Nantucket Pine Tip Moth Spray Window Approaching


Peak flight is either here or will be soon on Nantucket Pine Tip Moth (NPTM).

The weather here has been 3 weeks behind normal (apricot just bloomed last week) so I thought that tip moth would be delayed too. But with 80 degree weather they are actually 3 weeks ahead of schedule on emergence compared to last year here in the Wichita area

Willy Goevert of 4C Christmastree Farm has been monitoring NPTM traps for the past 20 years. He reports catches of 34 moths on April 3, 7 on the 4th and 36 on the 5th. This compares to 16 moths on April 16 and 35 moths on May 3 last year.

Long Term observations indicate that peak flight and peak bloom of Snowdrift Crabapple is usually within a couple of days of each other. The ‘Snowdrift’ in the Sedgwick County Extension Arboretum was at the pink puffy bud stage on April 5 and should be in full bloom by Wednesday the 7th (if hot weather holds).

Good control of NPTM is timed at 7-10 days following peak catch on the first generation. Willy is considering applying his first generation application on the 10th. I think this could be extended through the 17th.

Editor’s Note: A number of products are available for control including lambda-cyhalothrin (Scimitar, Spectracide Triazicide, Bonide Caterpillar Killer) and acephate (Orthene). Spinosad is an effective organic control (Conserve; Fertilome Borer, Bagworm, Leaf Miner and Tent Caterpillar Spray; Captain Jack’s Dead Bug Brew).

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