil after weeds are controlled. Wed, 1 May 2013 10:00:00 CST http://www.plantmanagementnetwork.org/edcenter/seminars/corn/NitrogenManagementWeeds/ http://www.plantmanagementnetwork.org/edcenter/seminars/corn/NitrogenManagementWeeds/ William Kranz This presentation will help consultants, growers, and other practitioners in the irrigated regions of the US. The presentation discusses some basic soil water terminology and how to use soil water monitoring equipment to determine how much water the crop has removed from the soil. Using Watermark soil water sensors as an example, procedures for how to prepare the soil water sensor and how to install them in the field were presented in Part I of the presentation. In Part II of the presentation, we discussed how to use of a modified atmometer to verify that soil water sensors are responding in the correct way. Lastly, several water conservation practices were discussed including crop residue management, planting a shorter season hybrid and reducing the plant population. By the end of the presentation the viewer will have the necessary information to initiate an irrigation scheduling program and where to find additional information. Wed, 1 May 2013 10:00:00 CST http://www.plantmanagementnetwork.org/edcenter/seminars/corn/IrrigationWater/ http://www.plantmanagementnetwork.org/edcenter/seminars/corn/IrrigationWater/ Ron Hammond This presentation will help consultants, growers, and other practitioners in the Midwest, Eastern, and Mid-Atlantic regions manage their slug problems in field crops when using no-till production practices. It will cover basic biology of slugs including life history and how it relates to grower practices, and then discuss an IPM approach to managing the problem. By the end of this presentation, the practitioner should know more about slugs in field crops, and be able to appropriately manage slugs. Thu, 1 Apr 2013 10:00:00 CST http://www.plantmanagementnetwork.org/edcenter/seminars/corn/slugmanagementcorn/ http://www.plantmanagementnetwork.org/edcenter/seminars/corn/slugmanagementcorn/ Mark M. Loux This presentation will help consultants, growers, and other practitioners in the North-Central, and Southern U.S. develop corn herbicide management strategies that ensure effective weed control and maximum yield. The effects of early-season weed infestations on corn yield are described, and the critical period of weed control defined. Three herbicide management strategies are presented, along with research results showing the relative effectiveness of these strategies and the need for comprehensive residual herbicide treatments. Thu, 28 Feb 2013 9:00:00 CST http://www.plantmanagementnetwork.org/edcenter/seminars/corn/WeedManagement/ http://www.plantmanagementnetwork.org/edcenter/seminars/corn/WeedManagement/ William J. Cox This presentation will help growers, consultants, and other agricultural practitioners in the Northeast USA region select or recommend seeding rates for grain corn production on silt loam soils. New hybrid releases in the late 2000s compared with older hybrids respond more favorably to high seeding rates because new hybrids lodge less, have improved drought tolerance, and may respond to higher rates in narrow rows. Nevertheless, Cornell still recommends seeding rates of 30,000 kernels/acre, similar to recommendations in the early 1990s, despite these improved traits. We will present studies conducted in NY on silt loam soils over the last 20 years that repeatedly have shown that seeding rates of about 30,000 kernels/acre result in close to optimum yields. We will highlight recent field-scale studies (farmer-researcher partnerships) in 2 dry years that show that two recent hybrid releases had maximum relative profit at seeding rates above 30,000 at only 1 (40,000 kernels/acre) of 8 comparisons in 30-inch rows, at 2 (32,800 kernels/acre) of 4 comparisons in twin rows, and 2 (34,500 and 38,700 kernels/acre) of 4 comparisons in 20-inch rows. Based on results of these studies, recommended seeding rates in New York will not change. Nevertheless, because of inconsistent responses across years, sites, and hybrids, we recommend that growers test the response of new selected hybrids to seeding rates on their different fields. Growers can now easily conduct replicated strip-tests on new hybrids at different seeding rates because of the ease in varying seeding rates with new corn planters and the prevalence of yield monitors on most combines. The results of seeding rate studies by growers could also lead to implementation of variable seeding rates within fields. Thu, 31 Jan 2013 11:00:00 CST http://www.plantmanagementnetwork.org/edcenter/seminars/corn/CornSeedingRates/ http://www.plantmanagementnetwork.org/edcenter/seminars/corn/CornSeedingRates/ David Mengel Under low fertility, responsive conditions, the use of a starter P or