Fundamentals of Applied Acarology by Manjit Singh Dhooria

Author:Manjit Singh Dhooria
Language: eng
Format: epub, pdf
Publisher: Springer Singapore, Singapore

12.2.8.2 Celery (Apium graveolens) and Parsley (Petroselinum crispum)

Celery is a biennial plant but often grown as an annual and grows best in temperate climates with mild or cool weather. Two-spotted spider mite (T. urticae, TSSM) sometimes develops rapidly during hot and dry weather. As a result of mite infestation, whitish stipplings may be found on the upper surface of leaves, while on lower leaf surfaces, too many mites and their webbings are commonly observed. TSSM occasionally appears as a minor pest, but sometimes TSSM are troublesome during the later part of the crop season when their presence on harvested product may prove troublesome for market purposes. Dry and dusty conditions may favour development of spider mites; water-stressed plants are more susceptible. Overhead irrigation may help alleviate mite problems. Avoid use of excessive nitrogen.

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