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Volume 4 , Issue 1 January 2014
Ins ide th is issue:
Louisiana Soybean Association
Annual Meeting
1
Cotton Varieties Plant-ed, Louisiana, 2013
3
SOYBEAN VARIETY
SELECTION for 2014 4
Section 18 for Aphid Control in Grain Sorghum
5
Corn Disease Man-agement Considera-tions for 2014
5
Louisiana Ag Industries As-
sociation, Convention 12
Upcoming Calendar 13
Contact Information 14
LOUISIAN A CROPS NEWSLETTER
Cotton, Corn, Soybeans, Sorghum,
and Wheat
Issue Contr ibutors
Dr. Ronnie Levy
Dr. Boyd Padgett
Dr. David Kerns
Sebe Brown
Clayton Hollier
Trey Price
Dan Fromme
Louisiana Soybean Association
Annual Meeting
Wednesday, January 22, 2014
Dewitt Livestock Facility
Dean Lee Research Station
Alexandria, Louisiana
11:50 Registration and LSA Membership Drive*
12:00 Welcome
Dr. Boyd Pagett, Professor and Central Region Director
12:10 Lunch – Sponsored by LA Soybean and Grain Research and Promotion Board
12:40 LSA Business Meeting
Damian Glaser, LSA President Presiding
Call to order and minute approval
Membership/Treasury Report – Dr. Ron Levy
Soybean Market Outlook and Dreyfus Update – David Bollich
LA Farm Bureau Legislative Report – Kyle McCann
Election of New Officers for 2014 Calendar Year
New business
* Membership costs are $55/year or $155 for three year memberships. To increase its
representation on the national level, the LSA is seeking new members to be a part of their organization. By purchasing a three year membership to the LSA for $155.00 the new or
renewing member will receive credit for four bags of seed at their respective seed dealer-ship. After paying for a three year membership and purchasing your seed as you normally
do, send in a copy of the receipt and where you purchased your seed back to LSA by June 30th, 2014. Your account at that seed dealership that you choose will then be credited for
four bags by the respective seed representative. The seed companies participating in the LSA membership drive are: Delta Pine/Asgrow Seed Brands, Croplan Genetics, Delta Grow,
NK/Syngenta Seed, NC+, Pioneer and Progeny Ag Products.
Page 2 Volume 4 , Issue 1 January 2014
Louisiana Soybean Association Membership Application
Name: ___________________________________________
Farm Name: ______________________________________ (optional)
Address: _________________________________________
City, State, Zip: ____________________________________
Email Address: ____________________________________
Telephone No. ____________________________________
* Membership costs are $55/year or $155 for three year memberships. To increase its representation on the national level, the LSA is
seeking new members to be a part of their organization. By purchasing a three year membership to the LSA for $155.00 the new or renew-
ing member will receive credit for four bags of seed at their respective seed dealership. After paying for a three year membership and pur-
chasing your seed as you normally do, send a copy of the receipt and where you purchased your seed back to LSA by June 30 th, 2013. Your
account at that seed dealership that you choose will then be credited for four bags by the respective seed representative. The seed compa-
nies participating in the LSA membership drive are: Delta Pine/Asgrow Seed Brands, Croplan Genetics, Delta Grow, NK/Syngenta Seed,
NC+, Pioneer and Progeny Ag Products.
Mail Membership Application and check payable to Louisiana Soybean Association to:
Louisiana Soybean Association
8105 Tom Bowman Dr.
Alexandria, LA 71302
Cotton Varieties Planted, Louisiana, 2013 Crop
Listed below are the top ten cotton varieties planted in Louisiana during the 2013 season. Estimates of the percentages of the various
varieties planted in Louisiana were based on informal surveys made by the cotton classing office. Those surveyed included ginners, seed
dealers, extension agents, and other knowledgeable sources.
Source: USDA –AMS-Cotton Program
2013 Louisiana Cotton Acres and Yields
Cotton acres dropped to 125,000 acres which is the lowest totals on record. However, lint yield is expected to set a state record 1,248
pounds per acre. In 2012, cotton acres were at 225,095 acres and lint yield was 1,020 pounds per acre which was a state record until
this year.
