The Value of Christmas Trees

"...there is no reason why the joy associated with the Christmas evergreen may not be a means of arousing in the minds of children an appreciation of the beauty and usefulness of trees; and keen appreciation of the beauty and usefulness of trees is a long stop toward the will to plant and care for them (Arthur Sowder, US Forest Service, 1949)."

Monday, April 5, 2010

Twig Aphids

SUMMARY: Twig aphid hatch is at about 86%.

Jerry Moody and I applied Movento with different adjuvants today. Remember that Movonto is the systemic that needs a good penetrant to get into the foliage. The problem is that several we used last year caused needle burn. Also, we didn't get great twig aphid control because we didn't put it out early enough.

Well, we got it out early enough this year! We tried Movento at the full 10 oz/acre rate either alone or with the following adjuvants: horticultural oil, Eco-Tec, ammonium sulfate, NIS (80/20), Liberate, or Phase.

I checked the twig aphid population at the field site, and there were plenty of aphids -- approximately 1.4 eggs per shoot. I estimated that there was about 86% hatch. There are several 2nd instar aphids. So, you can start scouting for twig aphids now, and certainly by next Monday, you can easily scout for twig aphids.

I think we put in a good study. I'll let you know the results come mid-May.

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