Cotton, Corn, Soybeans, Sorghum

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1 L OUISIANA CROPS NEWSLETTER Inside this issue: Harvest Aids in Corn and Grain Sorghum Master Farm Program Field Days Behind the Scenes: LSU AgCenter Research Profile Fall Armyworm and Corn Earworm Infesting Louisiana Soybean Where is all my nitrogen going? Part Three: Nitrogen Mineralization Irrigation Efficiency Utilizing Phaucet Wheat Production Guidelines for Susceptibility to Louisiana Bollworms to Pyrethroids AgCenter Contacts 13 Issue Contributors (alphabetically) Dr. Bobby Golden Jared Hardke Dr. Steve Harrison Dr. John Kruse Dr. B. Rogers Leonard Dr. Steve Micinski Donna Morgan Steve Nipper Dr. Daniel Stephenson Josh Temple Cotton, Corn, Soybeans, Sorghum Volume 1, Issue 7 Harvest Aids in Corn and Grain Sorghum Daniel Stephenson, Weed Scientist, LSU AgCenter It is that time of the year when corn and grain sorghum harvest is about to begin in earnest, which puts the spotlight on harvest aids. The question I hear most often is, How can I kill the johnsongrass and morningglories in my corn/grain sorghum before I harvest? There really are not many options, but the options we have will perform if they are applied correctly at the correct time. The primary benefit from applying a harvest aid to corn or grain sorghum is desiccation of green crop/weed material. However, do not expect a harvest aid application to dry down the crop and bring the moisture content down so that you can harvest quicker. Harvest aids only desiccate (brown and crispy) green material. They don t reduce the moisture content of the corn or grain sorghum kernels. However, a harvest aid should help harvesting efficiency and increase combine speed because the amount of green material ran through the combine is reduced. It is important that a producer does not apply a harvest aid to corn or grain sorghum until after the grain has reached physiological maturity and a specific moisture content. In both corn and grain sorghum, black layer formation is the most definitive sign of physiological maturity. In corn, physiological maturity (black layer) typically occurs two to three weeks after the kernel dents. The starch layer in each kernel has reached the cob and a black layer forms at the base of the kernel. Please note that kernels near the tip of the ear develop black layer earlier than kernels near the base of the ear. Typically, grain moisture content at this time ranges from 25 to 35%. Applying a harvest aid prior to black layer or when grain moisture content is greater than 35% may damage the grain. Grain sorghum kernels at the top of the seed head will mature before those at the bottom. Typically, a kernel has reached black layer when it appears pinched at the base and has a black spot (black layer) where the grain was attached to the seed head. At times, the moisture content of black layer grain sorghum kernels will exceed 30%. As a rule, it is important to wait until the grain sorghum kernels have reached 30% or less moisture or grain can be damaged by the application. Whether a producer is considering applying a harvest aid to corn or grain sorghum, he/ she should collect numerous kernel samples from the crop, determine if black layer has formed and the moisture content of the grain. When applied correctly, a harvest aid can increase harvesting efficiency while decreasing potential harvest troubles such as high foreign matter content. The table on the following page are products labeled for use as harvest aids in Louisiana. Note that sodium chlorate, Aim 2EC, and glyphosate are labeled for use in corn and grain sorghum. However, paraquat (Gramoxone Inteon or generic) is NOT labeled as a harvest aid in grain sorghum. Dr. Ed Twidwell

