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May 2004

(31 May)

Water, water everywhere isn't good for corn crop

Purdue/Ohio State AgAnswers

(31 May)

Amine or Ester, Who’s Better

Glenn Nice, Bill Johnson, and Tom Bauman. Purdue Univ.

(31 May)

Ohio C.O.R.N. Newsletter

The Ohio State Univ.

• Insect Update in Corn
• Denitrification of Applied Nitrogen and Sidedressing Considerations
• Yellow Corn, Should I Be Concerned?
• Flooding & Ponding Impacts On Corn Stands
• Hail Injury To Corn Should Be Limited
• Seedcorn Maggots in Corn & Soybeans
• Slug Activity
• Soybean Aphid Update
• Fungicide Applications On Wheat: Timing Restrictions
• Wheat Scab Risk High In North Central Ohio
• Armyworms in Wheat
• Potato Leafhopper in Alfalfa
• A Few Weed Management Items
• What Is That Tall, Stinking, White - Flowering Weed?

(31 May)

Nebraska Crop Watch Newsletter

Univ. of Nebraska.

• Don't switch corn hybrids yet
• Panhandle wheat dry, entering grain fill
• Assessing post-storm soybean stands
• Crop replanting options after herbicide applications
• Table of herbicide replanting options
• Cool, wet weather may faciliate soybean disease
• Soybean aphid 101
• Northeast Nebraska insect update
• Estimating common stalk borer development
• Raise cutting height when alfalfa first harvest is delayed
• Using hay preservatives

(31 May)

Michigan Field Crop Team Advisory Alert

Michigan State Univ.

• Managing corn and soybean fields submerged by recent heavy rains
• Aphanomyces on alfalfa
• An evaluation of annual crops planted for emergency forage
• Corn contracted for fall delivery but not yet planted
• Other articles to consider during heavy rains
• Excessive rain and soil-applied corn herbicides
• Herbicide considerations when replanting flooded corn
• Postemergence herbicide application to large corn and weeds
• MSU Weed Tour postponed
• Nitrogen losses due to excessive rainfall
• Exercise restraint in resuming field operations
• Rill and gully erosion increases risk of tractor rollovers
• Update on wheat scab in Michigan and using the prediction models
• Impact of the current weather situation on field crops insects

(31 May)

Iowa Integrated Crop Management Newsletter

Iowa State Univ.

• Hail injury to corn and soybean
• Corn replant decisions in 2004
• Soybean replant decisions in 2004
• Wheat scab prediction model available to growers
• Update to delayed herbicide options for emerged corn
• Wet weather, stressed corn, and herbicide applications
• Weed control options in late corn

(31 May)

the Bulletin:
Pest mgmt & crop developmt information for Illinois

Univ. of Illinois

• Field Observations on Soybean Aphids in Northern Illinois
• Armyworms Are Making Their Presence Known in Some Areas
• Grape Colaspis Larvae May Be Causing Some Injury to Corn
• Will European Corn Borer Reemerge as a Prominent Insect Pest in 2004?
• Monitoring for European Corn Borer
• Slugs in No-Till, Part II
• Pokeweed Biology and Control in Corn and Soybean
• Crop Growth Charges Ahead
• Predicting and Measuring Nitrogen Loss

(31 May)

Continued Volatility For Corn And Soybean Prices

Darrell Good, Univ. of Illinois

(21 May)

Pesticide spray drift isn't good to the last droplet

Purdue/Ohio State AgAnswers

(21 May)

Diagnostic workshops root out crop-ruining problems

Purdue/Ohio State AgAnswers

(21 May)

Get The Most Out Of Your Total Post Program

Bob Hartzler, Iowa State Univ.

(21 May)

Nebraska Crop Watch Newsletter

Univ. of Nebraska.

• Careful assessment urged for freeze-damaged stands
• Choosing the right postemergence herbicide
• Table of postemergence herbicides
• Managing early season spider mites
• Prepare to scout corn for stalk borer
• Adjust pasture management for available moisture
• Boost summer pasture yields with spring nitrogen applications

(20 May)

Purdue Pest & Crop Newsletter

Purdue Univ.

