APFROS AS A POST FROST COMPOUND FOR APRICOT VARIETIES

APFROS as a regenerating compound suitable for moderating the effect of late frosts was discovered by us between 1977 and 1981. This compound consists of four components in powder form.

The post-frost treatment can diminish frost damage in apricot trees.
The positive effects were demonstrated in six cultivars of apricot, they were tested with three compounds.
The "M"-type is not effective, the "G"-type is very effective, but very expensive, too.
The "K"-type sprays are the most rewarding because there is 23.2% regenerational effect and the cost of the sprays is only equal to the price of 20 kg crops of apricot.

Success of APFROS-treatment ("K"-type) depends on the degree of cooling variety, rootstock and term between frost’s and spray’s date.
This method is expanding in Hungarian apricot orchards.

VIII International Symposium on Apricot Culture and Decline

D. Surányi

https://doi.org/10.17660/ActaHortic.1986.192.12