In the Canby, Boyd, and Dawson area we are seeing high enough pressure from spider mites to justify an application of 1 pint of Lorsban, or a generic form, to gain control of this generation.
If you are looking at your soybean crop and thinking it might be too late to spray on a fungicide, it probably isn’t. Soybean fungicides can still be beneficial up to the R5 growth stage.
If you are having trouble with newly established alfalfa, try adding RzyUp SmartGrass along with your insecticide and fungicide pass. This will help it grow faster, add tonnage, and improve overall quality. Additionally, you can apply it to your lawn to keep it more lush and green.
Not everyone is experiencing full thresholds of all one insect alone. Some may have aphids, some may have spider mites, and some may have other insect issues that I haven’t seen myself. But if you group them together equaling an economic threshold, that becomes a sprayable level. In my area we are experiencing spider mite issues. Spider mites are typically only killed with an organophosphate type chemistry, which would consist of Lorsban or Cobalt. Spider mites lay eggs at a rapid pace and even after an application of Lorsban the eggs would hatch days later, and the issue wouldn’t go away. The key with spider mites is to catch it early and get it sprayed quickly. You will first see them start along the edges of fields near grassy areas and often when it is hot and dry.