Efficient use of prohexadione-Ca in pome fruits

摘要

Prohexadione-Ca is a new, multi-functional plant bioregulator for use in pome fruits. In addition to regulating vegetative growth and improving fruit set, the compound reduces the incidence of shoot fire blight and other diseases. Complete absorptionof the active ingredient is of great importance for the efficient use of products containing prohexadione-Ca. This can be advanced by using calcium-binding and acidifying adjuvants and by taking care that a long-lasting liquid film remains on treated shoots. Intensity of shoot growth should be under control from its beginning with dosages, which have to be adjusted according to expected shoot vigour.