2 Page 2 Volume 1, Issue 7 CROP PRODUCT & RATE Corn and Grain Sodium sorghum lb/acre Corn and Grain Aim sorghum oz/acre + 1% v/v Corn lb ai/acre Example: Roundup oz/acre Grain sorghum 1.9 lb ai/acre Example: Roundup 44 oz/acre Corn lb ai/acre % v/v Example: Gramoxone pt/acre % v/v NIS 2010 Master Farmer Program Field Days Scheduled Donna Morgan The Louisiana Master Farmer Program will once again be hosting several field days and workshops for agricultural producers and industry personnel for the summer and fall of The program, initiated just over 9 years ago, has grown and developed into one of the most widely-known and successful environmental stewardship programs in the southern states. Louisiana is the first and only state to offer this type of voluntary producer-certification program and the support is evident in the growing number of producers enrolled and certified in the program. Louisiana Farm Bureau, Natural Resources Conservation Service, Louisiana Cattleman s Association, Louisiana Department of Agriculture and Forestry, and the LSU AgCenter all partner in this effort to certify producers who complete all three phases of the program and fulfill the necessary requirements. The phases include 8 hours of environmental instruction, attending a model farm or program field day where conservation related topics are discussed, and developing and implementing a comprehensive conservation plan on the entire farming operation. As of January, 2010, 115 agricultural producers have completed these requirements and are certified, with just over 2,600 participants in the program. Field days and workshops that will fulfill the Phase II requirement for 2010 include: August 5 Dean Lee Field Day, Alexandria August 27 Bio-fuels Field Day, Archibald September 30 Forestry/wildlife Field day, DeRidder TIMING OF APPLICATION REMARKS & PRECAUTIONS Apply 7 10 days prior to harvesttion. Desiccation of green vegeta- Apply 3 7 days prior to harvest. Apply after black layer. Use a Desiccation of morningglories. minimum of 10 gpa. Apply 7 days prior to harvest. Apply after black layer and 35% moisture content or less. Apply lower rate by air and higher rate by ground. Apply 7 days prior to harvest. Apply after black layer and 30% moisture content of less. Do not apply to grain sorghum grown for seed. Apply 7 days prior to harvest October 9 Forest Tour (Forest & Grassland Council), Clinton Apply after black layer. Use a minimum of 20 gpa by ground or 5 gpa by air. These field days will also serve as Continuing Education credits for producers that are already certified. For more information about these field days, contact Donna Morgan at or dsmorgan@agcenter.lsu.edu, James Hendrix at or jhendrix@agcenter.lsu.edu, and Ernest Girouard at or egirouard@agcenter.lsu.edu. You may also visit the website at for more information regarding the program and upcoming events.

3 Louisiana Crops Newsletter Page 3 Behind the Scenes LSU AgCenter Research Profile. An essential component of Extension is to communicate the latest in research to the growers and agricultural stakeholders of Louisiana. This is the sixth in a series of research profiles that will be published to give the people of the State a better understanding of the basic and applied research that is being conducted for their benefit. Bobby Golden is an Assistant Professor of Agronomy with emphasis on Soil Fertility at the Red River Research Station. Dr. Golden joined the AgCenter in January 2010 after completing his doctoral degree from the University of Arkansas. His research focus is concentrated on nutrient management in upland cropping systems. Dr. Golden is evaluating (1) Nitrogen stabilizer additives (urease and nitrification) for both urea, and urea ammonium nitrate for use in upland production systems. (2) The potential use of enhanced efficiency fertilizers (polymer-coated urea) in row crop production systems. (3) Micronutrient fertilization with emphasis on zinc source, rate, application timing, and delivery systems for corn production. (4) Correlation of crop response to soil test nutrient levels. As many of you have read in the last few newsletters N is probably the most unstable fertilizer addition in cropping systems with numerous N loss pathways that can occur. The goal of addition of nitrogen stabilizers is to block the transition of one N species to another. Improvements in N uptake and recovery efficiency have been shown with the use of enhanced efficiency products and N stabilizers when properly utilized. Current research is underway to determine the appropriate N source, additive, and application timing to optimize the use of enhanced efficiency fertilizers and N stabilizers in Louisiana agriculture. Many soils in Louisiana have the potential for zinc deficiency to occur. These soils are typically lighter textured, contain little organic matter and have little to no history of zinc fertilization. Zinc deficiency occurs early in the growing season with symptoms showing in newly developed growth, exhibiting a distinct mid-lead streaking and/or intervienal chlorosis. These symptoms are generally accompanied by a shortened internode length. Research is currently underway to address appropriate micronutrient source selection, application timing and rate, as well as delivery systems. Dr. Golden welcomes producers questions and/or concerns about nutrient management and soil fertility and will gladly assist in providing clarity and input with fertilizer selection, and field troubleshooting. Dr. Golden can be reached via at bgolden@agcenter.lsu.edu or by phone ext Caption: Left (0 lb Zn per acre); Right (10 lb Zn peracre as Zinc Sulfate) Caption: Left: foliar injury (2 lb B per R2); Right: (1 lb B per R2)

