Heavy rains are expected and they bring fruit disease! Prevent this infection in plums!

Bony fruit species are also susceptible to the causative agent of leaf hollowness (Stigmina carpophila), for which there are favorable conditions for infection in conditions of frequent precipitation.

PISG warns! Now is the time to react and destroy this pest!

In the following period, precipitation is forecast, and in the orchards of the mentioned bony species that have formed leaf mass, ie which are in the phenophase of overgrowth of PIS Vojvodina, it is recommended to use one of the fungicides Merpan 50 WP or captan 50 WP or Capi Ili Metod 480 sc (am kaptan ) 0.2-0.3%.

Leaf porosity is a disease that attacks all types of stone fruit. In addition to plum attacks and peaches, nectarines, cherries, sour cherries, apricots. It attacks the leaf, fruit and young. On the leaves we find round reddish-brown spots, usually bordered by a darker edge. The inner part of the spot “falls out” – dead tissue and so the leaf becomes hollow. Heavily infected leaves fall off, in some varieties even before they become more hollow, so the fruit in the case of a stronger attack remains almost without leaves, says the expert for plant protection of the Agricultural Expert Service of Prokuplje, Marinko Jovicic.

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The skin of the fruit peels off

The fruits have round reddish-brown spots that are slightly concave. With a large number of spots, the fruit is deformed and drops of resin are secreted, due to which the fruit loses its market value. Also, the skin on the fruit can peel off. Such a fruit attacks monilia more strongly.

The basic spraying is copper-based preparations in the fall, until the buds swell. But that is not enough, so it is necessary to do three to four more sprays with organic fungicides. The first immediately after flowering, the second two to three weeks after that and the third three weeks after the previous one. This is average and depends on precipitation as well as the year. Of course, after leafing, copper is no longer used because it is phytotoxic, but preparations based on dithianone, propineb, captan…

In a very rainy year, it is difficult to stop the disease completely, only if it has moved in for now, because then its infectious potential is high. One should try to spray before the rain or if the weather allows at the beginning of the rain, advises the expert PSSS Prokuplje.


Source: Bolja Zemlja by www.boljazemlja.com.

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