Cotton Fiber Quality, Louisiana, 2013 Crop
Fiber quality for the 2013 Louisiana cotton crop can be classified as having high micronaire, average fiber length and good uniformity.
Fiber strength was good to excellent. The most glaring issue was that around 58.7% of bales that were classified produced a micronaire
value of 5.0 or higher.
Source: USDA-AMS
Variety Louisiana (%)
ST 5288B2F 32.78
PHY 499WRF 32.22
DP 1133B2RF 22.25
DP 0912B2RF 7.47
DP 1048B2RF 1.18
DP 1044B2RF 1.06
ST 4946GLB2 0.92
PHY 375WRF 0.64
DP 1359B2RF 0.33
DP 1311B2RF 0.23
Year Micronaire Length Uniformity Strength
2013 5.0 1.11 81.8 30.6
2012 4.8 1.11 81.1 29.3
Louis iana Crops Newsletter Page 4
SOYBEAN VARIETY SELECTION for 2014
Making the proper variety selection is critical to maximize profit potential. Variety selection may be the single most important decision you
make. No two farms are alike. There are differences in production practices, soil types and climatic conditions just to name a few. You
should plan to plant more than one variety. This will help reduce the risk associated with these conditions and weather. For these reasons,
it is important to gather as much data as possible before deciding which varieties to plant.
Begin with data from your area and of similar production conditions, this should include Commercial Variety Trials from Research Stations,
Extension demonstrations and/or company trials. If you are unable to find information that matches your production, look for varieties that
consistently out perform others when averaged across locations. A proven variety is one that performs well in a wide range of conditions,
soil types, and locations.
LOUISIANA – “SELECTS”
Louisiana – “Selects” is a listing of top performing soybean varieties in Louisiana. It was based on Commercial Variety Trials and Extension
Demonstrations.
2014 Louisiana – “Selects” Soybean MG3 - Early MG4
Armor 44-R08
Dyna-Gro 39RY43
R2C 4541
Myc5N431
P4313RY
Soybean Late MG4
REV 47R34 Armor 48-R66
AG 4934 R2C 4772
REV 49R94 P49T80R
Morsoy Xtra R2 48X02 AG 4933
Dyna-Gro S48RS53 AG 4531
P4747RY Halo 4:95
DG4825RR2/STS Armor 49-R56
P4900RY AGS 47R212
Armor 47-R13
Soybean MG5
AG 5332 REV 51R53
P54T94R AG 5233
Armor X1312 DG5575RR2
DGS53RY84 P50T64R
P5555RY DG5575RR2
P55T57R REV 56R63
DG 5481 LL AG 5533
P5213RY P5711RY
P5210RY Schillinger 5220.RC
There are many sources of information that can be accessed to view variety performance. Contact your local Extension office or the LSU
AgCenter website at www.lsuagcenter.com
Page 5 Volume 4 , Issue 1 January 2014
Information Requested to Aid in Obtaining a Section 18 Emergency Exemption for Trans-
form (sulfoxaflor) for Sugarcane Aphid Control in Grain Sorghum
Sebe Brown and David Kerns: LSU AgCenter Entomologists
The 2013 grain sorghum production season was very generous year for many farms around Louisiana with excellent harvest weather and high yields; however, many producers became familiar with the white sugarcane aphid, an insect pest that has the potential to se-verely reduce yield and harvest efficiency. The white sugarcane aphid emerged as a wide spread pest late in the production season when many producers had suspended routine insect scouting in anticipation of harvest. Fields at harvest maturity were often complete-ly covered in honey dew, a sticky substance that aphids excrete as a byproduct of feeding, which clogged internal components causing mechanical failure and combine stoppage. Adding to this issue, many products used for crop desiccation were unable to reach the leaf surface due to the layer of honey dew covering green foliage. Later planted sorghum afflicted with this insect saw significant yield loss and some cases total crop loss after field colonization. Compounding this matter is the lack of effective insecticides currently labeled for use on aphids in grain sorghum and the extended pre-harvest intervals these insecticides require (28 to 60 days depending on insecti-cide and amount used per acre).
