Symptomathology

Kind of palm more frequent stricken in Italy by the Killer insect are:
Phoenix canariensis 
Phoenix dactylifera 
Phoenix roebelenii 
Chamaerops spp 
Washingtonia spp

I° stadium
Level of light infestation: the stricken leaves remain green,  those of the vegetative apex result nibbled.

II° stadium

Level of middle infestation: the stricken leaves show signs of withering and the vegetative apex is flattened, causing an asymmetry of the top of the plant.

III/ IV stadium

Intense level of infestation: the head of hair shows signs of collapse a strong asymmetry and withering of leaf are notable

V/ VI  stadium

Level of serious infestation: the head is completely collapsed the plant it assumes the characteristic form of umbrella

Red Palm Weevel Symptomathology on Phoenix dactilifera in Arabian Countries

In the warm countries the attack of the Red Weevel is underlined with the attack to the trunk under the capital. It is difficult to recognize the holes of penetration and the treatment is prevented becouse the vases are interrupted and the product can not be moved.

The attack on the radical apparatus is underlined with the spillage of creamy white liquid that becomes brown by oxidation. It is characteristic the unpleasant odor of fermentation.

Statistic testing results of the Dr. Nabawy Metwaly method in Arabic Country

Statistic testing results of the Dr. Nabawy Metwaly method in Italy