Weekly Crop Update

University of Delaware Cooperative Extension

Volume 5, Issue 22

August 28, 1997

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Field Crops:

Field Crop Insects -

Joanne Whalen, Extension IPM Specialist.



Joanne is out this week. Just a reminder that insect level information is available on the Crop Pest Hotline. The Hotline is updated each week on Tuesday and Friday. Please refer to past issues of Weekly Crop Update for control recommendations. The phone number for the Crop Pest Hotline is listed below...



U of D Crop Pest Hotline:

In State: 1-800-345-7544

Out-of-State: 302-831-8851


 UpComing Events...


Small Grain Decision Making Twilight Workshop


Date: Thursday, September 4, 1997


Time: 5:30 p.m. - 8:00 p.m.


Place: Lake Forest High School Vocational Agriculture Bldg., Felton, DE


Meal: A chicken dinner will be provided.


All Kent County farmers and interested individuals are invited to attend a county twilight workshop on small grain decision making sponsored by the University of Delaware Cooperative Extension Service in Kent County. This workshop will be held on Thursday, September 4, 1997 at the Lake Forest High School VoAg. building from 5:30-8:00 p.m. Dinner will be provided starting at 5:30 p.m.


Come prepared with information on how you produce small grains (wheat, barley) on your farm, and how you approach decision making. Working together we will discuss critical decisions for small grains, important stages in wheat and barley growth, economics of pest control, soil factors and fertilization, variety selection, planting considerations, critical timings and much more.


Extension weed, pest and agronomy specialists will be on hand to help provide additional information and expand on subjects. However, we are not just talking at you: this workshop will be in a discussion format with everyone participating. The goal is to provide you with enough information so that you can come up with the best decisions for your own farm. At the end of the session you will come away with a checklist of decision items to follow that is tailored for you operation. One pesticide recertification credit will be awarded for those attending.


Everyone that is interested is welcome to attend. For additional information or special assistance in accessing this meeting, contact Gordon Johnson at the Kent County Extension Office. Please phone the Kent County Extension Office at 302-697-4000 by Wednesday, September 3, 1997 to register for this workshop (we need to know how many meals to provide).


Hope to see you there!


 Irrigating Soybeans -

Richard Taylor, Extension Agronomist



To obtain the highest yield form irrigated soybeans, you should provide about 2 inches of water (irrigation plus rainfall) during flowering and most of pod-fill. Once soybean leaves begin to turn color, water use has declined by about half. You should gradually reduce the amount of irrigation water applied beginning when the majority of pods have full-sized beans. When one pod on the main stem (of the majority of the plants) has turned to the mature pod color, irrigation should stop. This stage indicated physiological maturity (the point at which no more yield will be added). From this stage on, it takes 1 to 2 weeks to reach maturity (R8-95 percent of pods at mature pod color). From R8, it takes 1 to 3 weeks, depending on drying conditions, for beans to dry to about 15 percent moisture.

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Vegetable Crops:

Vegetable Crop Insects -

Joanne Whalen, Extension IPM Specialist.



U of D Crop Pest Hotline:

In State: 1-800-345-7544

Out-of-State: 302-831-8851

Upcoming Events:


Pumpkin Twilight Meeting


Date: Thursday, September 25, 1997


Location: Wye Research & Education Center, Queenstown, MD


Time: 4:30 p.m. - Until...


A chance to view the Great Wye Pumpkin Patch. Studies include: No-till pumpkins, 24 varieties (cultivars), nitrogen study, heat stress study, disease control study, and double crop pumpkins after annual strawberries.


For more information about the meeting, call 410-827-8056.


Dates and Locations for Upcoming Quarterly Pesticide Training & Testing


September 16 & 17, 1997

Location: Kent County Cooperative Extension Office



Sept. 16th - 8 a.m. - 4 p.m.

Sept. 17th - 8 a.m. - 12 noon.


Sept.17th - 1 p.m. - 4 p.m.


December 2 & 3, 1997

Location: Sussex County Cooperative Extension Office



Dec. 2nd - 8 a.m. - 4 p.m.

Dec. 3rd - 8 a.m. - 12 noon.


Dec. 3rd - 1 p.m. - 4 p.m.

Weather Summary

University of Delaware,

Georgetown, DE

 Week of August 22 to August 28, 1997



Readings taken for the previous 24 hours at 8 a.m.




Ranged from 84 F on August 25 & 28 to 78 F on August 24.


Ranged from 60 F on August 22 to 52 F on August 24.


Soil Temperature:

71.5 F. Average for the week.



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Complied & Edited By:

Tracy Wootten

Extension Associate - Vegetable Crops

Cooperative Extension Education in Agriculture and Home Economics, University of Delaware, Delaware State College and the United States Department of Agriculture cooperating, John C. Nye, Dean and Director. Distributed in furtherance of the Acts of Congress of May 8 and June 30, 1914. It is the policy of the Delaware Cooperative Extension System that no person shall be subjected to discrimination on the grounds of race, color, sex, disability, age or national origin.



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