Blog Archives

Ideal Spring for “Hopperburn” on Alfalfa

Potato leafhopper (PLH) is a key pest of spring-seeded alfalfa. Small size makes PLH an easily overlooked, but costly, pest. Top pest management priority should go to spring-seeded stands. The recommended 70 to 90 day growth period before first harvest

Posted in Forages

Alfalfa Weevil Season Running Behind 2017 Pace

Degreeday (dd) accumulations provide the best way to estimate progress of the alfalfa weevil season.  Totals from January 1 through March 31 for 2017 and 2018 can be seen in the table below. The relatively cooler winter and spring for

Posted in Forages

Alfalfa Weevils Are Hardy

The recent snow and cold should have little effect on developing alfalfa weevil populations. Temperatures must drop below minus 7o to minus 10o F to be lethal to eggs deposited in plant stems. Small larvae are killed by temperatures of

Posted in Forages

Be Ready for the Alfalfa Weevil!

Alfalfa weevil is the key pest of the first cutting. Populations have been above normal over much of the state during the past 2 years, so it is important to be watchful this spring. High populations may last for 2

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Sugarcane Aphid Detected on Sweet Sorghum

This past week, sugarcane aphid was detected and confirmed infesting sweet sorghum in Monroe County. The next day, we detected it in Fayette County on sweet sorghum as well. These are the first confirmed detections of 2017 and are a

Posted in Forages, Grains

Alfalfa Weevils – Now What?

The 2017 alfalfa weevil population is winding down, but some are taking their last bites before leaving fields. The few late-developing larvae, along with newly emerged adults, can feed on stems, crowns, and shoots produced after harvest. Surviving larvae may

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Alfalfa Weevil – The Next Step

Alfalfa weevils have been very damaging in some fields this year (Figure 1). While Individual larvae feed for about 3 weeks, a wide window for egg hatch this year has resulted in an extended season. Unfortunately, additional damage is still

Posted in Forages