2012
Control measures for iron deficiency chlorosis in soybean
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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:
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) remains a common and destructive disease of soybean in Northern States. Variety selection is the most effective control measure. Most seed companies give a chlorosis rating to their varieties, but companies use different rating scales that confuse farmers. Some seed companies do not provide side-by-side comparisons that can be used by farmers to select varieties most appropriate for their farm. The commercial chlorosis evaluations that are available to farmers are not satisfactory.

Unique Keywords:
#fe-eddha, #foliar iron, #idc, #iron deficiency, #iron deficiency chlorosis (idc), #soybean diseases, #soybean variety testing
Information And Results
Final Project Results

? Early-planted soybean (May 5) emerged 10 days earlier, flowered five days earlier, and yielded 2.8 bu/acre (6.5%) higher with larger seed size and higher oil, but lower test weight and protein, compared to the later-planted soybean (May 19).
? Direct-seeded yield was 1.9 bu/ acre (6%) greater than yield with conventional tillage.
? Response to complete starter fertilizer (liquid 6-24-6) treatments was similar. However, yield tended to be higher with broadcast-applied fertilizer compared to banded fertilizer and the untreated check.
? Yield increased 6.5 bu/acre (14.5%) with foliar fungicide compared to the untreated check. Fungicide application was made several days after significant hail damage to the trial.

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.