Both the pear tree and the apple tree are quite susceptible to contracting pests and diseases. Here we will show you the main pathologies that you can find, with a brief description and photograph for identification, as well as some examples of treatments with raw materials from the market.
PEAR TREE PESTS
Mites: being polyphagous, it is a pest that can appear on the pear tree. Dark, brown or deep red spots appear.
SAN JOSE LOUSE
This pest develops in late winter after hibernation. With the arrival of the heat (fortnight in May) the plague is visually observed. They cause damage to the fruits, reducing their commercialization. They present purplish spots on the leaves or on the veins of the leaves and reddish circular pits in fruits.
PEAR PSILA ( CACOPSYLLA PYRI )
It can be observed with a magnifying glass, and distinguished from other pests in that its adult has the shape of a lobster. In very hot areas (> 35ºC) it affects the pest, thus reducing its effect on the tree.
In addition, a sticky appearance is observed on the leaves, originating from the honeydew excreted by the nymphs.
The activity of the fruit fly begins in spring with the arrival of the heat.
The damage occurs in the fruit, by the bite of the female. It produces holes that turn from yellow to brown.
Treatment for fruit flies is applied 7-10 days with insecticide.
CARCOCAPSA ( CYDIA POMONELLA )
The carcocapsa usually measures between 1.5 and 2 cm, the male being smaller than the female. The damage produced in the pear tree consists of holes in the fruit, causing the destruction and non-commercialization of these.
PEAR TREE DISEASES
SPOTTED ( VENTURIA PYRINA )
The damage begins with the formation of spots on the olive green leaves, turning black over time. If the disease is severe, defoliation of the tree occurs. These spots also appear on the fruits, depreciating them commercially.
An example of application, for difenoconazole 25%, 20 cubic centimeters per 100 L of water, 3-5 applications in 15-day intervals.
STEMPHYLIUM ( STEMPHYLIUM VESICARIUM )
The damage caused by this disease is on leaves and fruits. The disease is detected by the drying of the leaves, a general weakening of the tree and a reduction in the size of the fruits. Also on fruits it can present necrosis.
Damage to the pear tree is presented with reddish spots on the leaves. Over time, they end up drying out and falling off. Dark colored spots form on the fruit, the result of necrosis.