This article provides information on new product registrations, label expansions, edits to Publication 360 and PMRA re-evaluations of pesticides used in vineyards. Some of the items have been captured in the 2019 Publication 360 Supplement while others are new since that publication.
Cormoran is a coformulation of the active ingredients of Assail (Group 4) and Rimon (Group 15). It is labelled on stone fruit for control of oriental fruit moth and plum curculio and suppression of cherry fruit fly. Under high pressure, it may provide only suppression of plum curculio. It should be applied in a minimum spray volume of 1000 L/ha to ensure adequate coverage. The restricted entry interval is 6 days for thinning and 12 hours for other activities and the pre-harvest interval is 7 days for all stone fruit. This product should not be rotated with Assail or Rimon.
Harvanta 50 SL is a Group 28 insecticide (Altacor), labeled on all stone fruit for control of oriental fruit moth, obliquebanded leafroller and spotted wing drosophila and suppression of plum curculio. The restricted entry period is 7 days and the preharvest interval is 7 days. This product should be rotated with insecticides other than Altacor or Exirel for resistance management.
Minecto Pro is a coformulation of the active ingredients of Agri-mek (Group 6) and Exirel (Group 28). It is labeled on pear for control of pear psylla, codling moth, oriental fruit moth, oblique banded leafroller, two-spotted spider mite, pear rust mite and plum curculio. The product requires application of 0.25-1% v/v spray oil in the spray mixture or 10-20 L of spray oil per hectare. The restricted entry interval is 12 hours and the pre-harvest interval is 28 days.
Oxidate 2.0 (hydrogen peroxide and peroxyacetic acid) is labeled for partial suppression of fire blight in pear. This product may be acceptable for organic production.
Parasol Flowable Fungicide is a new copper hydroxide product labeled as a dormant application for control of fire blight and blossom blast in pear, bacterial canker in tart and sweet cherry and peach leaf curl in peach and nectarine. The restricted entry period is 48 hours.
Versys (Group 9D, new insecticide group) is labeled for black cherry aphid in cherry and aphids in plum. It is labeled for green peach aphid in other crops but is not recommended for this pest in peach. The restricted entry period is 12 hours and the pre-harvest interval is 7 days.
XenTari WP (Group 11, Dipel, Bioprotec, Foray) is labeled for oblique banded leafroller in pear. It may also provide suppression of oriental fruit moth. The restricted entry period is 12 hours and the pre-harvest interval is 0 days. The recommendations for use are the same as for other Bt products.
Label expansions and changes
The Ambush 500EC label was expanded to include control of plum curculio in peach nectarine and plum.
The Delegate label has been expanded to include suppression of peach tree borer and lesser peach tree borer as a trunk spray in all stone fruit.
Envidor: final sale 2020; last farm use December 2023
The Kopa label has been expanded to include European red mite and two-spotted spider mite
Malathion 85E is now fully labeled for control of spotted wing drosophila in all stone fruit.
The TwinGuard Insecticide label was expanded to include control of black cherry aphid in sweet cherry.
The Up-Cyde 2.5 EC label was expanded to include oriental fruit moth on plum.
PMRA Pesticide Re-Evaluations
The Pesticide Act states all products must be re-evaluated on a 15-year rotation. PMRA reviews available scientific information, information provided by pesticide registrants, other federal or provincial departments and information published in scientific literature to make re-evaluation decisions. There are several components of re-evaluations including environmental impacts and worker and dietary exposure. The following re-evaluations have been completed or are proposed for tender fruit:
Up-Cyde, Mako and Nexter: all uses retained, increased downwind buffer zones to aquatic habitats and PPE requirements for applicators (refer to labels for details)
Products containing chlorothalonil (Bravo ZN, Echo 90DF): 2 spring applications to tart cherry for blossom blight, black knot, 2 spring for blossom blight and 1 dormant application for peach leaf curl in peach and nectarine. The maximum rates remain the same as the current label. The restricted entry interval for thinning peaches and nectarines is 11 days. The preharvest intervals remain the same – 60 days/shuck split for peach/nectarine and 40 days/shuck split for tart cherry. The last sale of the current labels is May 2020.
Actara 25WG, Admire 240 Flowable, Alias 240SC, Clutch 50WDG: PMRA final decision based on pollinator health: last sale of current label is April 2021; last farm use to be determined. This date may be altered (earlier) pending the outcome of the final aquatic invertebrates decision.
Ferbam and products containing thiram (Thiram, Granuflo-T): last farm use Dec 2021. Trunk applications of Scoot for rodent control will still be permitted.
Quintec: last farm use June 2021.
Rovral: last farm use June 2021.
Maestro, Supra Captan: all formulations to be in solupac; maximum 1 application at 4 kg product/ha (current label is 4.5 kg) for apricot, peach, nectarine, plum, cherries and one additional post-harvest application for cherries. The restricted entry interval is 29 days for hand thinning, 15 days for hand harvest and 1 day for all other activities, including machine harvest of tart cherries. For high-density pears (canopy width less than 2 m), up to 10 applications at 3 kg product per ha are allowed with restricted entry intervals of 15 days for hand thinning and harvest, 6 days for hand pruning and training and 2 days for all other activities. For standard pears (canopy width greater than 2 m) a maximum of 2 applications at 3 kg product per ha with restricted entry intervals of 24 days for hand thinning, 19 days for hand harvest, 4 days for hand pruning and training and 2 days for all other activities. When hand thinning is performed, make 1 application before thinning and 1 after thinning fruit. The last sale of the current label is May 2020, last farm use to be determined.
Ontario Fruit and Vegetable Growers Association, the Ontario Tender Fruit Growers and industry task force for captan are working with PMRA to address some of their concerns regarding these products to try to keep this valuable tool. Stay tuned!
While every attempt has been made to ensure that the information regarding ‘last dates of sale’ and ‘last dates of farm use’ is accurate and up-to-date, it is the responsibility of the user to confirm with the registrants of pest control products that the dates are correct and current.