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ISU Extension Logo

Northwest Iowa
Crop Update Newsletter
by Todd Vagts
ISU Extension Crops Specialist
Counties Served:  Carroll, Calhoun, Crawford, Ida, Monona, Pocahontas and Sac.

   
Welcome to my weekly Crop Update Newsletters.  The purpose of this newsletter is to keep those involved and interested in northwest Iowa agriculture updated on current news at ISU; to disseminate timely and helpful weather and crop production-protection information; to document what I am seeing in the field as I travel the seven county area;  and hopefully give insight and ideas for solving production problems as they happen. I encourage any thoughts and ideas as to how I can improve the newsletter as the season progresses.

To receive this newsletter via email, please register

[Home] [ Weather Data ] [ Special Topics ] [ Subsoil H20 ] [ Yield Trials ] [ PDF Info ]

Back Issues
Newsletter 2004 Newsletter 2003 Newsletter 2002 Newsletter 2001

Volume, No.

Printer Friendly 

Topics

Special Issues, Topics

bulletVol 4, No 32
November 24, 2004

bulletWord

bullet pdf

bullet Season recap
bullet Soybean Rust Info
bullet Crop Advantage Conference
bullet Fall soil moisture survey
bullet ICIA yield trial data available
bullet Corn RW insecticide performance data
bullet Soybean Cyst resistant varieties
bullet Tillage study cooperators needed

Soybean Rust

Soybean Aphid Yield Check Survey


bulletVol 4, No 31
October 11, 2004

bulletWord

bullet pdf

bullet Grain drying and storage
bullet Corn stalk feed value
bullet Minimize soil compaction
bullet Deep tillage considerations
bullet Soil sampling for future manure mngt.plans
bullet Use crop residue to protect the soil

Soybean Aphid Yield Check Survey

bulletVol 4, No 30
October 04, 2004

bulletWord

bullet pdf

bullet Soybean harvest near complete
bullet Degree-day overview
bullet Corn dry-down estimates
bullet Calculating corn shrink
bullet Take the soybean aphid survey

Degree-days
Crop Model Data

bulletVol 4, No 29
September 27, 2004

bulletWord

bullet pdf

bullet Near record warm September
bullet Corn dry-down rates
bullet Avoid harvest losses
bullet Weather comments
bullet Take the soybean aphid treated vs. non-treated yield survey

Degree-days
Crop Model Data

bulletVol 4, No 28
September 20, 2004

bulletWord

bullet pdf

bullet Warm trend continues.
bullet Soybean harvest tips
bullet Avoid soybean hidden yield losses
bullet On-farm soybean storage
bullet Take the soybean aphid treated vs. non-treated yield survey
bullet Corn rootworm B.t., the Illinois experience
bullet Schedule learning opportunities

Degree-days
Crop Model Data

bulletVol 4, No 27
September 13, 2004

bulletWord

bullet pdf

bullet Fortunately, another warm week.
bullet Harvest begins on early soybeans
bullet Grain drying and storage fact sheet
bullet Plant winter rye as a cover crop
bullet Last chance to scout and evaluate fields
bullet Fall forage management options

Degree-days
Crop Model Data

bulletVol 4, No 26
September 03, 2004

bulletWord

bullet pdf

bullet 3rd warmest week of the year
bullet Cool temp effects on corn and soybean
bullet Estimating soybean yields
bullet Prepare storage facilities for grain
bullet Fall corn stalk test

Degree-days
Soybean Aphid
Crop Model Data

bulletVol 4, No 25
August 30, 2004

bulletWord

bullet pdf

bullet Crop development 12 days behind normal
bullet Harvesting lodged and drought stressed corn
bullet Estimating soybean yields
bullet Powdery mildew in soybean fields
bullet End of year field evaluations
bullet Give the alfalfa a rest

Degree-days
Soybean Aphid
Crop Model Data

bulletVol 4, No 24
August 23, 2004

bulletWord

bullet pdf

bullet Last week for aphids
bullet Warmer temperatures return
bullet Harvest Silage at the correct moisture
bullet Predicting silage harvest date

Degree-days
Soybean Aphid
Crop Model Data

bulletVol 4, No 23
August 16, 2004

bulletWord

bullet pdf

bullet Cool temperatures continue
bullet Remembering when
bullet Soybean growth stages
bullet Soybean aphid numbers increase

Degree-days
Soybean Aphid
Crop Model Data

bulletVol 4, No 22
August 09, 2004

bulletWord

bullet pdf

bullet Manure solid settling highlighted at field day
bullet August or October?
bullet Corn and Soybean advancing slowly
bullet Soybean aphid numbers increase
bullet The SAGE Models predicts aphid population growth
bullet WBC moth catch drops dramatically