4 Page 4 Volume 1, Issue 7 Fall Armyworm and Corn Earworm Infesting Louisiana Soybean Jarrod Hardke, Josh Temple, and B. Rogers Leonard LSU AgCenter, Department of Entomology and Macon Ridge Research Station Over the past several weeks, caterpillar pests have been common in soybean fields across the state. The predominant species has been fall armyworm, although corn earworm infestations became more numerous last week in soybean fields. These two pests are often confused in soybean due to the similar color of small larvae. These fall armyworm larvae found on grasses and in soybean fields infested with grasses are typically light or dark green to almost black in overall body color (Figure 1A & 1B). In addition, there are longitudinal light-colored yellowish stripes bordering a darker band along sides of the insect s body. They generally have a tan head capsule which displays a prominent inverted Y. An additional distinguishing characteristic is the presence of four black dots in the shape of a square on the last abdominal segments. Corn earworm (bollworm) larvae DO NOT have an inverted Y on the head capsule. These larvae range in color from yellow-brown to green, have black legs, and generally appear to have more hairs on the body than fall armyworm (Figure 1C & 1D). Figure 1. (A) Light-colored fall armyworm common on grasses; (C) dark-colored fall armyworm on cotton, corn, and grain sorghum; and (B) & (D) corn earworm. The behavior of these insects in soybean fields can also be used to confirm their identity. This particular strain of fall armyworm has been associated with fields that have annual grasses (preferred host) present in row middles and/or around field margins (Figure 2A). The grasses are the preferred hosts so only a limited amount of feeding usually occurs on soybean plants. However, when a herbicide is applied to control the grass problem, these fall armyworm infestations

5 Louisiana Crops Newsletter Page 5 migrate onto adjacent soybean plants where they will feed on foliage (Figure 2B). Figure 2. (A) Soybean field with large grasses present, preferred hosts for the grass strain of fall armyworm; and (B) soybean field with dying grass from herbicide application, forcing fall armyworms to move onto soybeans from the grass. Seedling soybeans are most susceptible, as fewer larvae can cause significant defoliation and plant death (Figure 3A). On plants in later stages of development, very high numbers of larvae are necessary before significant levels of defoliation occur (Figure 3A). It may not be necessary to treat entire fields for this problem, and only spot treatments may be required. This grass strain of fall armyworm occurs across a wide range of hosts (pastures, turf, rice, etc.) and is very susceptible to many insecticides. When considering treatments, low rates of many products are effective. In contrast, late season fall armyworm infestations that typically occur in August and September are labeled as the corn:cotton strain. Although insects from both strains look identical, they are genetically different. Fall armyworm infestations of the corn:cotton strain are more different to control and require the use of selected insecticides at higher rates. Figure 3. (A) Fall armyworm feeding on a soybean seedling; and (B) fall armyworm larva feeding on soybean leaves of an older plant.

6 Page 6 Volume 1, Issue 7 Corn earworms are not likely to be found on weedy grasses in soybean fields. The moths prefer to lay their eggs on flowering stage plants. Larvae are most commonly found in soybeans during the flowering (R1-R2) through early pod development stages (R3-R5). Corn earworm larvae can occur in high numbers when flowers are present and can consume most if not all fruiting structures on a plant. Larger larvae ( 3rd instar) will feed on readily on pods and consume the seed in a pod (Figure 4). It is usually uncommon to see corn earworm infestations occurring during the late pod development stages. However, in areas of limited host plants, fields may be susceptible to infestations during most of the soybean plant s reproductive stages. Sampling soybean fields during the early reproductive stages is critical to find developing infestations and manage them before larvae cause significant injury. Photograph from Scott Akin, University of Arkansas Coop. Ext. Ser Figure 4. Corn earworm injury to soybean pods. Do you have an upcoming event that you d like to publicize in the Louisiana Crops Newsletter? Let us know! Brandi Woolam John Kruse Ronnie Levy Bwoolam@agcenter.lsu.edu Rlevy@agcenter.lsu.edu

