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Foliar Fertilizer on Soft White Spring Wheat

Bill Stillman
with Ken Hart, Lewis/Idaho County Cooperative Extension

Objective

Evaluate yield impact of foliar fertilizers on soft white spring wheat production.

Location: 20 miles NW of Nezperce, ID on Central Ridge, Lewis County
Annual precipitation: 20 - 22 inches
Previous crop: Spring barley
Fertility: 40-20-0-14 , fall 1994 and 30-0-0-12, spring 1995

Treatments

Check - no foliar
Treatment 1 - 7 lbs./acre 17-22-22 w/ boron, copper, manganese, molybdenum and zinc (Gainer, provided by the Lewiston Grain Growers)
Treatment 2 - 2 oz. seaweed and 1 lb. 7-11-27 w/ chelated micronutrients per acre (Reward, provided by Wilkes Agricultural Products)

Comments

Foliar application of 10 gallons solution/acre was made on June 14, 1995. Wheat was fully tillered (Feekes stage 5). Plot size was 30' X 1100', with four replications of treatments. Plots were harvested on September 11 and weighed with portable truck scales.

Data

**Yields** bu/ac
Treatment	Rep 1	Rep 2	Rep 3	Rep 4	Average
Check	82.1	84.2	87.7	79.3	83.3a
Foliar 1	77.9	82.0	82.5	85.9	82.1a
Foliar 2	84.7	80.5	77.6	81.3	81.0a
LSD					6.8

Conclusion

The foliar applications had no effect on yield, as measured by this test. This field was fertilized for fall recropping, but not seeded until spring due to adverse conditions. Above average fertility situation for spring wheat may have masked the action of the foliar. This is the first year of evaluation in a planned three year project.

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Hans Kok, WSU/UI Extension Conservation Tillage Specialist, UI Ag Science 231, PO Box 442339, Moscow, ID 83844 USA Redesigned by Leila Styer, CAHE Computer Resource Unit; Maintained by Debbie Marsh, Dept. of Crop & Soil Sciences, WSU