Western Bean Cutworm
Bean Leaf Beetle
Degree-days
Soybean Aphid
Crop Model Data

bulletVol 4, No 21
August 02, 2004

bulletWord

bullet pdf

bullet Rain and mild temps benefit grain fill
bullet Soybean leaf sunburn
bullet Compensating for forage shortages
bullet Grain harvest preparations
bullet Soybean aphids still hard to find
bullet Continue scouting WBC in replanted corn
bullet Conditions ideal for white mold
bullet Manure nutrient mngt short course

Western Bean Cutworm
Bean Leaf Beetle
Degree-days
Soybean Aphid
Crop Model Data

bulletVol 4, No 20
July 26, 2004

bulletWord

bullet pdf

bullet Below normal degree-days for 6 weeks
bullet Predicting corn harvest dates
bullet Soybean crop nearing critical yield phase
bullet Cool nights – too much of a good thing?
bullet Late summer alfalfa seeding
bullet WBC moth catch peaks
bullet Conditions ideal for SA development
bullet Soybean diseases make early appearance

Western Bean Cutworm
Bean Leaf Beetle
Degree-days
Soybean Aphid
Crop Model Data

bulletVol 4, No 19
July 19, 2004

bulletWord

bullet pdf

bullet Pollination under ideal conditions
bullet Soybeans starting to develop pods
bullet Cool conditions will delay crop maturity
bullet Scout now for 1st generation BLB
bullet WBC moth catch increases
bullet Soybean aphids scarce, but be vigilant

Western Bean Cutworm
Bean Leaf Beetle
Degree-days
Soybean Aphid
Crop Model Data

bulletVol 4, No 18
July 12, 2004

bulletWord

bullet pdf

bullet Above normal degree-days forecasted
bullet Corn begins pollination
bullet Soybeans at full flower
bullet WBC moths caught
bullet BLB 1st generation scouting
bullet Soybean Aphid remains scarce

Western Bean Cutworm
Bean Leaf Beetle
Degree-days
Soybean Aphid

bulletVol 4, No 17
July 06, 2004

bulletWord

bullet pdf

bullet Cool conditions prevail
bullet Corn development nears tassel
bullet WBC and BLB monitoring
bullet Holcus Spot in corn
bullet Soybean leaf cupping

Western Bean Cutworm
Bean Leaf Beetle
Degree-days
Soybean Aphid

bulletVol 4, No 16
June 28, 2004

bulletWord

bullet pdf

bullet Degree-day accumulation falls below normal
bullet Corn reaches critical yield determination period
bullet Soybean begin flowering
bullet 1st generation Bean Leaf Beetle
bullet Western Bean Cutworm
bullet Soybean Aphid Update
bullet Wet conditions promote corn leaf diseases

Western Bean Cutworm
Bean Leaf Beetle
Degree-days
Soybean Aphid

bulletVol 4, No 15
June 21, 2004

bulletWord

bullet pdf

bullet Crop Scouting Clinic
bullet Degree-day accumulation falls below normal
bullet Soybean to begin flowering
bullet Iron Chlorosis in Soybean
bullet Flooded crop information
bullet Learning from a “Computer” crop
bullet Scout for Soybean Cyst
bullet Asian Soybean Rust information

Degree-days

Soybean Aphid


bulletVol 4, No 14
June 14, 2004

bulletWord

bullet pdf

bullet Soybean Aphids make early appearance
bullet Cooler week forecasted
bullet Oat harvest recommendations
bullet Corn leaf striping
bullet Wet conditions promote soybean disease
bullet Potato leaf hopper threshold

Degree-days

Soybean Aphid


bulletVol 4, No 13
June 07, 2004

bulletWord

bullet pdf

bullet Warm week ahead
bullet Remove weeds early to avoid yield loss
bullet Monitor fields for disease problems
bullet Soybean rust update
bullet Potential Alfalfa pest problems

Degree-days
Corn Planting Guide
Soybean Replant Decisions


bulletVol 4, No 12
June 01, 2004

bulletWord

bullet pdf

bullet Corn-Soybean development near normal
bullet Consider raising alfalfa cutting height
bullet Post-emergent weed control options
bullet Stalk borer migration to begin this week
bullet Rootworm hatch to begin next week
bullet Assessing N loss potential

Degree-days
Hail Damage on Corn and Soybeans
Corn Planting Guide
Soybean Replant Decisions


bulletVol 4, No 11
May 23, 2004

bulletWord

bullet pdf

bullet Excessive rains damage crops
bullet
Corn, soy and alfalfa damage assessment tools
bullet
Plant survival under water
bullet Alfalfa at optimum quality
bullet Delayed weed control options
bullet Assessing N loss potential

