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Foliar Fertilizer for Bluegrass

David Ostheller
with Lawrence Brown

Objective

Test use of foliar fertilizer on bluegrass.

Location: Fairfield, WA
Annual precipitation: 21 inches
Rotation: 8 year-old bluegrass stand

Treatments

Check - no foliar fertilizer
Foliar - 7 GPA 16-0-2, 2 Ca, 2 Mg urea form, plus 1 quart R-900/60 gal solution

Comments

Foliar was applied on 20 April 94 to pre-headed-out South Dakota bluegrass. Applied in 30 GPA using 800s nozzles, four miles per hour and 30 psi. Air temperature was 60^oF. Plots were 25 ft by 400 ft. Harvest was 7 July 94.

Data

Yield, lbs per plot uncleaned seed

Treatment Rep 1 Rep 2 Rep 3 Rep 4 Average

Folia 94 98 88 86 92a

Check 104 102 92 90 97b

LSD (5%) 4.8

CV 2.2%

Conclusion

Rainfall patterns were poor for bluegrass production last year. The yield difference is probably due to wheel tracks in the foliar plots, I should have driven across the check plots also. Bluegrass doesn't seem to respond well to spring fertilizer. Fall fertilizer and timely rains seem much more important.

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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