b'How do aphids influence PVY? Studies in New Brunswick haveSpray oil frequently, at least once a week, at a rate of two litres shown:per acre or moreHigh aphid numbers can occur very early in the spring oftenStart spraying oil early, at 20 to 30 per cent emergence, and before the potato crop has emerged continue spraying until vine killSignificant numbers of aphids in these early flights can carry Combined mineral oil-insecticide sprays are best. Add PVY insecticides to the mineral oil spray at least two times early in The early and late peaks of aphid flights are mostly non- the seasonone time mid-season and two times late in the colonizing or unidentified species, the taste testers seasonThe flights of colonizing potato aphids peak in August Rotate insecticides with different modes of action. The mostHigh levels of green peach aphid, the most efficient PVYpromising insecticides are Lambda-cyhalothrin (Matador, vector, are observed at the end of season Silencer, Labamba), Deltamethrin (Decis, Concept) and Flonicamid (Beleaf)Aphids can transmit PVY in potato crops throughout the growingThe pyrethroid Decis when sprayed in combination with season. The levels in crops increase with:mineral oil shows similar effectiveness to Silencer at a similarThe length of time plants are growing in the field costThe length of time from planting until first foliar mineral oil/ Substituting the mixed pyrethroid-neonicotinoid Concept insecticide spray shows even greater PVY reduction, but at considerably higherLate top killing costPyrethroid insecticides are retained in leaves longer when The main factors that reduce the spread of PVY are the following: combined with mineral oil Plant clean/low PVY infected seed Minimize tractor traffic in field to reduce mechanical PVYPlant resistant varieties transmission and focus on rogueingAn ounce of prevention is worth a pound of cure! NEW RELEASE!NEW TECHOLOGYVERTICAL ADJUSTABLEROLL SIZERSFW is growing and developing new technology. The SFW Vertical Roll Sizer offers a perfect solution for high-volume demand in a smaller footprint. With a capacity of 120,000 lbs per hour and 6 programmable presets, the SFW new Vertical Roll Sizer offers you the best reliable sizer on the market. Engineered for extremely low maintenance, and less moving parts compared to conventional equipment. It is designed and produced for the 24/7 industry with industrial-engineered components.SPUDSMART.COM Spring 202345'