Portal de Cartagena
www.portaldecartagena.com
Comprehensive treatments applied by the Service Gardens Department of Planning and Infrastructure of the City of Cartagena, directed by Francisco Espejo, managed to reduce from 2 to 6 per c ent death of infected red palm weevil in the Historic Center City, where the largest number is placed copies.
The treatments have been applied continuously every three months and include all remedies, mechanical and fitonasinarios recommended by the General Directorate of Plant Protection.
It is during this summer that it is carrying out pruning dry palms and withdrawal dates to avoid falling street, is taking advantage and other times to apply these remedies in affected individuals, which are a large part of them.
In Cartagena city and neighborhoods are about 3,900 palms.
The most important varieties are the canary (778), the date and Washingtonia 1,246 (1,829).
Copies of Canary Island date palm are the most affected, followed by the date palm;
while the Washingtonia, which until now had been spared the plague, are beginning to isolated cases detected.
During pruning and sanitation in the main areas, it is used to closely inspect each of the copies and submit to comprehensive fumigation treatments, removal of infected parts and injection products.
KEY AREAS
This areas are the axis of the port where esisten Washingtonia 358, 232 and 34 canary date palms;
Real street with 141 date palms;
Alameda de San Antón, with 107 date palms and Cultural Center Luzzy Ramón Alonso, where 31 Washingtonia.
Fumigation of these specimens with plant protection products is done throughout the year, every two or three months, and is different depending on whether or not it is infested palm tree.
Sanitation pruning and shock treatments are also performed in cases in which an active presence of weevil is detected.
It consists of the mechanical removal of infected parts to destroy the insect in all its forms, without touching the terminal bud.
Depending on the degree of infection are eliminated varying number of palms trying to preserve the maximum guarantee of success, because with time and care appropriate palm tree becomes green again but this time without the presence of plague.
DISMINUCIÃ "PÃ ‰ N OF LOSSES
With holistic treatments carried out, the loss of the specimens has decreased significantly.
So in the Historic Center, where more individuals per square meter of green space there, in the last year have lost about 1-2 percent of palm trees while in previous years the losses were 5 to 6 percent .
Referring to other areas of Cartagena palm losses so far this year is around 3 percent.
Losses in 2013 were 5 percent, while in 2012 they were close to 7 percent.
It is important to note that the weevil does not distinguish public and private palm trees and numerous cases of public palms, after great efforts by the administration to eradicate these insects are reinfected by private palms absent any treatment to combat plague, so awareness is important for individuals.
THE PLAGUE PICUDO
The red palm weevil, Rhynchophorus ferrugineus Olivier, is currently one of the most damaging i for palms in the world nsects, generally causing the death of the tree.
It is native to tropical regions of Southeast Asia and Polynesia, its expansion began 25 years ago attacking date palms of the countries of South Asia, Arabian Peninsula and Iran.
It was introduced into North Africa through Egypt in 1993, continuing its expansion to European countries, Italy, France, Portugal and Spain.
It is believed that our country came in 1995 in Almuñecar (Granada).
CARTAGENA, SINCE 2006
In the Mediterranean area the first cases occurred in 2004 in Valencia, coming to our region in 2005 and Cartagena in 2006, spreading throughout the city until today, currently having a very high population levels.
The Rhynchophorus ferrugineus Olivier, lives and feeds inside the palms, a condition that makes it difficult to detect its presence with a simple visual inspection.
Have complete metamorphosis and also can find the four different stages coexist simultaneously: egg, larva, pupa and adult.
The inside of the palm gives protection and a strong adaptability to different geographical areas with different climatic conditions, which influence the development periods of the phases of their life cycle.
It is an insect with large reproductive capacity as it requires only 3-4 months to develop all phases of their life cycle.
This means that you can have at least three generations per year.
Females emerge with fertilized eggs which makes them potentially colonizing new palms.
The coming generation will end with palm tree and will repeat the destructive cycle of the insect.
The adult is dispersed within a given area flying or walking, but once established in a palm prefers the latter.
The long-distance dispersal is through trade or movement of contaminated plant material.
Source: Ayuntamiento de Cartagena
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