Plum trees and plum trees are generally quite hardy and productive plants, but like other stone fruits (peach, apricot, almond and cherry), these species can also be affected by diseases and insect pests. Some adversities are common to stone fruits, others are more specific, but the forms of prevention are similar and the treatments can always be administered with the various organic products currently available and with proven efficacy.
Let us now see in particular what are the pests that can attack the plum (Sino-Japanese plum) and plum (European plum) and how to biologically defend plants, preserving the balance of the agro-ecosystem and avoiding contamination, while legitimately betting on good, abundant and quality production.
It is not true that the two goals are mutually exclusive, on the contrary, they can be together, it is just that their joint achievement requires much more attention and punctuality than conventional management, in which products with high stopping power are used whenever the need arises. Too bad that these products often also kill useful or harmless insects, which is not good and not even practical in the long term.
The Funeral Cydia Is plum cydia , is a small butterfly similar in appearance to Cydia molesta, with greyish-brown blinkers and whitish streaks, and capable of reaching 2-3 generations per year. The damage caused by this insect occurs in the larval stage, which hibernates in cocoons protected between the barks. In the spring, the adults blink, mate and they lay their eggs in the small fruits that form . From the eggs hatch the larvae, which begin to live at the expense of the fruits, eating their meat, and the consequence is that many fruits fall and are lost.
Against this parasite preventive remedies are the placement of food traps like those of the type faucet trap , which provide a hook with a yellow cap, attractive in color, screwed to a bottle filled with good bait. At the end of the summer it is also useful wrap the logs with corrugated cardboard , in the grooves of which insects will take shelter for the winter. With this trick, you can catch a lot of them.
If the organic farming is extensive, i.e. at least 1 ha, it also makes sense to set up a defense by pheromone traps for sexual confusion. Finally, the most recommended product for carrying out the treatments is Bacillus thuringiensis kurstaki, particularly specific against this moth and others and harmless for other insects such as bees and bumblebees.