It has been tested on potatoes, radishes and cucumbers. In addition, repeated drench applications work well on bedding plants, potted flowers and greenhouse tomatoes. In some cases, the production schedule or fertility management needed to be adjusted to accommodate the increased growth. Related forms of this fungus are effective on root rot in raspberries and on gray mold in strawberries. In the field, we have seen responses when yield-reducing conditions were acting by not allowing the roots to use the full soil resource.
Examples are early planting or harvest, moderate nitrogen fertilizer, and low plant population.
In all these situations, greater root growth has obvious value. However, Trichoderma did not work if the field was flooded or crusted because both roots and fungi need air to grow. However, there are exceptions. T-22 does not work if the field is flooded or crusted because both roots and fungi need air to grow. Also, it was not possible to obtain consistent colonization by growing the inoculum on the roots of an overwintering rye crop.