Therefore, we are in need of producer/consultant input on how the white sugarcane aphid negatively affected production around Louisi-ana. This information will be used to justify a Section 18 emergency exemption for Transform (sulfoxaflor) for the 2014 grain sorghum production season. Sulfoxaflor demonstrated excellent efficacy against white sugarcane aphid in research and on-farm trials around Louisiana and will provide a much needed tool for producers to combat this pest. If you experienced issues with the white sugarcane aphid in your fields last year please take the time to fill out the questionnaire below. Any information provided will benefi t a Section 18 justification with specific information on economic losses due to yield reduction and combine efficacy a plus. Questionnaires should be
returned to David Kerns at the information below as soon as possible, thank you for your time and consideration.
Measured yield reduction (bu/ac or % reduction)
Combined impact from:
Injury inflicted by aphid to plant
Grain loss out the back of combine due to clogged screens etc.
Qualitative injury
Dockage or discounts at the elevator that can be attributed to the aphid
Problems with delayed harvest or grain moisture due to inability to properly desiccate the crop
Problems with crop desiccation due to honey dew and mold on leaves and associated economic costs
Requiring additional applications (include application cost)
Harvest efficiency issues
Slower travel speed during harvest
Please include normal harvest speed versus speed with when aphids are present (estimated as # acres harvested per hour)
Mechanical issues associated with combine stoppage (Purchase of new parts; time spent, cleaning equipment and re-placing parts)
Problems controlling aphids with currently labeled insecticides
Lack of efficacy
Pest resurgence
PHI preventing use when needed
List of issues encountered at harvest
Please contact me if you have questions; and mail, FAX or email information to:
David Kerns
LSU AgCenter
Macon Ridge Research Station
Winnsboro, LA 71295
Cell: 318-439-4844
FAX: 318-435-2133
Email: [email protected]
Louis iana Crops Newsletter Page 6
Corn Disease Management Considerations for 2014
Trey Price, Field Crops Pathologist, Macon Ridge Research Station
Clayton Hollier, Professor, Department of Plant Pathology, Louisiana State University
Boyd Padgett, Professor, Dean Lee Research and Extension Center
The most common diseases that occur in Louisiana corn are common rust, southern rust, and northern
corn leaf blight. Less common diseases include smut, ear and stalk rots, gray leaf spot, and southern
corn leaf blight. Corn diseases are usually of minor importance if they occur late in the season. Howev-
er, if diseases are detected prior to tasseling, there are several things to consider. Disease identification
is very important because management decisions will vary with different pathogens. If disease inci-
dence and severity are high enough and environmental conditions are favorable for further disease de-
velopment, a fungicide application should be considered. The stage of the corn crop must be considered
as well; progression to yield limiting levels rarely occurs when diseases initiate late in the growing sea-
son. Corn plants can tolerate significant amounts of defoliation depending on growth stage (Table 1).
Scouting fields prior to tasseling is important for diseases initiating early in the season.
When it is determined a fungicide application is needed, a premix having two modes of action (strobilurin
and triazole) offers a broad spectrum of activity. Examples of premix products include: Headline AMP,
Stratego YLD, Quilt, Quilt Xcel, Priaxor, among others. Label specifications for application methods, tim-
ings, and rates should be followed. In most cases, a single application at tasseling is justified when dis-
ease is present and active. The decision to apply a fungicide should be made on a field by field basis.
Do not make unnecessary applications. Based on 8 years of data generated from field trials at LSU
AgCenter research stations, fungicide applications to corn in the absence of disease DO NOT consistent-
ly result in increased yields. Making unnecessary applications wastes money, shortens the lifespan of
fungicides, and increases the chances of developing resistant pathogens.
Table 1. Estimated % corn grain yield loss due to defoliation at various growth stages.
% Defoliation
Growth Stage 10 20 30 40 50 60 70 80 90 100
Tassel 3 7 13 21 31 42 55 68 83 100
Silked 3 7 12 20 29 39 51 65 80 97
Silks Brown 2 6 11 18 27 36 47 60 74 90
Pre-Blister 2 5 10 16 24 32 43 54 66 81
Blister 2 5 10 16 22 30 39 50 60 73
Early Milk 2 4 8 14 20 28 36 45 55 66
Milk 1 3 7 12 18 24 32 41 49 59
Late Milk 1 3 6 10 15 21 28 35 42 50
Soft Dough 1 2 4 8 12 17 23 29 35 41
Early Dent 0 1 2 5 9 13 18 23 27 32
Dent 0 0 2 4 7 10 14 17 20 23
Late Dent 0 0 1 3 5 7 9 11 13 15
Nearly Mature 0 0 0 0 1 3 5 6 7 8
Adapted from the National Crop Insurance Service’s ‘Corn Loss Instruction’ to represent the leaf collar
growth staging method. Included in the Mississippi State University, Grain Crops Update June 4, 2010,
Corn Disease Identification and Development
Common Rust Figure 1. Common rust. Spore brick red.