7 Louisiana Crops Newsletter Page 7 Where is all my nitrogen going? Part 3: Nitrogen Mineralization John S. Kruse Nitrogen is abundant in the environment, but mostly in forms that are unable to be utilized by crop plants. In fact, of all the most abundant forms of nitrogen - N 2, N 2 O, NO, NH 3, NH 4, NO 3, NO 2, and R-NH 2 only ammonium (NH 4 + ) and nitrate (NO 3 - ) are able to be taken up by the plant in substantial quantities. Of these two forms of N, ammonium is the critical link between stored nitrogen and usable nitrogen. The process by which organic N converts to ammonium is called nitrogen mineralization, and understanding how it works leads to an appreciation for the amazing nature of soils. Soils are a semi-open system in that they allow air, water and nutrients into them and out of them. However, they also have the capacity to store nutrients like a reservoir, and release those nutrients when needed. The two primary ways soils store nitrogen are in soil organic matter and on cation exchange sites. In mature agricultural systems, most soil organic matter started out as crop residues. Crop residues don t just decay and manures don t break down by themselves. They are consumed by bacterial and fungal microbes that want to use the carbon stored in them for energy. As they consume the residues, they also consume the nitrogen stored in the plant matter and manures in fact they need it as an electron receptor. This process takes place over and over again as microbial populations expand, die, repopulate and finally collapse. The material that is left by all this activity is soil organic matter the rich, black and brown material we associate with healthy soil. The nitrogen is locked into organic compounds, some of which can be converted easily and some that are very recalcitrant. Populations of microbes produce enzymes that break down the organic nitrogen into NH4+, which is then held by the soil cation exchange sites. Those exchange sites are located primarily on the soil clays and also on the soil organic matter. As a grower adopts production practices that increase his soil organic matter, he will increase the nutrient holding capacity of the soil, especially nitrogen (Figure 1). Factors that affect soil microbial populations will affect nitrogen mineralization. For instance, mineralization increases with a rise in soil temperature. Soils that are freezing or just above it have very sluggish microbial populations and activity, which is one reason why soils in the upper Midwest and Northern Plains typically have higher soil organic matter content than soils in the southern U.S., which Figure 1. The relationship between the soil cation exchange capacity (CEC) and soil organic matter (SOM). Note that as SOM increases from 1% to 3%, the CEC is rising from 2 to 8 cmol(+)/kg soil, generating a soil that is able to hold more nutrients. (Figure courtesy of hort.wisc.edu)

