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THE FRIT FLY AND ALLIED STEM‐BORING DIPTERA IN WINTER WHEAT AND HOST GRASSES
Author(s) -
JEPSON W. F.,
HEARD A. J.
Publication year - 1959
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1959.tb02529.x
Subject(s) - biology , lolium perenne , dactylis glomerata , larva , festuca rubra , infestation , festuca arundinacea , agronomy , botany , poa pratensis , endophyte , poaceae , horticulture
Sampling for stem‐boring larvae was undertaken in 1954‐56 on ley plots of Lolium perenne, Dactylis glomerata, Festuca arundinacea, F. rubra, Agrostis tenuis and Poa pratensis in randomized experiments at Hurley, Berks. The samples showed infestations by dipterous larvae, mainly species of Oscinella, Meromyza and Opomyza. The larvae showed preferences for specific grass hosts. More larvae were found where plots had been grazed throughout the season than where an early hay cut had preceded grazing. The total numbers of larvae varied between o and 688 per sq.yd. in November. The larval populations of the leys were reflected in the populations in winter wheat which followed the plough‐up of the leys. Populations of up to sixty‐five larvae per sq.yd., mostly species of Oscinella , were found in the wheat in March. In 1956 a heavy larval infestation was associated with the death of considerable numbers of wheat plants.