Common rust usually can be found every year in Louisiana, and is usually the first disease observed dur-
ing the growing season (Figure 1). This disease is caused by the fungus Puccinia sorghi. Initial infections
occur from wind-blown spores from corn-producing areas in tropical and sub-tropical regions of the world.
Signs of this disease can be present early in the growing season (prior to tasseling) during periods of high
relative humidity (>6hr dew period). Sporulation on the leaf surface can occur within 7 days after infec-
tion. Pustules are elongated, ragged looking and occur on the upper and lower leaf surfaces. Spores with
pustules are cinnamon-brown in color. In some cases, pustules occur in bands because of infections that
occurred while the leaf was in the whorl. Disease severity will subside when temperatures exceed the
range of 60 to 77oF. This disease usually does not cause yield loss in Louisiana corn.
Figure 2. Southern rust. Spores orange.
Southern rust, caused by the fungus Puccinia polysora, also may be present in Louisiana corn (Figure 2).
Similar to common rust, initial infections are caused by wind-blown spores. Southern rust produces small
circular to oval pustules and contain orange to light brown spores. The spores are lighter in color when
compared to spores associated with common rust. Pustule size is usually smaller and less ragged looking
than those produced by the common rust pathogen. Pustules are more abundant on the upper leaf sur-
face and can also be found on the leaf sheath when disease is severe. This is a warmer-season rust com-
pared to common rust (80-90°F) and usually occurs late season and does not have adequate time to im-
pact yield. However, this rust is very aggressive and if disease epidemics initiate early during periods of
high humidity or rainfall (prior to or at tasseling), yields may be reduced.
Figure 3. Northern Corn Leaf Blight
Northern corn leaf blight is caused by the fungus Exserohilum turcicum (Figure 3). The disease may be
found in Louisiana corn fields during mid-season (tasseling/flowering) and, in some cases, may cause
yield loss. Lesions of Northern corn leaf blight usually begin in the lower canopy and progress upward.
Lesions begin as small elliptical or spindle shaped lesions. Mature lesions can be six inches in length
and about ½ to 1 inch wide. The lesions are grayish green in color. Conditions favorable for disease de-
velopment are 60 to 90°F with moisture periods of 6 to 18h. The fungus can survive on infected corn de-
bris left on the soil surface from the previous growing season. Therefore, the risk to this disease increas-
es in fields where reduced-tillage practices are used and corn is planted continuously. Corn debris from
the previous season provides inoculum for disease initiation and establishment. Spores produced on this
debris are disseminated by wind and rain splash infecting the current crop. Subsequent infection results
from spores produced within lesions on the current crop. There are several races of this pathogen. There-
fore, the effectiveness of genetic resistance may vary depending on the races present in a particular
field.
Less Common Disease and Abnormalities
Goss’s Wilt Figure 4. Leaf lesions caused by Goss’s wilt.
Goss’s Wilt Figure 5. Leaf lesions
caused by Goss’s wilt.
Goss’s wilt is a disease caused by the bacterium, Clavibacter mich-
iganensis subsp. nebraskensis Figures 4 & 5). This disease was
first discovered in Louisiana (East Carroll, West Carroll, Madison,
and Tensas) in 2013. This disease reduces vigor, stand, stalk
quality, grain quality, and yield. The systemic wilt phase (stalk in-
fection) is less common with diagnostic orange/brown discolora-
tion of vascular bundles. Foliar infections are more common with
water soaking (gray/green) resulting in lesions that follow the leaf
veins. Bacterial ooze may be evident when wet and shiny when
leaves are dry. Infection can occur at any stage of development
(earlier infections cause the most damage). Bacteria primarily en-
ter through wounds caused by wind, hail, and equipment. Seed
transmission occurs to seedlings ~2% of the time (important in
moving pathogen to new areas). Conditions favorable for disease
development are temperatures around 80°F with extended periods of leaf wetness and high relative humidity. Bacteria overwinter in
infested corn residue so areas with corn following corn and mini-
mum tillage may harbor the pathogen. Alternative hosts include
green foxtail, shattercane, and barnyardgrass. Crop rotation and
increased tillage will reduce residue/primary inoculum. Sanitary
measures must be taken with equipment to avoid spread. The
best way to manage this disease is with resistant hybrids.
