Abstract
The systemic insecticides, Dasanit®, carbofuran (Furadan®), phorate (Thimet®), aldicarb (Temik®) and disulfoton (Di-Syston®) were applied in the planting furrow at 2–3 lb actual/acre for potato tuberworm (Phthorimaea operculella (Zeller)) control in Irish potato foliage. None of these compounds gave entirely satisfactory results. Dasanit was the best with slightly over 80% decrease in the number of mines and was followed closely by carbofuran; all treatments needed to be supplemented by foliage sprays for satisfactory tuberworm protection.
Azinphosmethyl (Guthion®) gave consistently outstanding results as a foliage spray at 0.5 lb/acre with over 99% tuberworm reduction. Other foliar-applied insecticides giving at least 98% tuberworm control included: Monitor®, monocrotophos (Azodrin®), phosphamidon, Orthene®, Torak®, methomyl (Lannate®) and Dursban® (all at 0.5 lb/acre) and Phosvel® (1 lb/acre).
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Additional information
Contribution from the Entomology Department, Virginia Truck and Ornamentals Research Station, Painter, Virginia. Paper No. 154, Journal Series.
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Hofmaster, R.N., Waterfield, R.L. Insecticide control of the potato tuberworm in late-crop potato foliage. American Potato Journal 49, 383–390 (1972). https://doi.org/10.1007/BF02864836
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DOI: https://doi.org/10.1007/BF02864836