8 Page 8 Volume 1, Issue 7 in turn have more organic matter than many soils in the tropics. Soil moisture and ph levels also affect microbial populations and will be discussed in the next article on nitrification. Ammonium N can also be consumed by soil microbes in a process called immobilization, and this can have an effect on crop growth. Many crop residues have a high carbon to nitrogen ratio (wheat straw is about 60:1), but most soil microbes need to maintain about a 10:1 ratio. When they consume carbon rich residues, they will also utilize any readily available soil nitrogen to maintain that ratio. The result is a soil suddenly starved of nitrogen. Many growers observe this in the spring on no-till systems or after cotton following wheat. The new crop appears pale yellow and nitrogen deficient because it is! A grower can overcome this temporary deficiency by adding some nitrogen fertilizer at planting. The deficiency is temporary because as the microbial population that consumed the soil nitrogen dies, it releases that N back into the soil for a crop to utilize. Some rare soils contain clays such as vermiculite that can trap NH4+ between the structural layers of the clay particles. When this happens becomes fixed and is rendered unavailable to plants in a process known as ammonium fixation. In summary, ammonium is an environmentally friendly form of nitrogen because it s positive charge ensures that much of it remains on the soil s cation exchange sites rather than leaching away, keeping it available for plants to use. Most row crops are very efficient utilizing the ammonium form of N, requiring less energy to convert to plant nitrogen than nitrate-n. Irrigation Efficiency Utilizing Phaucet Steve Nipper, NRCS Providing irrigation water to crops has been very important this year due to lack of timely rainfall. Conveyance and distribution of this water from the source, such as a well or surface pump, to the field is often accomplished with the use of polypipe, a flexible, plastic conduit. Polypipe is very popular because of its portability in the field and its adaptability to various field configurations. Although it is very effective in conveying and distributing water to a field, often little thought goes into how to efficiently apply the water based on properly sizing the holes or orifices. Many of you may have determined hole sizes by the trial and error method and have been very successful with it. But how successful have you been in guessing at hole sizes when applying water to fields that have different row lengths? In some cases, to water the entire field you may have allowed water to run out of the middles on the short rows for several hours before the water reaches the ends of the longer rows. This will directly result in wasting water resources, increasing fuel costs, limiting traffic access to the field due to excessive soil moisture, as well as other undesirable effects. There is a tool available to help improve the efficiency and effectiveness of distributing irrigation water on fields such as these: PHAUCET! The Pipe Hole and Universal Crown Evaluation Tool, or Phaucet program was designed by NRCS. Phaucet is a design and evaluation tool for furrow irrigation systems. Field and technical information is used to calculate existing system performance and define alternatives for improving irrigation efficiency. This program will assist you in determining the sizes of the holes in the polypipe that will best distribute the available water and improve the timeliness of watering fields having different row lengths. How does Phaucet work? Phaucet uses pipe friction loss, crown profile elevations, and selected hole sizes to calculate pressure throughout the system, and a flow rate for each watered furrow. Furrow flow rates are compared and expressed as a percent of distribution uniformity. This provides an indication of system performance and the effects of system adjustments. Phaucet was developed to provide producers, land grading contractors, and planners a tool for designing efficient fur-

9 Louisiana Crops Newsletter Page 9 row irrigation systems. The design printouts define pipe and hole size combinations that deliver high distribution uniformity at calculated operating pressures. Uniform furrow flow rates normally advance water evenly to the low end of the field. This gives a more consistent water infiltration and reduces pump times. Chemical and nutrient losses due to leaching and surface runoff may be reduced. Pipeline pressure is calculated and displayed for the entire system. This allows planners to make design adjustments that manage pressure and prevent pipe failure. Optimum crown profile grades can be designed for most systems. This gives planners another tool for pipe pressure management. A designed grade often allows less expensive pipe to be used and reduces the number of different hole sizes required for high distribution uniformity. The crown elevation difference calculation helps prevent installation of systems that are erosive and difficult to maintain. What information is needed to begin utilizing Phaucet? An accurate survey (normally 100 ft. stations) of the crown profile where irrigation pipe will be installed. Accurate system flow (gallons per minute). Watered furrow spacing (ft.) Length(s) of irrigated furrows (ft.) Diameter of layflat hole punchers available. Diameter (inches) of irrigation pipe used. Furrow flow rate (gpm) required for soil to be effectively irrigated. Wall thickness (mil) and allowable pressure (ft. of head) of selected layflat pipe. Much of this information you may be able to provide such as gallon per minute flow, watered furrow spacing, length of irrigated furrow, diameter of igration pipe and wall thickness. With today s technology you may be able to provide elevation survey and if the fields have been recently land leveling you may have that information. Who can assist you to utilize the Phaucet program? NRCS field office can provide technical assistance to you concerning this program helping you become familiar with the program. You may say it is late July early August and I have already laid all the irrigation pipe I want to this year, why do I need to utilize this program now? The answer is no you do not need to utilize the program for the 2010 crop but what about 2011 crops. After harvest is completed and before field work begins in the spring would be a great time to become familiar with Phaucet. This may help you in the future determing what size holes are needed, utilizing the water more efficiency thus hoping to make additional dollars. If you are interested in NRCS helping you with this program please your local NRCS Field Office to discuss this program and how the program may assist you with the irrigation needs in the future.