K fertilizer can enhance yields. Phosphorus is normally thought of as the nutrient most important in Starter fertilizers, but N, P, K, S and Zn can also provide benefits when applied in a band close to the germinating seed. Some of the benefits normally associated with starter fertilizer use are: enhanced early growth; hastened crop maturity; lower grain moisture at harvest; increased yield at low soil test levels. Starter fertilizers can be applied in many ways, including the traditional 2x2 placement 2 inches to the side and 2 inches below the seed, surface or dribble banding, or as pop-up or in-furrow placed. One of the key issues when using starter fertilizer is the potential for ammonia or salt injury. To reduce the potential for injury to germinating seed and seedlings, limit the N plus K content to 6-10 pounds per acre; on a 30 inch row basis (proportionally higher rates can be applied in narrower rows). Thu, 20 Dec 2012 10:00:00 CST http://www.plantmanagementnetwork.org/edcenter/seminars/corn/starterfertilizer/ http://www.plantmanagementnetwork.org/edcenter/seminars/corn/starterfertilizer/ Aaron Hager Waterhemp is a summer annual weed species that has become problematic across much of the corn growing region of the Midwest. This session describes the management of waterhemp in contemporary corn production systems. The session includes a discussion of several biological characteristics of waterhemp in the context of how these characteristics can influence the success or failure of management programs that rely exclusively on herbicides. Herbicide-resistant waterhemp populations are becoming increasingly common, which adds additional challenges to developing an effective waterhemp management program for corn. Thu, 29 Nov 2012 12:00:00 CST http://www.plantmanagementnetwork.org/edcenter/seminars/corn/waterhemp/ http://www.plantmanagementnetwork.org/edcenter/seminars/corn/waterhemp/ Erick Larson This presentation will help growers, consultants, and others select corn hybrids for modern production systems in the Mid-South and around the world. There is a wealth of corn hybrid information available in today's marketplace and evaluating it can easily become a daunting task, if you don't fully recognize how to integrate it and properly analyze it. Beyond yield performance, you should also closely evaluate several plant characteristics which may affect performance and harvestability. The ever-increasing inclusion of technology traits and seed treatments in seed products further heightens your need to understand their benefits and issues on arguably one of the most important decisions you will make each year. Fri, 28 Sep 2012 14:00:00 CST http://www.plantmanagementnetwork.org/edcenter/seminars/corn/CornHybridSelection/ http://www.plantmanagementnetwork.org/edcenter/seminars/corn/CornHybridSelection/ Sally Mallowa Hybrid corn is an economically important crop for the U.S. Corn is susceptible to several foliar fungal diseases, including northern leaf blight (NCLB), caused by Exserohilum turcicum. With susceptible hybrids yield losses can be devastating. This presentation targets growers, crop consultants and extension educators with a goal of improving their knowledge and understanding of this important foliar disease. The races that exist, their symptoms and the race by hybrid corn reaction. In addition the talk will review the conditions favorable for disease development, the disease cycle and management options available and the timing of these. This presentation is part of a set of presentations that will discuss foliar diseases of corn and fungicide recommendations for their management. The presentations are outputs of projects that have been funded by USDA-NIFA. Thu, 24 Aug 2012 15:00:00 CST http://www.plantmanagementnetwork.org/edcenter/seminars/outreach/corn/NorthernCornLeafBlight/ http://www.plantmanagementnetwork.org/edcenter/seminars/outreach/corn/NorthernCornLeafBlight/ Roger W. Elmore, Ph.D. The second part of this presentation helps consultants, growers, and other practitioners specifically in the North-Central U.S. but has implications for anyone interested in maximizing corn yield. We discuss impacts of hybrid choice, plant population, planting date, row spacing, and crop rotation on yield. In addition, we talk about some factors limiting yield. This part presents data from National Corn Grower Association Corn Yield Contest winners and recent management from Iowa State University as a framework for the discussion. At the end of this presentation, you will understand the importance of optimum crop management practices in maximizing yield and consider the promises and challenges of reaching a national average of 300 bushels per acre by 2030. Thu, 26 Jul 2012 15:00:00 CST http://www.plantmanagementnetwork.org/edcenter/seminars/Corn/maxyieldpart2/ http://www.plantmanagementnetwork.org/edcenter/seminars/Corn/maxyieldpart2/ Alison E. Robertson Gray leaf spot is arguably the most important yield limiting disease of corn worldwide. It is a serious threat to production in the U.S. Corn Belt. The goal of this presentation is to help growers, crop consultants and extension educators to improve their knowledge and understanding of this important foliar disease. The talk will review characteristic symptoms of gray leaf spot, and discuss the disease cycle and conditions that favor infection by the pathogen, Cercospora zeae-maydis, and subsequent disease development. Furthermore, management options will be discussed with regards to the disease cycle. This presentation is part of a set of presentations that will discuss foliar diseases of corn and fungicide recommendations for their management. The presentations are outputs of projects that have been funded by USDA-NIFA. Thu, 26 Jul 2012 15:00:00 CST http://www.plantmanagementnetwork.org/edcenter/seminars/outreach/corn/grayleafspot/ http://www.plantmanagementnetwork.org/edcenter/seminars/outreach/corn/grayleafspot/ Roger W. Elmore, Ph.D. The first part of this presentation helps consultants, growers, and other practitioners interested in corn regardless of their location. This part examines the basis of corn yield by looking at yield and its components and what it takes to maximize yield. Leaf area dynamics and the importance of maximizing kernel numbers are key learning points. At the end of this part of the presentation, you will understand how yield components work together to produce yield, the importance of maximizing leaf area, and the impact of stress at different development stages on kernel numbers and yield. Fri, 22 Jun 2012 11:00:00 CST http://www.plantmanagementnetwork.org/edcenter/seminars/Corn/maxyieldpart1/ http://www.plantmanagementnetwork.org/edcenter/seminars/Corn/maxyieldpart1/ Christian Krupke, Ph.D. The vast majority of the annual crop acreage planted in North America this year will use neonicotinoid treated seed. Neonicotinoids are extremely toxic to honey bees, and recent research has suggested that honey bees that forage near these types of plantings may be at risk and that the risk of lethal exposure to these insecticides is highest during the period while crops are being planted. Dr. Christian Krupke (Purdue Extension Entomology) will present an overview of the current research at Purdue and elsewhere and offer suggestions for field crop producers that can minimize the chances of honey bee exposure to these chemicals in the field. Wed, 30 May 2012 11:00:00 CST http://www.plantmanagementnetwork.org/edcenter/seminars/Corn/protectinghoneybees/ http://www.plantmanagementnetwork.org/edcenter/seminars/Corn/protectinghoneybees/ Chad Lee, Ph.D. No-tillage corn production provides many advantages for soils and, in some regions, yield. No-tillage corn results in yield losses in other regions, but ranks at the top in economic returns. Understanding the benefits and challenges of no-tillage corn as well as some general points on production management are critical to maximizing yield and benefits of no-tillage corn. Wed, 30 May 2012 11:00:00 CST http://www.plantmanagementnetwork.org/edcenter/seminars/Corn/notill/ http://www.plantmanagementnetwork.org/edcenter/seminars/Corn/notill/ Jeff Coulter, Ph.D. Rotating alfalfa with corn can increase corn yield potential due to improved soil physical properties that enhance water infiltration and root extension, altered soil microbial communities, and reduced pest pressure. In addition, fertilizer nitrogen (N) requirements are commonly reduced by about 100% for first-year corn and 50% for second-year corn following a good stand of alfalfa. However, N guidelines for corn after alfalfa vary among Corn Belt states and growers have questioned the reliability of alfalfa N credits in high-yield environments. In this presentation, results are shared from 33 recent on-farm N rate trials in first-year corn after alfalfa in the Upper Midwest. This presentation will help viewers understand factors that affect the response of first-year corn to fertilizer N, and will address related issues such as alfalfa termination timing, alfalfa regrowth prior to termination, and side-dressing of N. Sun, 1 Apr 2012 17:00:00 CST http://www.plantmanagementnetwork.org/edcenter/seminars/Corn/NitrogenManagement/ http://www.plantmanagementnetwork.org/edcenter/seminars/Corn/NitrogenManagement/ Charles Woloshuk, Ph.D. Corn is one of the most important crops worldwide. With respect to food security, ear rot diseases and the associated mycotoxins threaten corn as a food and feed source because the mycotoxins affect both human and livestock health. As such, the goals of this lecture are 1) to learn how to recognize the important ear rot diseases of corn, 2) to understand the relationship between ear rot