Methods of conducting pheromone monitoring of the California scabbard

Traps for pheromone monitoring of the California scabbard are made of thick laminated paper or of thin cardboard laminated with plastic film on both sides. 12×18 cm-sized plates are cut, bent in half along a short axis and fixed to a wire. From the inside of the trap in the middle of the wire, a pheromone dispenser is attached with a paper clip. Dispensers with pheromone are stored in a refrigerator at a temperature of 3-5 ° C, packed in plastic bags. During the season, the dispenser is replaced once.

The pheromone of the Californian scale insect is highly species-specific and other types of scale insects, as a rule, are not attracted. Only during mass reproduction males of other families of isopterans can accidentally fall into traps.

To fix the attracted males, a thin layer of petroleum jelly with a melting point below 35 ° C or a non-drying entomological glue is applied to both sides of the inner surface.

In regions where climatic conditions are favorable for the propagation of California scale insects, it is necessary to constantly monitor its appearance using pheromone traps.

To this end, in fruit-bearing gardens, traps hang out uniformly at the rate of one trap per 2 ha. In young gardens or gardens located in elevated places where the wind facilitates the movement of males over long distances, it is enough to place one trap on 5 hectares. In nurseries, to determine a more accurate location of the pest site, one trap per 1 ha is hung up.

If scabs are found on separate traps in the garden, additional traps are hung to establish the boundaries of the micro-foci and quarantine measures are taken to eliminate them. Traps are placed on the periphery of the crown of trees at a height of 2 m from the surface of the soil.

Inspection of plantations in order to identify foci of the Californian scale insects with the help of pheromone traps should be carried out only during periods of mass flight of its males.

In the pest-free zone, pheromone traps are inspected with an interval of 7-10 days from the date of the alleged flight of the males. If a pest is detected in the traps, the paper part of the trap is removed, provided with a label indicating the place and time of operation of the trap and sent to the Rosselkhoznadzor regional department for phytosanitary surveillance to clarify the type.

The use of traps greatly helps to establish the timing of hatching of strollers. For this purpose, in the gardens infected with the pest, at the beginning of flowering, the apple trees hang traps at the rate of one per 3 hectares, for ease of maintenance – near the traps of the apple moth. Check the traps every three days before capture in the traps of the first males. According to the start date of their flight, hatching of strollers of the Californian scalefish is predicted, which begins 33–37 days after the capture of the first spring males, and hatching of strollers of the second generation — 38 days after the departure of the first males of the first summer generation.

Table 12

Recommended standards for placing traps when monitoring quarantine pests in phytosanitary risk zones *

Quarantine Pest Regulated

objects

The required number of traps during the examination
Asian Cotton Scoop – Spodoptera Shit Fabr.,

Egyptian Cotton Scoop – Spodoptera littora- lis Boisduval

Zone 3 km, vegetable, industrial crops 1 hunt. / 5 ga
Closed ground 1 hunt. / 1000 m 2
Barbel of the genus Anoplophora Forest and forest plantations in the 3 km zone 1 hunt. / 1ga
American White Butterfly – Hyphantria cunea Drury Forest decoration

plantations

1 hunt. / 5 ga
Eastern fruit

жорка – Grapholita molesta

Busck

Orchards 1 hunt. / 5 ga
Nurseries 1 hunt. / 2 ga

 

Quarantine Pest Regulated

objects

The required number of traps during the examination
Western Corn Bug – Diabrotica virgifera virgifera Leconte Corn (sown area) 1 hunt. / 5 ga
California scale insect – Quadraspidiotus perniciosus Comstock Orchards 1 hunt. / 2 ga,
Nurseries 1 hunt. / 1 ga
Personnel beetle – Trogoderma granarium Everts Warehouses of all types 1 hunt. / 25 square meters
Potato

mol – Phthorimaea opercu-

Lella Zel.

Potatoes

(landing)

1 hunt. / 5 ga
Potato stores 1 hunt. / 200 square meters
Unpaired silkworm – Limantria dispar L. Forest land 1 hunt. / 200 ga
Peach fruit tree – Carposina niponensis Walsingham Orchards,

wild

fruit

1 hunt. / 0.5-1 ga
Siberian silkworm – Dendrolimus sibiricus Chetverikov Forest land 1 hunt. / 200 ga
Mediterranean fruit fly – Ceratitis capitata Wied. Orchards, berry crops, including grapes 1 hunt. / 1 ga
Тутовая щитовка – Pseu- daulacaspis pentagona Targioni-Tozzetti Orchards and ornamental plantings 1 hunt / 2 ga,
Nurseries 1 hunt. / 1 ga
Apple Fly – Rhagolentis pomonella Walsh Fruit and berry plantations 1 hunt. / 0.5-1 ga
Tomato Moth – Tuta absoluta Meyrick Vegetables: solanaceae in closed ground 1 hunt. / 250 square meters
Solanum in the open ground 1 hunt. / 5ga

 

Quarantine Pest Regulated

objects

The required number of traps during the examination
Mountain Ringworm – Malacosoma paral- lela Staudinger Forest decoration

plantations

1 hunt. / 50 ga
Barbel kind Monohamus Forest land 1 hunt. / 200 ga

* According to the All-Russian Center for Plant Quarantine.

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