Degree-days

Hail Damage on Corn and Soybeans

Corn Planting Guide

Soybean Replant Decisions


bulletVol 4, No 10
May 17, 2004

bulletWord

bullet pdf

bullet Degree-day accumulation near normal
bullet Early planted corn at V4
bullet Monitor soybean fields
bullet Predicting in-field alfalfa quality
bullet Over-wintered Bean leaf beetle thresholds
bullet Late spring nitrate test

Black Cutworm

Soil Temp

Degree-days

Crop Emergence Dates


bulletVol 4, No 09
May 10, 2004

bulletWord

bullet pdf

bullet Degree-day accumulation 134% of normal
bullet Early planted corn at V2
bullet
Evaluate replant situations economically
bullet Projected black cutworm cutting date May 20
bullet Early emerged soybeans and bean leaf beetles
bullet Soybean germination and emergence
bullet Making the most of Post emergent herbicides

Black Cutworm

Soil Temp

Rust Risk Analysis

Degree-days

Crop Emergence Dates


bulletVol 4, No 08
May 03, 2004

bulletWord

bullet pdf

bullet Degree-day accumulation to spike
bullet
Early planted corn to reach V2
bullet Soybean seeding rate
bullet
4-week wet dry cycle
bullet USDA Soybean Rust risk analysis
bullet How windy has it been?
bullet Plant to avoid soybean diseases
bullet Soybean insect pest management

Black Cutworm

Soil Temp

Rust Risk Analysis

Degree-days


bulletVol 4, No 07
April 26, 2004

bulletWord

bullet pdf

bullet Near normal growing season predicted
bullet Soil temperatures remain cool
bullet Degree-day accumulation near normal
bullet Avoid herbicide drift potential
bullet Black cutworm moths caught
bullet Bean leaf beetle over-wintering mortality
bullet Control musk thistles in May

Black Cutworm

Soil Temp


bulletVol 4, No 06
April 19, 2004

bulletWord

bullet pdf

bullet Soil temperature peaks
bullet Degree-day accumulation above average
bullet Monitor seedling germination and emergence
bullet Soil moisture survey
bullet Scout for Alfalfa Weevils

Alfalfa Weevil

Soil Temp


bulletVol 4, No 05
April 12, 2004

bulletWord

bullet pdf

bullet Monitoring soil temperatures
bullet Don’t plant corn to early
bullet Optimum corn seeding rates
bullet Information on producing popcorn
bullet Avoid ammonia injury to corn roots
bullet Prepare to scout for Alfalfa Weevils
bullet Predicting weed emergence
bullet Rethinking the use of dual tires

Alfalfa Weevil

Evaluate Alfalfa Stands

Soil Temp


bulletVol 4, No 04
April 05, 2004

bulletWord

bullet pdf

bullet Monitoring soil temperatures
bullet Strive for uniform plant emergence
bullet Interpreting seed lab results
bullet Check alfalfa for winter stand injury
bullet ISU Nitrogen rate recommendations
bullet Time to set wireworm bait traps
bullet Soybean rust update

Evaluate Alfalfa Stands

Soil Temp


bulletVol 4, No 03
March 29, 2004

bulletWord

bullet pdf

bullet Precipitation well above normal
bullet
Soil temperature to cool slightly
bullet Use WebGro with last minute soybean management decisions
bullet Comments on Soybean Aphid in 2004
bulletGaucho seed treatment for soy

 


bulletVol 4, No 02
March 22, 2004

bulletWord

bullet pdf

bullet Soil temperatures running above normal
bullet Climate data sources
bullet Oat seeding
bullet Alfalfa Seeding Tips
bullet Insecticide and Fungicide seed treatments
bullet On-line newsletters

 


bulletVol 4, No 01
March 09, 2004

bulletWord

bullet pdf

 

bullet Comments from Elwynn Taylorbullet Western IA in hydrological drought
bullet Soybean aphid treatment survey yields results
bullet Soybean aphid educational CD
bullet Gaucho seed treatment on soybean seed
bullet On-line newsletters a good source of information

 

 
       
       

Information on Portable Document Files (.pdf)

For more information on crop related topics in IA, visit the
Integrated Crop Management Newsletter web site.

Back Issues

 

NW Iowa Crops webpage ]

For questions or comments please respond to vagts@iastate.edu

This page last updated on 01/26/05

IOWA STATE UNIVERSITY
OF SCIENCE AND TECHNOLOGY

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