The graph shows the daily results in the trial . Lupinosis Toxins from the fungus Phomopsis leptostromiformis growing on lupin stems cause lupinosis in sheep. Bare areas in a paddock, even if small, show that sheep have eaten enough stem material to increase their risk of getting lupinosis. The onset of lupinosis depends on how much toxin has been formed by the fungus and how much stubble is eaten. Soil erosion Lupins are usually grown on light soils, which are prone to erosion.
Hoof action breaks the surface crust and makes the area prone to wind and water erosion.
The greater the grazing intensity, the more damage is done. Sheep may have to be moved to another paddock, because of lupinosis or solid erosion, before they use this high quality feed. Nutrient concentration Sheep redistribute plant nutrients in a paddock, concentration them in camping areas. Long term soil fertility and pasture composition of the paddock can be affected. When the camp is close to a dam, manure fouling the water is another problem, especially when the water level in the dam is low.