EM Previsan S, EM leaf film

With Microferm and Cera Boost: the manufacturer's recipe mixes 1 L of Microferm, 1 L of Previsan S and 100 g of Cera Boost per 100 L of water, from April to September. Microferm is also used on its own at the start and end of the season, according to the schedule on our product page.

Ideally use rainwater or well water, which is low in chlorine, and do not mix Previsan S with chemical plant protection products, as these would reduce the activity of the micro-organisms.

No, Previsan S is not a plant protection product: it does not replace a treatment against a disease or pest. It is a preparation of EM micro-organisms with a plant-based binder, which helps the EM to adhere to leaves, including waxy ones. If you have a problem with your plants, seek advice from a professional.

Dilute 1 L of Previsan S in 100 L of water. The manufacturer suggests a complete solution of 1 L of Microferm, 1 L of Previsan S and 100 g of Cera Boost per 100 L of water, applied at a rate of 100 to 150 L of solution per hectare. For targeted application, the product sheet states 1 L per hectare. Increase the frequency of applications rather than the dose.

The manufacturer suggests this schedule:

• March–April: 2 to 3 applications of Microferm alone in damp weather (around 10 L/ha per application);
• April–September: 8 to 10 applications of the Microferm + Previsan S + Cera Boost solution;
• October–November: 3 applications of Microferm during leaf fall.

Ideally spray in dry weather, when there is dew.