Spraying & safety
Spraying around rain
Timing fungicides so rain helps, not hurts.
Relevant stages: Green Tip, Tight Cluster, Petal Fall, Fruit Let.
Several SKUAST recommendations depend on rain.
- Green tip and tight cluster: Mancozeb before full-day rain, and skip if dry for 7 or more days.
- Petal fall and fruit let: fungicide before rains.
- Later stages: spray only if rain is forecast.
- Pink bud: spray if the weather is dry.
- Avoid spraying immediately after heavy rains in low-altitude areas, and avoid wet, hot conditions.
Protectant products need to be on the leaf before rain, and to dry first. Use the spray window to find a dry gap.
General guidance. Always read product labels and consult an agronomist for problems specific to your orchard.