Review of Horticulture Literature related to Pest Infestation of Plants and Trees

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REVIEW OF LITERATURE

Avidov (1970) mentioned that a total of 38 species of parasites and 10species of predator were found in Israel, associated with Aonidilla aurantii , Parlatoria pergandii, Coccus hesperidum, Sassetia olea and Ceroplastis floridensis

Martino (1982) in Italy stated that scale insects infesting citrus cultural were attacked by natural enemies such as Aphytis sp.

Merleir (1984) mentioned that ornamental maples, limes and chestnuts in Reims, France, jointly ifested by Eupulvinaria hydrageae and Pulvinaria regalis canard in the post few years. In observation on natural enemies of the scales, coccinellid larvae were found preying on the eggs and young larvae of P. regalis.Larvae of the dipterous predator Leucopis sp were found in ovisacs of E.hydrogeae.

Salem (1994) found that the activity of the ( Encyrtidae) parasitoid on Kilifia acuminata was scattered during the two studied years. The activity of this parasite on female was higher than immature stage, the lowest activity of (Encyrtidae) parasite was observed during mid July, August and during December.

Ofek et al (1997) in Israel stated that there were several identified natural enemies for Aonidiella orientalis and Aonidiella ourantii among them Aphytis linganesis was detected.

Kwais (1998) mentioned that the scale insect, Insulaspis pallidula was found with its parasite Aphytis lepidosaphes on zebda and dabsha varieties during May July and August in Faiym governorate. On the other hand Lindingaspis floridana and Aulacaspis tubercularis are found without parasite. In addition parlatoria olea was found parasitized by [ Aphytis moculicornis and Aphytis lingnansis ] in high and low infestation on zebda and hindy v...

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...as well as the effect of two weather factors on the insect activity were studied at El-Qanater El-kairia, Qaliobiya governorate, Egypt in 2001 / 02 and 2002 / 03. Results revealed that pre-adult and adult populations were peaked four times per year during May, July, September / October and November. The pest had annual overlapping generations, with the highest generating occurring during autumn in both studied years. The daily mean temperature was entirely under the optimum range of pre-adult and adult activities in the two years, whereas the daily mean relative humidity was within the optimum range of the pre-adult and adult activities in 2001 / 02 and entirely under the optimum range of the pre-adult and adult activities in 2002 / 03. The combined effect of the two weather factors on the pre-adult and adult activities was highly significant in both years.

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