10 Page 10 Volume 1, Issue 7 Wheat Production Guidelines for Ed Twidwell & Steve Harrison LSU School of Plant Environmental & Soil Sciences Data from the LSU AgCenter wheat and oat performance trials has been posted at: This information should be used by growers to help choose varieties for planting this fall. In August the Wheat Research Summary publication will be placed on the LSU AgCenter website at the following address: Wheat prices have surged recently and seed production was limited by planting conditions last fall, resulting in increased demand and short supply of wheat seed for planting this fall. Growers should consider booking wheat seed quickly in order to have access to the better varieties this fall. To spread out their risks, growers should look at the twoyear data tables and select several different wheat varieties to plant this fall. It is not a good idea to plant all of their acreage to one single variety. Yield is the most obvious consideration in choosing varieties, but other factors also influence profitability: costs and decreases yield and test weight. Recommended planting dates for wheat range from October 15 to November 15 in north Louisiana and from November 1 to November 30 in central and south Louisiana. Planting wheat earlier than the recommended planting dates will subject the plants to greater insect and disease pressure and also makes the plants more prone to winter injury due to excessive fall growth. Wheat can be planted later (two weeks past the recommended window) but this increases the probability of stand loss and reduced tillering due to wet weather and shortened growing season. Seeding rates should be increased when planting late and into cold wet soil. Disease susceptibility a single $20 fungicide application is equal to about four bushels in yield. Stripe rust and leaf rust susceptible varieties frequently require fungicides in Louisiana. Insect resistance Hessian Fly has been a problem in certain areas in recent years. Hessian Fly resistance data is shown in tables 27 and 28 of the 2009 performance report. Hessian Fly was not an issue in Louisiana last year so there may not be data available for the newest varieties. Test weight a low test weight can result in dockage at the elevator. Test weight is influenced by weather conditions following grain dry down and prompt harvest is important. Test weight is strongly influenced by genetics such that varieties with low average test weights in the data tables are likely to have low test weight in most environments. 4. Lodging resistance lodging increases harvest Planting wheat with a grain drill is the preferred method because it allows uniform depth of planting and results in a more uniform stand. A seeding rate of 60 to 75 pounds per acre of high quality seed planted into a good seedbed with adequate moisture is satisfactory for drilling. Adjust the seeding rate up from 75 to 120 pounds per acre for broadcast planting, late planting, or planting into a poorly prepared seedbed. Fall fertilization and liming should be carried out to supply any needs indicated by soil testing. Phosphorus and potassium, where recommended, should be incorporated into the seedbed before planting. If lime is recommended, apply before seedbed preparation if possible. Fall application of nitrogen is usually not needed where wheat follows soybeans. Where wheat follows corn, sorghum or rice, application of 15 to 20 pounds of nitrogen per acre may be beneficial.

11 Louisiana Crops Newsletter Page 11 Events To Remember Dean Lee Research Station Field Day August 5, 2010 Sweet potato Field Day August 24, 2010 Statewide Wheat and Feedgrain Referendum August 26, 2010 Are There Errors in the Louisiana Crops Newsletter? Would you like to receive our Newsletter? Let us know! Contact Brandi Woolam John Kruse Ronnie Levy Susceptibility of Louisiana Bollworm to Pyrethroids Joshua Temple, Steve Micinski, and Rogers Leonard KEY POINTS: Bollworm (corn earworm) pressure in LA crops is higher than that in previous years. Bollworm survival to the pyrethroid, cypermethrin, during 2010 is the highest on record. High pressure and pyrethroid tolerance could lead to field control problems. Over the past few weeks, populations of bollworm (corn earworm) have increased in many Louisiana cotton and soybean fields. The July moth trap captures from around the state are higher than that observed in previous years. These populations are the result of the generations that developed in Louisiana corn fields, but also migrated into the state from Texas. Adult vial tests (AVT) have been used in Louisiana since 1988 to monitor bollworm susceptibility to pyrethroid insecticides. Survival of bollworm moths to discriminating doses of cypermethrin (5 and 10 µg per vial) has been 55 and 35%, respectively, for July (Figures 1 and 2). This represents a 10% increase in survivorship to both doses compared to the same time period in This also represents the first time that survival has been measured above 50% for a monthly summary since testing was initiated during the mid-1980 s. Bollworm tolerance to pyrethroids and high pressure within fields could lead to control problems in fields treated with a pyrethroid insecticide alone.

