Weevil – Update
EnviroScience was back at Blue Lake checking on our weevils in mid-July . There was visual evidence of the weevils eating the Eurasion milfoil on both ends of the lake. The 2nd installment of weevils, approximately 10,000 per end, was also introduced to the lake in early July. EnviroScience gave us twice the amount of weevils this year as they had a lot left from their stocking program, for the same amount of money.
EnviroScience returned to the lake in early September and did a thorough survey of the lake for the summer. Jeff Townsend and Sue Ellen Dolan accompanied the two EnviroScience scientists and were pleasantly surprised to see the weevil hard at work. The west end appears to have a significant amount of weevil damage to the milfoil and was in much better shape than a year earlier. The east end showed some improvement ,especially in two areas where the weevil had made a visible impact. The east end having a denser population of milfoil will take at least 2 to 3 more years of eating on the milfoil to show real improvement. EnviroScience will give us a complete survey report some time in late October. BLIA will post it on it’s website www.bluelakeimprovement.org when we receive it. Click to read more …