South Dakota producers may want to start scouting sunflowers earlier than usual this year. The Panhandle Research and Extension Center in western Nebraska has noted the early occurrence of sunflower rust on volunteer sunflower plants this spring.
While scouting this week we, noticed that there are large numbers of Lygus bugs present in Central South Dakota. Although these insects are generally not an issue for most crops, they can cause serious injury to field peas if pod feeding occurs.
First cutting is the most important and critical of the alfalfa growing season. A late start of this growing season will determine multiple things during this year’s production.
The first cutting of alfalfa is either done or underway in South Dakota, and we are starting to notice pea aphids in the fields. Although pea aphid populations can vary quite a bit from field to field it is important to monitor their populations to ensure that loss due to their feeding doesn’t occur.
Crown rust is the most devastating disease of oats in South Dakota. This disease can develop as early as the jointing stage and can lead to heavy grain yield loss in susceptible cultivars. The pathogen which causes crown rust, Puccinia coronata f. sp. avenae, survives on crop residue and on wild grasses but first must infect buckthorn plants before moving onto oats.
During the past week most of South Dakota has accumulated enough degree days (300-595 accumulated degree days) to now have alfalfa weevil larvae present.
It has been a slow start to the 2018 growing season, and alfalfa development is also behind schedule. One of the major insect pests of alfalfa is the alfalfa weevil.
As we move forward to a late spring, temperatures are warming up and alfalfa producers are having questions on how to access their alfalfa fields for winter injury.
Planning for the growing season this year has been a little different than in previous years. The winter season seemed to be longer than usual and has producers wondering when they would be able to access their fields.
Crop performance testing results are released annually through the activities of SDSU Extension and the South Dakota Agricultural Experiment Station at SDSU.