Cool-Season Grass Hay Crops
Cool-season grass crops (timothy, orchard grass, and others) are important hay crops in several areas in CA and other western states. This hay crop is exported and sold domestically, based largely on aesthetics and crop appearance. High prices can be obtained for excellent quality hay. In recent years, thrips, (Anaphothrips obscurus), and mites (several species) have developed into significant pests of cool-season grass crops. The leaf damage from these pests can hinder the hay appearance and reduce profitability. The reasons for the upswing in thrips and mite populations are unknown. Research is underway to better understand this system and to develop an IPM program for cool-season grass crops.
- Sampling schemes for thrips and mites in timothy.
- Biorational control measures for timothy pests.
- Treatment thresholds for thrips and mites in timothy.
- Field biology of thrips in timothy.
- Winter grain mite biology and management