Farmers commonly apply fixed ‘blind' quantities of nitrogen fertilizer during the fallow or at seeding in rain fed winter wheat-fallow systems in Northcentral Oregon, an area characterized by high year-to-year variation in growing conditions. Knowing crop response to available N depends on...

This paper explores short and long run economic outcomes of fixed label herbicide doses versus a flexible ‘‘best efficacy targeting strategy'' (BETS), which is factor adjusted to current weather and density of weeds. A herbicide efficacy model is combined with water balance, wheat yield,...