Thursday, November 16, 2006 - 8:00 AM

Effect of Nitrogen, Sulfur, and Planting Rate on Dryland Malt Barley.

Grant Jackson and John Miller. Western Triangle Ag Research Center, PO Box 974, Conrad, MT 59425

Dryland malting barley (Hordeum vulgare L.) experiments were initiated in north central Montana to evaluate the effects of planting, N, and S rates on grain yield and quality.
Planting rates of 10, 15, and 20 seeds/ft2, nitrogen (N) rates of 0, 30, and 60 lbs N/acre, and S rates of 0, 10, and 20 lbs/acre were applied in all possible combinations to Metcalfe barley at 11 locations in 2004 and 2005. Optimal grain yields were generally achieved with a planting rate of 15 seeds/ft2, but 10 seeds/ft2 produced grain with the highest kernel plumpness and the highest grain protein content. Barley responses to N were similar to previously published data i.e. increasing N resulted in higher yield and protein content but lower kernel plumpness. Sulfur fertilization had little effect on grain quality but increasing S significantly lowered grain yields at several locations.