scholarly journals in two plots of apple of golden Dorset varietyin the region of Draa Ben Khedda and golden Delicious in the Sidi Naamane region (Algeria)

2018 ◽  
Vol 19 (3) ◽  
pp. 330-342
Author(s):  
Dyhia Guermah ◽  
◽  
Ferroudja Medjdoub-Bensaad ◽  
Keyword(s):  
Life Cycle ◽  
Chemical Control ◽  
Temporal Relationship ◽  
Cydia Pomonella ◽  
Codling Moth ◽  
Apple Orchards ◽  
Golden Delicious ◽  
Two Generations ◽  
Spatio Temporal ◽  
Considerable Damage

Codling moth Cydia pomonella L. is a bio-aggressor that causes considerable damage in apple orchards. In Algeria, in the region of Ain-Touta, the damage caused by this pest reached 82.7% in 1998. Chemical control is most often used to repress this micro-Lepidoptere.The knowledge of the life cycle of the species and its spatio-temporal relationship with its host plant is essential in order to consider an appropriate fight against this pest. Our study focused on the bio-ecology of codling mothin two apple orchards, planted with the varieties of Dorset golden and Golden delicious, in regions of Draa Ben Khedda and Sidi Naâmanein Tizi-Ouzou wilaya (Algeria).The eggs enumeration of this micro-Lepidoptera confirms the existence of two generations in Draa Ben Khedda and three generations in Sidi Naamane.The rate of infestation caused by larvae on the fruits on trees reached a percentage of 4.6% in the Dorset golden plot, and 5.3% on the fruits fallen on the ground. In the Golden Delicious plot, the attacks on fruits present on the trees reached a percentage equal to 17.2%, whereas these attacks reached a level of 20.0% on the fruits fallen on the ground.

scholarly journals Monitoring of Codling Moth (Cydia Pomonella L.) in Apple Orchards Using Two Methods

2010 ◽  
Vol 50 (2) ◽  
pp. 220-223 ◽  
Author(s):  
Izabela Kot
Keyword(s):  
First Generation ◽  
Cydia Pomonella ◽  
Codling Moth ◽  
Pheromone Traps ◽  
Apple Orchards ◽  
Different Types ◽  
Two Generations ◽  
Sum Of Effective Temperatures ◽  
The Mean ◽  
Effective Temperatures

Monitoring of Codling Moth (Cydia Pomonella L.) in Apple Orchards Using Two MethodsThe present studies were conducted in 1999-2001 in three apple orchards differing from each other by the system of cultivation, the type of agricultural treatments and chemical control of pests. Their purpose was to monitor codling moth (Cydia pomonellaL.) in different types of apple orchards using pheromone traps, finding out the relation between the occurrence of moths and the sum of effective temperatures as well as determining the number of wintering caterpillars of this species with the use of bands of corrugated paper. The analysis of male flight of codling moth on the basis of pheromone traps makes it possible to state the occurrence of two generations in each studied year. The maximum population of the first generation was observed in the second or third ten days of June, while that of the second generation in the first ten days of August. The moths flight began when the sum of effective temperatures was 109.2-145.2°C, and the mean diurnal temperature was 12.3-17.2°C.

Exclusion netting may alter reproduction of the codling moth (Cydia pomonella) and prevent associated fruit damage to apple orchards

2012 ◽  
Vol 145 (2) ◽  
pp. 134-142 ◽  
Author(s):  
Benoit Sauphanor ◽  
Guilhem Severac ◽  
Sandrine Maugin ◽  
Jean François Toubon ◽  
Yvan Capowiez
Keyword(s):  
Cydia Pomonella ◽  
Codling Moth ◽  
Apple Orchards ◽  
Fruit Damage

CODLING MOTH: A PILOT PROGRAM OF CONTROL BY STERILE INSECT RELEASE IN BRITISH COLUMBIA

1982 ◽  
Vol 114 (4) ◽  
pp. 363-376 ◽  
Author(s):  
M. D. Proverbs ◽  
J. R. Newton ◽  
C. J. Campbell
Keyword(s):  
Chemical Control ◽  
Cydia Pomonella ◽  
Codling Moth ◽  
Important Change ◽  
Control Measures ◽  
Wild Populations ◽  
Economic Threshold ◽  
Moth Population ◽  
Sex Pheromone Traps ◽  
Sterile Insect Release