12 Page 12 Volume 1, Issue 7 Pyrethroid insecticides should not be used alone at this time when bollworms are the target pest of an insecticide application. When attempting to control this pest in cotton and soybeans, pyrethroids should be co-applied with Orthene (acephate) or other OP s to provide an additional mode of action and reduce the probability of field control failures. Fig. 1. Historical Bollworm Survival-July (5 µg/vial) 60 Percent Survival Fig. 2 Historical Bollworm Survival-July (10 µg/vial) Percent Survival

13 Newsletter Louisiana Title Crops Newsletter Page 13 Parish County Agent Phone Acadia Barrett Courville Allen Randall Bellon Avoyelles Rob Ferguson Beauregard Keith Hawkins Bossier Caddo John Levasseur Calcasieu Tommy Shields Caldwell Jim McCann Cameron Tommy Shields Catahoula Glenn Daniels Concordia Glenn Daniels Desoto East Carroll Donna Lee Evangeline Keith Fontenot Franklin Carol Pinnell-Alison Grant Matt Martin Iberia Blair Hebert Iberville Kellee Lassiter Jeff Davis Allen Hogan Lafayette Stan Dutile LaSalle Jim Summers Madison R.L. Frasier Morehouse Terry Erwin Natchitoches P A R I S H CONTA C T S INFORMAT I O N Ouachita Richard Letlow RLetlow@agcenter.lsu.edu Pointe Coupee Miles Brashier MBrashier@agcenter.lsu.edu Rapides Matt Martin MMartin@agcenter.lsu.edu Red River Joshua Salley JSalley@agcenter.lsu.edu Richland Keith Collins KCollins@agcenter.lsu.edu St. Charles Rene Schmit rschmit@agcenter.lsu.edu St. Landry Vincent Deshotel VDeshotel@agctr.lsu.edu St. Martin Alfred Guidry aguidry@agcenter.lsu.edu St. Mary Jimmy Flanagan jflanagan@agcenter.lsu.edu Tensas Dennis Burns DBurns@agcenter.lsu.edu Vermilion Stuart Gauthier sgauthier@agcenter.lsu.edu Washington Henry Harrison hharrison@agcenter.lsu.edu West Baton Rouge Louis Lirette llirette@agcenter.lsu.edu West Carroll Myrl Sistrunk MSistrunk@agcenter.lsu.edu West Feliciana James Devillier jdevillier@agcenter.lsu.edu

14 Specialists Specialty Responsibilities Name Phone Soybean Soybeans Ron Levy (cell) Cotton and Feed Grains Cotton, Corn, Sorghum John Kruse (cell) Weeds Corn, Grain Sorghum, Bill Williams (cell) Cotton. Soybeans Weeds Corn, Grain Sorghum, Daniel Stephenson (cell) Cotton weed control. Soybeans Entomology Cotton, Corn, Soybean, Rogers Leonard Grain Sorghum (cell) Entomology Soybean, Corn, Grain Sorghum Jack Baldwin Nematodes All agronomic crops Charlie Overstreet Pathology Soybean, Corn, grain Sorghum Boyd Padgett (cell) Pathology Soybean, Corn, grain Sorghum Clayton Hollier Economics Ag Economics and Agribusiness Cotton Soybean and Feed Grain marketing Kurt Guidry Ken Paxton Kurt Guidry Fertility All agronomic crops J Stevens (cell) jstevens@agcenter.lsu.edu Louisiana Crops Newsletter created and distributed By: Dr. Ronnie Levy Dr. John Kruse Brandi Woolam Dean lee Research Station 8105 Tom Bowman Drive Alexandria, LA Phone: Fax: We re on the Web. Louisiana State University Center Agricultural Center, William B Richardson, Chancellor Louisiana Agricultural Experiment Station, David J. Boethel, Vice-Chancellor and Director Louisiana Cooperative Extension Service, Paul D Coreil, Vice Chancellor and Director Issued in furtherance of the Cooperative Extension work, Acts of Congress of May 8 and June 30, 1914, in cooperation with the United States Department of Agriculture. The Louisiana Cooperative Extension Service provides equal opportunities in programs and employment