We also know calcium and iron are adequate during the entire growing season, and potassium high until mid September. NDSU Extension Service, in cooperation with the Animal and Range Sciences Department and Hettinger Extension and Research Center, has conducted grazing trials on leafy spurge infested rangeland throughout North Dakota. Sheep effectively controlled leafy spurge after one year using a single species grazing approach and after three years using a multi-species grazing approach. Seasonlong grazing using a multi-species approach provided a quicker, more efficient grazing of leafy spurge than rotational grazing. Though no natural resistance was detected in current varieties, the information provides a benchmark for future evaluation of resistant durum wheats for the state and region.
Educational efforts continue on wheat midge management.
The sixth statewide survey for assessing overwintering populations of midge was conducted. The results help identify risk potential for midge infestations in the upcoming season. This information is made available through the state survey, grower meetings, newsletters, and news releases. Meetings conducted during the year addressed a broad scope of topics. One emphasis area was aphid management in small grains due to their abundance in 1999 and prevalence of barley yellow dwarf virus.