AbstractCodling moth, Cydia pomonella (L.), control by sterile insect release (SIR) was assessed in 320–526 ha of apples and pears in the Similkameen Valley, B.C., from 1976 to 1978. In preparation for SIR, the moth population was first reduced to low numbers by removal of neglected trees in 1972 and by chemical sprays in 1975. Sterile (35 krad) male and female moths were released in each orchard 2 or 3 times weekly from 1 May until early September. A total of 23,600 sterile moths/ha was released in 1976, 36,500 in 1977, and 31,800 in 1978. Populations of sterile (marked) and wild moths were monitored by sex pheromone traps, and damage was assessed by fruit examination at harvest. Control was very good except for a few orchards in which overwintered populations were too high to achieve adequate overflooding with sterile moths. Damage exceeded the economic threshold (0.5%) in only 1 of 86 treated orchards in 1976, in 6 of 193 orchards in 1977, and in 0 of 157 orchards in 1978. Results in 32 orchards showed that when wild populations are brought close to extinction all codling moth control measures can be omitted for 2 or more years depending on degree of orchard isolation. Omission of codling moth sprays from 1976 to 1978 did not result in any important change in population levels of other apple pests. Cost of control by SIR was ca. $225/ha per year vs. ca. $95 for chemical control.

scholarly journals Assessment of control strategies against Cydia pomonella (L.) in Morocco

2016 ◽  
Vol 56 (1) ◽  
pp. 82-88 ◽  
Author(s):  
Salma El Iraqui ◽  
M’hamed Hmimina
Keyword(s):  
Chemical Control ◽  
Control Strategies ◽  
Cydia Pomonella ◽  
Codling Moth ◽  
Average Frequency ◽  
Cross Resistance ◽  
Moth Population ◽  
Action Threshold ◽  
Two Parameters ◽  
Neonate Larvae

Abstract The codling moth, Cydia pomonella (L.), is the key pest of apple production worldwide. In Morocco, there is a sustainable presence of codling moth causing considerable damage in apple orchards despite frequent applications of broad spectrum insecticides. For 12 years, sexual trapping and chemical control were performed and the development of the codling moth population was analysed in an orchard which was in the region of Azrou. The efficacy of some insecticides (azinphos-methyl, chlorpyriphos-ethyl, diflubenzuron, thiacloprid, methoxyfenozide, spinosad, and deltamethrin) was also evaluated on neonate larvae and compared with a laboratory sensitive strain. This procedure was done to assess an eventual resistance in Moroccan populations. The action threshold was usually exceeded, leading to an intensive chemical control, with an average frequency of 9 to 13 days. The chemical control was done according to the action persistence time of the insecticides and the trap captures. However, those two parameters are compromised in Moroccan conditions because of the high summer temperatures which disrupt the action of insecticides and exacerbate populations. The pheromone traps may become ineffective and useless. Neonate larvae were resistant to five insecticides out of seven. Such results suggest the presence of a cross resistance in local strains. Overall, the insect resistance, the functioning of the sexual traps, and some insecticides properties (persistence action, pre-harvest interval) are the key factors that could explain the failure to control these moths under Moroccan conditions.

scholarly journals Prototype Spatio-temporal Predictive System of pest development of the codling moth, Cydia pomonella, in Kazakhstan

2020 ◽  
Vol 13 (1) ◽  
pp. 1-12
Author(s):  
A. Afonin ◽  
B. Kopzhassarov ◽  
E. Milyutina ◽  
E. Kazakov ◽  
A. Sarbassova ◽  
...  
Keyword(s):  
Land Surface ◽  
Cydia Pomonella ◽  
Codling Moth ◽  
Moth Population ◽  
Development Stages ◽  
In Situ Data ◽  
Weather Stations ◽  
Spatio Temporal ◽  
Accumulated Degree Days

SummaryA prototype for pest development stages forecasting is developed in Kazakhstan exploiting data from the geoinformation technologies and using codling moth as a model pest in apples. The basic methodology involved operational thermal map retrieving based on MODIS land surface temperature products and weather stations data, their recalculation into accumulated degree days maps and then into maps of the phases of the codling moth population dynamics. The validation of the predicted dates of the development stages according to the in-situ data gathered in the apple orchards showed a good predictivity of the forecast maps. Predictivity of the prototype can be improved by using daily satellite sensor datasets and their calibration with data received from a network of weather stations installed in the orchards.

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