Crops Bulletin
 May 26, 2016   
  Issue 4  
    
 

Prepared by

Paul Kassel

Extension Field Agronomist

 

Phone: 

(712) 262-2264

Email: [email protected] 

 

 

Serving Clay, Buena Vista, Dickinson, Emmet, Hancock, Kossuth, Palo Alto, Pocahontas, Sac and Winnebago Counties

 

 

The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, gender, religion, age, disability, political beliefs, sexual orientation, and marital or family status. (Not all prohibited bases apply to all programs.) Many materials can be made available in alternative formats for ADA clients. To file a complaint of discrimination, write USDA, Office of Civil Rights, Room 326-W, Whitten Building, 14th and Independence Avenue, SW, Washington, DC 20250-9410 or call 202-720-5964.

Soybean planting date. Soybean planting date info shows that soybean yield potential for late May planted/replant is well over 90%. Consider replanting soybeans if populations are less than 75000 plants/acre or about 5 plants per foot of row in a 30 inch row.
 
Land rolling emerged soybeans. Soybeans can be rolled after emergence. Rolling emerged soybeans can be completed any time after emergence - preferably after the unifoliate leaves have unfurled.   Land rolling emerged soybeans should occur before the V3 stage - which is about 6-inch tall soybean. More info is available here.
 
Corn replanting. Plant populations of about 10,000 to 15,000 plants would be expected to yield about 70 to 80% of normal. Corn replanted the last week of May is expected to yield about 70% of normal. A stand below 15,000 may need to be replanted. This checklist has some useful replant info.

Black cutworm.   Continue to check for damage from black cutworm. A predicted date where black cutworm is large enough to damage corn was May 22 in northern Iowa. No large problems are expected but check fields for damage.
 
New Farm management specialist. Gary Wright has recently joined ISU Extension as a Farm Management Program Specialist.   Gary will join  Shane Ellis and  Kelvin Leibold to provide research based farm management programming in northwest Iowa.
   

Prepared by Paul Kassel, Extension Field Agronomist

Phone: (712) 262-2264, Email: [email protected]