Gout Fly

Gout Fly

 

(Chlorops pumilionis), an insect of the family Chloropidae. The body is three to five mm long; it is light yellow and has black stripes on the back. The eyes are bright green. The gout fly is found in Europe and Asia (Siberia, the Far East). It does damage to barley, wheat, rye, and sometimes oats, as well as to wild grains. In the USSR it does the most damage in moist regions of the nonchernozem belt.

There are two generations a year. The flies of the first generation deposit eggs on the leaves of spring wheat and barley. The larvae gnaw grooves in the spike stalk from the spike to the first node and pupate in a pseudococoon in the upper internode. The flies of the second generation deposit eggs on the leaves of winter and wild grains; the larvae feed and hibernate inside the stalks, and in the spring they pupate. The stalks of damaged plants are thickened, and the leaves are broadened and slightly corrugated.

Protective measures include early sowings of spring grain and optimal sowings of winter grain, selecting grain varieties with a short ear-formation stage, using fertilizers that accelerate the passage of this critical phase, and treating the crop with dipterex at the time when the flies are in the air.

REFERENCES

Beliaev, I. M. Zashchita zernovykh kul’tur ot vreditelei. Moscow, 1965.

I. M. BELIAEV

References in periodicals archive ?
Gout fly is becoming more common with the earlier sowing of winter cereals, and although crops attacked in the autumn generally show little yield loss, those attacked in the spring can suffer substantial damage.
The new HGCA topic sheet investigates the need for, and the efficacy of, gout fly control.
However, additional insecticide spray treatments in the autumn aimed at gout fly may harm beneficial gout fly predators and parasites.
This reduces the autumn gout fly populations, minimises the impact on beneficials and predators and reduces the threat posed by the spring generation.
To establish the effect of gout fly infestation on yield and optimum treatment timings, HGCA-funded trials were conducted on wheat crops at high risk.
AS herbicide-resistant ryegrass and gout fly spreads, Ormskirk arable producer Barry Rimmer has adopted new growing strategies.
THIS autumn has again seen an increase in the gout fly population with numbers in most places at or above the levels seen last year.
In Home Grown Cereals Authority-funded trials as many as 50pc of plants have been found to be infected with gout fly eggs.
There has been very little recent research on gout fly so these trials will provide important new independent information,'' said Roger Williams, HGCA's research manager.