diseases and mycotoxin contamination; 3) to learn the basic principles ear rot disease management, and 4) to understand how to store grain properly to reduce risk of spoilage. Sun, 1 Apr 2012 17:00:00 CST http://www.plantmanagementnetwork.org/edcenter/seminars/Corn/EarAndKernelMold/ http://www.plantmanagementnetwork.org/edcenter/seminars/Corn/EarAndKernelMold/ Harold F. Reetz, Jr., Ph.D. Much of the Corn Belt is dependent upon subsurface (tile) drainage to be productive. Many of our best corn growing soils are poorly drained and could not be used for crop production before tile drainage was installed. Systems designed to efficiently remove water in the spring and fall to facilitate field work continue to drain the water from fields even after the excess rainfall has stopped. Drainage Water Management (DWM) systems allow farmers to save some of the water so that it can be used by the crop, by stopping or reducing the water flow from tile lines. DWM involves installing control structures, which use stop logs to create dams within the tile line that can be sued to adjust the water table and the rate of water flow from the field. These controls can be lowered at different times during the growing season to allow field to dry out for field work, or raised to hold back the water for more efficient use by the crop. Holding back the water helps to increase water table recharge, too. DWM is also a positive management practice for reducing loss of nitrogen and phosphorus from crop fields, increasing nutrient use efficiency and reducing potential for contamination of downstream water resources. The USDA/NRCS has launched a major effort to promote the use of DWM, including incentives for technical assistance and for installation of DWM systems. Field studies by the Agricultural Drainage Management Coalition (ADMC) and various university, industry, and farmer cooperators found that DWM reduced water loss by 35%, nitrate loss by 34%, and increased crop yield by 1.5% over 20 locations in 5 states. Soil type and weather variability affect results at any one location, but there are many positive effects of using DWM. Sun, 1 Apr 2012 17:00:00 CST http://www.plantmanagementnetwork.org/edcenter/seminars/Corn/AgDrainageManagement/ http://www.plantmanagementnetwork.org/edcenter/seminars/Corn/AgDrainageManagement/ John E. Sawyer, Ph.D. This presentation will help crop advisers, consultants, and producers in the Corn Belt and other areas where corn is grown understand the soil nitrogen cycle and how fundamental processes in the cycle relate to nitrogen management practices for corn production. The presentation covers nitrogen as an essential element, the occurrence of nitrogen in the environment, reactivity of nitrogen, nitrogen sources, and various microbial and chemical processes in the nitrogen cycle. Those processes most important and related to crop fertilization are discussed in detail and are then related to nitrogen management practices that influence availability and supply for corn uptake. The information presented will help crop advisers and producers with promotion and implementation of improved practices for corn production and environmental protection. Sun, 1 Apr 2012 17:00:00 CST http://www.plantmanagementnetwork.org/edcenter/seminars/Corn/NitrogenCycle/ http://www.plantmanagementnetwork.org/edcenter/seminars/Corn/NitrogenCycle/ Jeff Coulter, Ph.D. With high corn yields recently reported by yield contest participants, there is strong interest among growers to adopt agronomic practices that increase yield. In this presentation, numerous agronomic factors were evaluated for their potential to increase corn yield in different situations. Prerequisites for high corn yield include management of pests and soil fertility, so consequently these factors were not covered in this presentation. A review of recent research from across the Corn Belt indicates that decisions related to hybrid selection, crop rotation, tillage system, and stand establishment have the greatest potential for increasing yield. In contrast, decisions related to planting date, plant population, and row spacing have been shown to have a relatively low potential for increasing corn yield when compared to current grower practices. This presentation will help growers and agronomists recognize key opportunities for increasing corn yield within their cropping systems. Sun, 1 Apr 2012 17:00:00 CST http://www.plantmanagementnetwork.org/edcenter/seminars/Corn/NarrowingtheYieldGap/ http://www.plantmanagementnetwork.org/edcenter/seminars/Corn/NarrowingtheYieldGap/ Kenneth Hellevang, Ph.D. Proper corn storage management is critical to maintain the quality of stored corn. The presentation will provide growers across the U.S. with various management practices for corn storage. The talk particularly covers required moisture contents for storage at