Gray Leaf Spot
Gray leaf spot is caused by the fungus
Cercospora zeae-maydis. Initial le-
sions are rectangular, small, necrotic,
with yellow halos. As lesions mature,
they expand and turn gray where the
fungus may sporulate on the under-
side of the leaf. Conditions favoring
development are temperatures rang-
ing from 70 to 85oF with repeated
moisture over 11 or more hours or
high relative humidity (95% or more).
The fungus can overwinter on infected
corn debris from the previous season.
Therefore, risk to disease is increased
when corn is continuously cropped
and reduced tillage allows debris to
overwinter.
Smut
This disease is caused by the fungus
Ustilago madis and is generally not
thought to impact yield. Symptoms can
occur on foliage and ears and are very
evident. Individual kernels enlarge and
are silvery gray in color. Diseased ker-
nels can be cut in half to reveal black
sooty spores. This disease is usually
present at very low levels in every corn
field, and is most severe when actively
growing tissue of young corn is wound-
ed. The fungus overwinters on infected
corn debris from the previous growing
season or in the soil (for many years).
The fungus is not seedborne, as is the
case with some smuts in other crops.
Purple leaf sheath
Each year this abnormality can be found in some corn fields within the state. While fungi and bacteria
are associated with this condition, this is not harmful to the plant. The purple discoloration on the stalk
and leaf sheath results from colonized (fungi and bacteria) pollen that is lodged between the sheath and
stalk.
Louisiana Ag Industries Association, Inc. Annual Convention
The Louisiana Ag Industries Association will once again hold its annual meeting on February 5-6, 2013 in
Marksville, Louisiana. This is the sixth consecutive year that the convention will be held at the Paragon
Casino and Resort, located in the central part of Louisiana. Representatives from the seed, chemical, fer-
tilizer, grain, and feed industries will hear presentations on world fertilizer markets, industry updates,
weather patterns for 2014, congressional updates, as well as other timely, market-driven information that
affects not only Louisiana industries, but processors, and producers as well. The format will include two
half – day business sessions, beginning at 8:30am on January 28th, followed by a luncheon. A skeet
shoot and golf tournament will also be held that afternoon for those wanting to participate. The meeting
will conclude at noon on Wednesday, January 29th.
Registration will be $125 for current members and $175 for non-members. All agricultural industry, uni-
versity, state and federal agency, and crop consultants are encouraged and invited to attend. Please con-
tact Donna Morgan at [email protected] or 318-229-9955 for more information.
Louis iana Crops Newsletter Page 13
Upcoming Calendar of Events
January 22, 2014 - Louisiana Soybean Association
Annual Meeting, Dewitt Livestock Facility,Dean Lee Research Station
Alexandria, Louisiana
Louisiana Ag Industries Association annual meeting on February 5-6, 2013 in Marksville, Louisiana.
