Pre-harvest interval close for some products

The pre-harvest interval is the number of days that must pass between the last application of a pesticide and cutting of the crop. Cutting is either swathing or straight cutting. From the end of flowering to physiological maturity usually takes about 25 days in Manitoba, 30 days in Alberta, with Saskatchewan in between. We will be within that window soon for some crops — and already in it for very early crops. Products with pre-harvest intervals of 30 days or more can no longer be applied on these early crops.

Pre-harvest interval for fungicides:

Astound — 35 days
Lance — 21 days
Proline — 36 days
Quadris — 30 days
Quash — 45 days
Serenade — 0 days
Vertisan — 21 days

Pre-harvest interval for insecticides:

Decis 5EC — 7 days
Lagon/Cygon 480-AG/Cygon 480 EC — 21 days
Lannate — 8 days
Lorsban/Citadel/Pyrinex/Nufos — 21 days
Malathion 500/85E — 7 days
Matador/Silencer — 7 days
Pounce/Perm-UP/Ambush — can only be applied prior to 6-leaf stage
Ripcord — 30 days
UP-Cyde — 30 days