2014
Control measures for Iron Deficiency Chlorosis in North Dakota
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Contributor/Checkoff:
North Dakota Soybean Council
Category:
Sustainable Production
Keywords:
Crop protectionDiseaseField management
Parent Project:
Screening soybean varieties for resistance to iron deficiency chlorosis
Lead Principal Investigator:
R Jay Goos, North Dakota State University
Co-Principal Investigators:
Kirk Howatt, North Dakota State University
Richard K Zollinger, North Dakota State University
+1 More
Project Code:
Contributing Organization (Checkoff):
North Dakota Soybean Council
(n/a)
Institution Funded:
North Dakota State University
(n/a)
Brief Project Summary:

Iron Deficiency Chlorosis (IDC) is a widespread and destructive disorder in North Dakota. Foliar sprays as rescue treatments have generally given disappointing results. The objective of this study was to determine if plant response to a foliar iron spray could be improved by the selection of a proper adjuvant. Five studies were performed under greenhouse conditions. Twenty-one adjuvants were tested, representing different adjuvant types. Two iron sources, FeEDDHA and ferrous lignosulfonate, were employed.

Unique Keywords:
#adjuvants, #iron deficiency chlorosis (idc), #soybean diseases, #soybean fertility studies
Information And Results
Project Deliverables

Recommendations for the use of adjuvants in foliar-applied iron fertilizers.

Final Project Results

Unfortunately, no matter which adjuvant was used, the iron proved to be very immobile once inside the leaf. There was no apparent movement of iron “downstream” into the unsprayed tip of the center leaflet, and there was no apparent movement of iron “upstream” into the unsprayed new leaves. This represents a great challenge: how to improve iron’s mobility once it is absorbed into the leaves.

The United Soybean Research Retention policy will display final reports with the project once completed but working files will be purged after three years. And financial information after seven years. All pertinent information is in the final report or if you want more information, please contact the project lead at your state soybean organization or principal investigator listed on the project.