February 12-14, 2014 - Louisiana Agricultural Technology and Management Conference sponsored by the Louisiana Agricultural Consultants Association, Paragon Casino and Resort Hotel, Marksville,
Louisiana
For additional calendar information on LSU AgCenter Parish and Statewide events, visit our
website at www.lsuagcenter.com/calendar
Page 8 Volume 4 , Issue 1 January 2014
P AR I S H CO N TAC T IN F O R M AT I O N
Parish County Agent Phone Email Acadia Barrett Courville 337-788-8821 [email protected]
Allen Randall Bellon 337-639-4376 [email protected]
Ascension Al Orgeron 225-562-2320 [email protected]
Avoyelles Vincent Deshotel 337-831-1635 [email protected]
Beauregard Keith Hawkins 337-463-7006 [email protected]
Bossier Ricky Kilpatrick 318-965-2326 [email protected]
Caddo John Terrell 318-226-6805 [email protected]
Calcasieu James Meaux 337-475-8812 [email protected]
Caldwell Jim McCann 318-649-2663 [email protected]
Cameron James Meaux 337-475-8812 [email protected]
Catahoula Josh Price 318-744-5442 [email protected]
Concordia Sara Nuss 318-336-5315 [email protected]
Concordia Sebe Brown 318-498-1283 [email protected]
Desoto Chuck Griffin 318-872-0533 [email protected]
East Carroll Donna Lee 318-282-1292 [email protected]
Evangeline Keith Fontenot 337-363-5646 [email protected]
Franklin Carol Pinnell-Alison 318-267-6713 [email protected]
Grant Donna Morgan 318-627-3675 [email protected]
Iberia Blair Hebert 337-369-4441 [email protected]
Jeff Davis Frances Guidry 337-824-1773 [email protected]
Lafayette Stan Dutile 337-291-7090 [email protected]
LaSalle Donna Morgan 318-992-2205 [email protected]
Madison R.L. Frasier 318-267-6714 [email protected]
Morehouse Terry Erwin 318-282-3615 [email protected]
Natchitoches Stephen Roberts 318-332-7274 [email protected]
Ouachita Richard Letlow 318-282-2181 [email protected]
Pointe Coupee Miles Brashier 225-281-9469 [email protected]
Rapides Donna Morgan 318-473-6605 [email protected]
Red River Robert Berry 318-932-4342 [email protected]
Richland Keith Collins 318-355-0703 [email protected]
St. Charles Rene’ Schmit 985-785-4473 [email protected]
St. John Mariah Bock 985-497-3261 [email protected]
St. Landry Vincent Deshotel 337-831-1635 [email protected]
St. Martin Stuart Gauthier 337-332-2181 [email protected]
St. Mary Jimmy Flanagan 337-828-4100 [email protected]
Tensas Dennis Burns 318-267-6709 [email protected]
Vermilion Andrew Granger 337-898-4335 [email protected]
West Baton Rouge Stephen Borel 225-281-9474 [email protected]
West Carroll Bruce Garner 318-331-9481 [email protected]
West Feliciana Andre’ Brock 225-635-3614 [email protected]
Page 9 Louis iana Crops Newsletter
Specialists
Specialty Responsibilities Name Phone Email
Soybean Soybeans Ron Levy 318-542-8857 (cell) [email protected]
Cotton , Corn Cotton, Corn Dan Fromme 318-880-8079 (cell) [email protected]
Weeds Corn, Grain Sorghum, Cotton. Soybeans
Daniel Stephenson 318-308-7225 (cell) [email protected]
Asst. Integrated Pest Management, Northeast
Cotton, Corn, Soybean, Grain Sorghum
Sebe Brown 318-498-1283 [email protected]
Entomology Cotton, Corn, Soybean, Grain Sorghum
David Kerns 806-438-6672 (cell) [email protected]
Nematodes All agronomic crops Charlie Overstreet 225-578-2186 [email protected]
Pathology Soybean, Corn, Grain Sorghum
Trey Price 318-2359805(cell) [email protected]
Pathology Soybean, Corn, Grain Sorghum
Clayton Hollier 225-578-1464 [email protected]
Economics Cotton Kurt Guidry 225-578-3282 [email protected]
Ag Economics and
Agribusiness
Soybean and Feed Grain
marketing Kurt Guidry 225-578-3282 [email protected]
Fertility All agronomic crops J. Stevens 318-308-0754 (cell) [email protected]
Louisiana Crops Newsletter created and distributed by:
Dr. Ronnie Levy
Dean Lee Research Station
8105 Tom Bowman Drive
Alexandria, LA 71302
Phone: 318-473-6522
Fax:318-473-6503
We’re on the Web. www.lsuagcenter.com/en/crops_livestock/crops
http://louisianacrops.com
Louisiana State University Center Agricultural Center, William B Richardson, LSU Vice President for Agriculture
Louisiana State University Agricultural Center
Louisiana Agricultural Experiment Station
Louisiana Cooperative Extension Service
LSU College of Agriculture
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