various corn temperatures, recommended corn temperatures during storage, aeration, and procedures for monitoring stored corn. Sun, 1 Apr 2012 17:00:00 CST http://www.plantmanagementnetwork.org/edcenter/seminars/Corn/Storage/ http://www.plantmanagementnetwork.org/edcenter/seminars/Corn/Storage/ Snook Pataky, Ph.D. Two rust diseases occur on corn grown in North America: common rust, caused by Puccinia sorghi, and southern rust, caused by Puccinia polysora. In some cases, both rusts can occur simultaneously or in the same geographic region. Because symptoms of the two diseases are similar, correct diagnosis can be difficult especially for an inexperienced observer. This first presentation describes methods to differentiate common and southern rust in the field and in the lab. This second presentation focuses on common rust. As the name implies, common rust is the most widespread of the two rusts, particularly in the midwestern and northern regions of the North American Corn Belt. In this second presentation, the basic life cycle of Puccinia sorghi and the epidemiology of common rust are described. Factors that cause the disease to become problematic and effective methods of control also are discussed. Sun, 1 Apr 2012 17:00:00 CST http://www.plantmanagementnetwork.org/edcenter/seminars/Corn/CommonRust/ http://www.plantmanagementnetwork.org/edcenter/seminars/Corn/CommonRust/ Joseph L. Spencer, Ph.D. Michael E. Gray, Ph.D. This two-part presentation will help consultants, growers, and other practitioners in the Corn Belt understand the role of western corn rootworm (WCR) biology and behavior in insect resistance management. It will also help them to better understand corn growers' practices with respect to their use of Bt hybrids to manage western corn rootworms. The first presentation begins with a review of WCR biology, the history of corn rootworm pest species and the WCR's adaptation to crop rotation that began in Illinois. The use of Bt-transgenic corn for rootworm management is introduced along with assumptions about WCR behavior in refuge and Bt corn. Data on WCR behavior and mating in several different configurations of refuge and Bt- corn are presented to illustrate how the placement of refuge affects the biology and ecology of mating WCR beetles. The second presentation offers results of producer surveys taken at the regional Corn and Soybean Classic meetings held throughout the state of Illinois. The surveys suggest that refuge compliance has been declining in recent years. The potential implications of declining refuge compliance will be discussed. In future years, the use of seed mixtures (Bt and non-Bt seed) will likely form the foundation for most Bt resistance management plans in the Corn Belt. By the end of the presentation, the practitioner should have a much better grasp of current Bt usage, refuge compliance levels, an improved understanding of seed mixtures and their use in resistance management plans, and overall improved knowledge of corn rootworm behavior and biology. Sun, 1 Apr 2012 17:00:00 CST http://www.plantmanagementnetwork.org/edcenter/seminars/Corn/CornRootwormAndBTCorn/ http://www.plantmanagementnetwork.org/edcenter/seminars/Corn/CornRootwormAndBTCorn/ Snook Pataky, Ph.D. Two rust diseases occur on corn grown in North America: common rust, caused by Puccinia sorghi, and southern rust, caused by Puccinia polysora. In some cases, both rusts can occur simultaneously or in the same geographic region. Because symptoms of the two diseases are similar, correct diagnosis can be difficult especially for an inexperienced observer. This first presentation describes methods to differentiate common and southern rust in the field and in the lab. The second presentation focuses on southern rust. As the name implies, southern rust is found most frequently in the southern U.S., where weather conditions are more similar to tropical environments that favor its development. Although not usually widespread throughout the majority of the North American Corn Belt, P. polysora can be a very aggressive pathogen which results in rapid disease development. Following periods of particularly warm, humid weather, outbreaks of southern rust have occurred in recent summers in Nebraska, Illinois and Wisconsin; and a new race of P. polysora was discovered in 2008 in Georgia. This presentation describes the basic life cycle of Puccinia polysora and the epidemiology of southern rust. Factors that cause the disease to become problematic and effective methods of control also are discussed. Sun, 1 Apr 2012 17:00:00 CST http://www.plantmanagementnetwork.org/edcenter/seminars/Corn/SouthernRust/ http://www.plantmanagementnetwork.org/edcenter/seminars/Corn/SouthernRust/ William J. Cox, Ph.D. This presentation will help consultants, growers, and other practitioners in the Northeast USA region recommend or