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Studies on occurrence and harmfulness of celery fly Philophylla heraclei L. on Sosnowski's hogweed Heracleum sosnowskyi Manden

100%

Wrzesinska D.

Journal of Plant Protection Research

2004

tom 44

nr 3

267-272

Studies on occurrence and harmfulness of celery fly on Sosnowski’s hogweed plants were performed in 1999–2002 in three plots at Minikowo, Mochełek and Topolno. At Mochełek, Minikowo and Topolno 40.65, 39.42 and 32.14% ofleaves, respectively were occupied by generation I ofthe fly while 14.8, 18.12 and 10%, respectively by the generation II. Most mines were caused by generation I in 2000 and 2002 at Minikowo and Mochełek. Generation II was characterized by a low population density in all plots.

Ograniczanie wyników

1 Journal of Plant Protection Research

1 Wrzesinska D.

1 2004

Wyniki wyszukiwania

Studies on occurrence and harmfulness of celery fly Philophylla heraclei L. on Sosnowski's hogweed Heracleum sosnowskyi Manden