Silage effluent (or run-off) is surplus water from the silage which carries soluble sugars and proteins as it flows out. Wilting the cut pasture will reduce or eliminate the amount of silage effluent that is produced (Figure 1) and increase the silage feed value.

Figure 1: Relationship between pasture drymatter content and drymatter and effluent losses2

The targets for pasture silage harvest drymatter are3:
Pit/stack silage: 25 - 30%
Baled silage: 30 - 35%


2Bastiman and Altmann, 1985. In Silage Science and Technology p 453.
3DairyNZ farmfact 1-46. What is high quality pasture silage?