• Critters Near Damaged Seedlings
• Soybean Aphid Update
• European Corn Borer Moths Flying
• Postemergence Grass Control in Corn
• Use Thermal Time to Predict Leaf Stage Development in Corn
• Determining Corn Leaf Stages
• Heat Unit Concepts Related to Corn Development

(20 May)

Missouri Integrated Pest & Crop Management Newsletter

Univ. of Missouri

• Field horsetail, a strange member of Missouri’s flora
• Utilizing small grains as forage
• Delaying glyphosate applications in RR soybean can cost you
• New label for Define® in field corn
• Early season soybean diseases
• Potato leafhopper risk to new stand alfalfa

(20 May)

Kentucky Pest News

Univ. of Kentucky.

• Monitoring corn seedlings
• Timing of postemergence herbicides relative to corn growth stage
• Watch for Stewart's wilt seedling blight

(20 May)

the Bulletin:
Pest mgmt & crop developmt information for Illinois

Univ. of Illinois

• Training Session to Focus on Managing Crop Production
• Insects Thus Far in 2004 (and Possible Coming Attractions)
• A Brief Summary of Soybean Aphid News
• Remember to Scout Alfalfa Regrowth for Signs of Alfalfa Weevil Damage
• First Potato Leafhoppers of the Year
• Illinois Seed and Seedling Diseases of Soybean
• Not Quite Out of the Woods

(19 May)

Nebraska Crop Watch Newsletter

Univ. of Nebraska.

• Soybeans and alfalfa susceptible to freeze injury
• Frost strikes wheat at vulnerable stage
• Precipitation levels since April 1 In western Nebraska: Lack of rainfall takes a toll on wheat
• Impact of increasing fuel prices on operation costs
• In southeast Nebraska: Conditions promote powdery mildew in wheat
• Why till soybean stubble?
• If water’s limited, consider planting a forage crop
• Harvest timing important to alfalfa quality, use
• Assess alfalfa fields and pests at harvest, adjust management

(19 May)

Ohio C.O.R.N. Newsletter

The Ohio State Univ.

• The Yellow Weed Returns!
• Timing of Postemergence Herbicides in Corn
• Common Lambsquarters Control, No-Tillage Roundup Ready Soybeans
• Sidedressing Corn -What should my rate be? Should I inject or dribble? Do I need an N stabilizer?
• Current Risk Of Head Scab In Ohio
• Powdery Mildew On Wheat, Northwest Ohio
• Soybean Stand Assessment
• Scout for Armyworm Now
• Cutworm Moths Continue to Fly
• Alfalfa Harvest Underway
• Corn Replanting Considerations

(17 May)

Declining Crop Prices - Too Much Too Soon?

Darrell Good, Univ. of Illinois

(15 May)

Determining Corn Leaf Stages

Bob Nielsen, Purdue Univ.

(15 May)

Heat Unit Concepts Related to Corn Development

Bob Nielsen, Purdue Univ.

(15 May)

Use Thermal Time to Predict Leaf Stage Development in Corn

Bob Nielsen, Purdue Univ.

(14 May)

Purdue Pest & Crop Newsletter

Purdue Univ.

• Smidgen of Field Crops Insect Damage
• Stalk Borer Soon to Migrate
• Inspect Alfalfa New Growth for Weevil Damage
• Model Predicts Western Corn Rootworm Hatch
• Impressive Armyworm Moth Flight in NE Indiana
• Weed Management Considerations in Corn in a Warm, Windy, Dry and Now Wet Spring?
• Update on Risk of Fusarium Head Blight of Wheat in Southern Indiana
• Growing Points of Interest
• The Roots of the Matter
• “Silver Leaf” Symptom in Young Corn
• Effects of Flooding or Ponding on Young Corn
• Check Corn Fields for Emergence Problems

(13 May)

Missouri Integrated Pest & Crop Management Newsletter

Univ. of Missouri

• Fusarium head blight or scab of wheat
• Stewart's bacterial wilt of corn
• Potential for armyworms in wheat, tall fescue seed fields
• Armyworms in corn
• Armyworms in wheat fields
• Update on insect problems in field corn
• Bean leaf beetles

(13 May)

Michigan Field Crop Team Advisory Alert

Michigan State Univ.