select seeding rates for corn silage production on silt loam soils. New hybrid releases in the late 2000s compared with hybrid releases in the 1990s have been reported to respond more favorably to high seeding rates for grain production but there is limited data on responses for silage production. We will present studies conducted in NY on silt loam soils in the 1990s that show that silage yields peaked out at seeding rates between 36,000 and 40,000 kernels/acre, but quality (in vitro true digestibility and crude protein) decreased as seeding rates increased. Consequently, we recommended seeding rates at about 34,000 kernels/acre up until 2009. A recent study (2008 and 2009) with different hybrid types indicated that yields once again peaked out at seeding rates between 35,000 and 40,000 kernels/acre, but with no negative impact on fiber digestibility or starch concentrations (although neutral detergent fiber and crude protein decreased slightly) as seeding rates increased. Based on this recent study, we now recommend seeding rates on silt loam soils of 35,000 kernels/acre for all hybrid types, including brown midrib hybrids. Sun, 1 Apr 2012 17:00:00 CST http://www.plantmanagementnetwork.org/edcenter/seminars/Corn/ForageSeedingRates/ http://www.plantmanagementnetwork.org/edcenter/seminars/Corn/ForageSeedingRates/ Kenneth Hellevang, Ph.D. Drying corn can be expensive. This presentation will provide growers across the U.S. with various options for drying corn. Energy conservation features of dryers and methods to reduce energy consumption while maintaining corn quality are also covered, as well as information on the effect of drying on test weight and how to calculate shrink. Sun, 1 Apr 2012 17:00:00 CST http://www.plantmanagementnetwork.org/edcenter/seminars/Corn/Drying/ http://www.plantmanagementnetwork.org/edcenter/seminars/Corn/Drying/ Emerson D. Nafziger, Ph.D. This presentation will help consultants, growers, and other practitioners in the Corn Belt as they consider the advisability of harvesting corn stalk residue after grain harvest for use as biofuel. Basic information about residue is presented, along with results of a study on the effects of residue removal, tillage, and nitrogen on continuous corn grain yields. We will consider how other management factors might need to change if residue is removed, and will discuss the effects of removal on sustainability of the continuous corn system. Sun, 1 Apr 2012 17:00:00 CST http://www.plantmanagementnetwork.org/edcenter/seminars/Corn/ResidueManagement/ http://www.plantmanagementnetwork.org/edcenter/seminars/Corn/ResidueManagement/ Bill Johnson, Ph.D. Weed competition in corn has reemerged as an important management consideration as herbicide use patterns in corn have changed with the adoption of Roundup Ready and Liberty Link hybrids. Prior to adoption of herbicide-resistant hybrids, weed management programs in corn were heavily reliant on use of full rates of atrazine-based preemergence herbicides and selective postemergence herbicides to control escapes. With rapid adoption of herbicide-resistant hybrids, growers are reducing reliance on broadspectrum, preemergence herbicides and increasing reliance on postemergence herbicide such as glyphosate (Roundup) and glufosinate (Ignite). As a result, we are observing more fields that have early-season weed infestations, and hidden yield losses are occurring because postemergence herbicides are applied later than the optimal timing. The goal of this presentation is to discuss various aspects of weed competition in corn, nitrogen accumulation by weeds, and the effect of various management strategies on corn yield potential. Sun, 1 Apr 2012 17:00:00 CST http://www.plantmanagementnetwork.org/edcenter/seminars/Corn/WeedCompetition/ http://www.plantmanagementnetwork.org/edcenter/seminars/Corn/WeedCompetition/ Tamra Jackson, Ph.D. This presentation will help familiarize consultants, growers, and other practitioners, particularly in the north-central region of the U.S., with plant parasitic nematodes of corn and their management. Recent changes in corn production practices that are expected to inadvertently favor nematode survival are described in the presentation as well as the results from a survey of more than 2,000 Midwest corn fields. The introduction of new seed treatment nematicides of corn have generated renewed interest in monitoring nematode populations. Nematode management and results of some field trials are presented, as well as sampling strategies are described. By the end of the 2-part presentation, practitioners will better understand nematodes of corn, as well as their diversity, distribution, and management. Sun, 1 Apr 2012 17:00:00 CST http://www.plantmanagementnetwork.org/edcenter/seminars/Corn/CornNematodes/ http://www.plantmanagementnetwork.org/edcenter/seminars/Corn/CornNematodes/