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Damage to the oat panicle by the frit fly

Author:
RICHES, JOAN
Source:
Entomologia experimentalis et applicata 1960 v.3 no.3 pp. 173-184
ISSN:
0013-8703
Subject:
Avena sativa, DDT (pesticide), Oscinella frit, oats, panicles, plant density, spikelets, spraying
Abstract:
About 2,000 panicles (60,000 spikelets) of known bursting date from small plots of oats were dissected in detail. It is noted that spraying young oat plants with DDT against first generation attack also reduces panicle attack. The spraying causes physical differences between the sprayed and the unsprayed areas -- namely spraying gives a higher plant density and uniformity of panicle bursting date. The liability of main grain rather than a bosom grain to be attacked is noted at different levels of overall attack. Blindness of oats is discussed, and data are given to support the theory that one type of blindness is due to early frit fly attack on the immature grain.
Agid:
72063