• Poncho replant restrictions – know the label
• Tiny springtails pose a big problem – again!
• Watch for alfalfa weevil
• Expect potato leafhopper soon
• Watch for cutworms and armyworm
• Don’t forget AMS with glyphosate
• Considerations for replanting other crops after sugar beets
• Managing scab (fusarium head blight) and other diseases on wheat
• Managing corn and soybean fields submerged by recent heavy rains
• Sprayer calibration reminders
• Harvest alfalfa on time to get top quality forage

(13 May)

Insect Interactions with Herbicides

Bob Hartzler, Iowa State Univ.

(13 May)

Iowa Integrated Crop Management Newsletter

Iowa State Univ.

• Stewart's disease risk for 2004
• Blacks and dingys: confusing cutworms
• Delayed herbicide options for emerged corn
• Crop-specific cultivating tillage
• First cutting dates predicted for black cutworm
• How and why we measure degree days

(13 May)

the Bulletin:
Pest mgmt & crop developmt information for Illinois

Univ. of Illinois

• Watch for Bean Leaf Beetles in Fields of Emerging Soybeans
• Insuring "Insect Insurance"
• Corn Rootworm Larval Hatch: Just Around the Corner?
• Intense Captures of Black Cutworm Continue
• Slugs in No-Till
• Where Are the Alfalfa Weevils?
• Tips for Keeping Herbicides on Target

(13 May)

Kentucky Corn & Soybean Science Newsletter

Univ. of Kentucky.

• Damping Off
• Frost Injury on Young Corn
• Soil Sampling for SCN
• How Much N to is Too Much N?
• Planning for Harvest and Storage Needs
• More Reasons to Rotate
• Searching for Resistant Ryegrass

(13 May)

Kentucky Pest News

Univ. of Kentucky.

• Delayed applications of pre-emergence herbicides for corn

(11 May)

The Roots of the Matter

Bob Nielsen, Purdue Univ.

(11 May)

Ohio C.O.R.N. Newsletter

The Ohio State Univ.

• Bean Leaf Beetle (BLB) Emerging
• Applying Preemergence Herbicides To Emerged Corn
• Heading in Southern OH, What is The Risk Of Head Scab
• Where are Micronutrient Deficiencies Most Likely to Occur?
• Check Corn Fields For Emergence Problems
• New Requirements On Labels, Selection of Nozzles For Drift
• Purple Corn, What Is Going On?

(11 May)

Nebraska Crop Watch Newsletter

Univ. of Nebraska.

• Nebraska soil moisture -- the 'haves' and the 'have nots'
• Emerging corn likely safe from recent low temperatures
• Wheat too escapes significant damage
• Western wheat needs moisture
• Alfalfa damage variable
• Cutting healthy alfalfa early has advantages and less yield
• When spring showers don't develop, what happens to preemergents?
• Clearfield systems now available for sunflowers
• Soybean row spacing affects velvetleaf competitiveness
• Reducing ragweed in pastures
• How insects can influence weed control timing
• Scout corn at emergence for insect pests
• Rescue treatments preferred for cutworm control
• Scout southeast Nebraska for southern corn leaf beetle

(10 May)

Income Prospects Look Good For Soft Red Winter Wheat

Darrell Good, Univ. of Illinois

(10 May)

Iowa Integrated Crop Management Newsletter

Iowa State Univ.

• Early season scouting
• Frost damage
• Frost injury to alfalfa
• Protect yourself for safe pesticide application
• Soybean seedling diseases in 2004
• Recent weather and herbicide performance

(8 May)

"Silver Leaf" Symptom in Young Corn

Bob Nielsen, Purdue Univ.

(7 May)

Effects of Flooding or Ponding on Young Corn

Bob Nielsen, Purdue Univ.

(7 May)

Growing Points of Interest

Bob Nielsen, Purdue Univ.

(7 May)

Growing Point Location in Corn at Different Growth Stages

Bob Nielsen, Purdue Univ.

(7 May)

Purdue Pest & Crop Newsletter

Purdue Univ.

• Black Cutworm Scouting Should Begin
• Armyworm in Wheat
• Poison Hemlock - The Toxic Parsnip
• Update on Risk of Fusarium Head Blight of Southern Indiana
• Fearmonger Alert: Freeze Injury Potential for Early-Planted Corn
• Requirements for Uniform Germination and Emergence of Corn
• The Emergence Process in Corn
• Corkscrewed Corn Seedlings
• Germination Events in Corn
• Wheat Condition and the Potential of Cold Injury to the Wheat Plant

(7 May)

Missouri Integrated Pest & Crop Management Newsletter

Univ. of Missouri

• Post-cutting weed management options in alfalfa
• Seed decay and seedling blights of corn
• Quilt: special local need registration accepted
• Insect situation

(7 May)

Michigan Field Crop Team Advisory Alert

Michigan State Univ.

• Soybean aphid, Part III: Insecticides
• Herbicide selection in winter wheat past Feeke’s Stage 6
• Delayed herbicide application in corn
• Considerations for weed control in non-GMO soybean
• Missed a micro-rate herbicide application timing: What are the options?
• Stewart’s wilt risk in sweet corn and seed corn in Michigan

(7 May)

Kentucky Pest News

Univ. of Kentucky.

• Southern corn leaf beetle
• Cutworms active in corn

(7 May)

the Bulletin:
Pest mgmt & crop developmt information for Illinois

Univ. of Illinois

• Time for Alfalfa Watch
• Update of Moth Captures
• Southern Corn Leaf Beetle
• Windy Planting Conditions and Application of Granular Soil Insecticides: Is Placement Significantly Affected?
• Stripe Rust of Wheat Reported in Illinois
• Time to Look for Corn Nematode Injury
• A Plethora of Corn Postemergence Concerns
• Waiting for Warmth

(4 May)

Nebraska Crop Watch Newsletter

Univ. of Nebraska.

• Sorghum -- a well-placed rotation crop
• Health benefits of sorghum explored further
• Target weeds in sorghum early in the season
• How particle size and distribution affect spray drift and efficacy
• Soybeans provide sorghum with much more than 45 lbs N
• Nebraska trials test starter fertilizer
• Estimating nitrogen losses
• Wheat diseases developing
• Maximizing oats in pasture
• Options for delayed alfalfa planting

(4 May)

Recent Weather and Herbicide Performance

Bob Hartzler, Iowa State Univ.

(4 May)

Kentucky Pest News

Univ. of Kentucky.

• Alfalfa weevil control
• Fusarium head blight risk in wheat
• Early-season weed management strategies in grain sorghum

(4 May)

Ohio C.O.R.N. Newsletter

The Ohio State Univ.

• Slug Update
• Early Season Bean Leaf Beetle
• Increase in Black Cutworm Moth Catch
• Powdery Mildew Increasing In Fields Of Susceptible Varieties
• Estimating N Losses from Burning of Corn Residue
• Burndown Situations Get Tougher
• Early Corn Plantings and Heat Unit Requirements for Emergence
• Management That Increases Soybean Yield
• Will Low Temperatures Injure Early Planted Corn Fields?

(4 May)

USDA To Provide First Look At 2004-05

Darrell Good, Univ. of Illinois

(3 May)

Freeze Injury Potential for Early-Planted Corn

Bob Nielsen, Purdue Univ.

(2 May)

Requirements for Uniform Germination and Emergence of Corn

Bob Nielsen, Purdue Univ.

(2 May)

The Emergence Process in Corn

Bob Nielsen, Purdue Univ.

(2 May)

Coleoptile Appearance During Emergence

Bob Nielsen, Purdue Univ.

(2 May)

Germination Events in Corn

Bob Nielsen, Purdue Univ.

(2 May)

Visible Indicators of Germination in Corn

Bob Nielsen, Purdue Univ.

(1 May)

Corkscrewed Corn Seedlings

Bob Nielsen, Purdue Univ.