Attraction ofTrichogramma platneri to eggs of some lepidopterous pests of avocado     

M. Wysoki  M. De Jong 《Phytoparasitica》1989,17(4):315-318

The attraction ofTrichogramma platneri Nagarkatti (Hymenoptera: Trichogrammatidae) to eggs of two lepidopterous avocado pests,Boarmia sel-enaria (Schiffermüller) (Geometridae) andCryptoblabes gnidiella (Millière) (Phycitidae), was evaluated in olfactometer tests. The mobility of the wasp as measured by a mobility index was 0.6 for males and 1.8 for females; the males had a lower mobility and a lower search capacity index than the females. Frozen and fresh youngB. selenaria eggs had the greatest attraction forT. platneri, which diminished with increasing age of the eggs. The eggs ofC. gnidiella were also attractive to the parasitoid. Contribution from the Agricultural Research Organization. No. 2704-E, 1989 series.  相似文献   

Phagostimulants enhancing the efficacy ofBacillus Thuringiensis formulations against the Giant Looper,Boarmia (Ascotis) Selenaria,in avocado     

J. Meisner  D. Hadar  M. Wysoki  I. Harpaz 《Phytoparasitica》1990,18(2):107-115

In both laboratory and field trials, as well as in semicommercial scale applications, the minimum concentration ofBacillus thuringiensis (B.t.) required to secure satisfactory larval mortality ofBoarmia selenaria could be halved, from 0.5% to 0.25%, by addition of 1% of the commercial phagostimulant Coax. Another phagostimulant product, Gustol, was inactive. Coax did not attract caterpillars from a distance. However, individual, Coax-treated spots on the avocado leaf surface were consumed by the larvae to a significantly greater extent than control. The same difference in palatability was recorded when the spots were treated with a mixture of Coax and aB.t. formulation. This explains, at least partially, the aforementioned advantageous effect of Coax in practical control of the looper byB.t.  相似文献   

Overwintering of the Japanese bayberry whitefly,parabemisia myricae,in Israel     

E. Swirski  Y. Izhar  M. Wysoki  D. Blumberg 《Phytoparasitica》1986,14(4):281-286

The Japanese bayberry whitefly,Parabemisia myricae (Kuwana), was discovered in Israel on citrus and avocado trees in 1978. In order to clarify its mode of overwintering, observations and counts were carried out during the winters of 1979/80, 1982/83 and 1983/84, with the following findings. Larvae and adults were detected on citrus and avocado trees throughout the winter; only females were found. The oviposition rate ofP. myricae in winter was low, and rose steeply in spring. The density of larvae on the lower side of leaves was higher than on the upper side. Substantial numbers of larvae survived the winter on avocado trees. Emergence of adults became intensified at the end of February, reached a peak in early March, and ceased at the end of March or beginning of April.  相似文献   

Laboratory studies with antifeedants against larvae of Boarmia (Ascotis) selenaria on alfalfa     

K. R. Simon Ascher  Nadia E. Nemny  Manes Wysoki  Leah Gur-Telzak 《Pest management science》1978,9(6):566-570

The antifeedant effect of five organotin compounds (fentin acetate, fentin hydroxide, fentin chloride, cyhexatin and fenbutatin oxide) and of three other compounds known to possess antifeeding activity (guazatine triacetate, 4′-chloroacetophenone isobutyrylhydrazone and thiram) was investigated by feeding treated alfalfa to larvae of Boarmia selenaria. The three fentins and cyhexatin were highly active at 0.1 g litre^?1, the order of activity at this concentration being fentin chloride > fentin hydroxide > fentin acetate ? cyhexatin, whereas the other compounds were practically inactive at either this or a somewhat higher concentration (0.5 g litre^?1). Guazatine triacetate had a concentration-independent antifeedant effect at much higher concentrations (5–20 g litre^?1).  相似文献   

A review of the pest management situation in mango agroecosystems     

J. E. Peña  A. I. Mohyuddin  M. Wysoki 《Phytoparasitica》1998,26(2):129-148

Integrated pest management programs for mango must be based on sampling and on economic thresholds, and must take into account the effects of cultural practices, horticultural sprays and disease control on pest and natural enemy interactions. An analysis of the mass of information available on the different mango pests,viz., fruit flies(Bactrocera sp.,Ceratitis sp.,Anastrepha sp.), mango seed weevil(Sternochetus mangiferae), thrips(Frankliniella spp.), gall midges(Procontarinia sp.), scales, mites and mealybugs is given, as well as different examples for future entomological research.  相似文献   

Evaluation of nine strains ofBacillus thuringiensis Berliner against the giant looper,Boarmia (Ascotis) selenaria Schiffermüller (Lepidoptera,Geometridae)     

Dr. M. Wysoki  Liisa Jarvinen 《Journal of pest science》1986,59(4):74-77

Nine isolates ofBacillus thuringiensis Berliner belonging to var.kenyae, var.aizawai and var.entomocidus, were bioassayed against 1st instar larvae ofBoarmia (Ascotis) selenaria Schiffermüller and compared withB. thuringiensis var.kurstaki, HD-1-S-1980. None were found to have a higher potency than HD-1-S-1980, which is used for commercial control of young larvae of this pest in avocado plantations in Israel.  相似文献   

Introduction into Israel ofTrichogramma platneri Nagarkatti,an egg parasite of Lepidoptera     

M. Wysoki  S. Renneh 《Phytoparasitica》1985,13(2):139-140

Trichogramma platneri Nagarkatti (Hymenoptera: Trichogrammatidae) was recently introduced into Israel to improve the control of two lepidopterous pests,Boarmia selenaria (Schiffermiiller) andCryptoblabes gnidiella (Millière). Laboratory tests showed thatT. platneri attacks the eggs of both species. A method of freezing the eggs of the host,Ephestia cautella (Walker), at -20°C and gradual defrosting, used in the large laboratory breedings of the parasites, is described briefly. In laboratory tests 68.5% of the frozenE. cautella eggs, after 2 months of storage, were parasitized, compared with 70.3% of the fresh eggs.  相似文献   

Chromatographic analysis of vitamin K 1 ; application to infant formula products     

J D Manes  H B Fluckiger  D L Schneider 《Journal of agricultural and food chemistry》1972,20(6):1130-1132

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Potency and effect ofBacillus thuringiensis preparations against larvae ofSpodoptera littoralis andBoarmia (Ascotis) selenaria     

A. Navon  M. Wysoki  Sara Keren 《Phytoparasitica》1983,11(1):3-11

The potency of two newBacillus thuringiensis (B.t.) preparations (coded ABG 6104 and ABG 6105) and of Dipel (B. thuringiensis var.kurstaki) was determined againstSpodoptera littoralis (Boisd.) 5th-instar larvae on a calcium-alginate diet. With this bioassay, the newB.t. products were more than twice as potent as Dipel. They were also 2–3 times more active than Dipel on alfalfa and cotton leaves in the laboratory. When applied in an alfalfa field at the rate of 312 mg/m², ABG 6104 and ABG 6105 caused 40% mortality of 5th-instar larvae and reduced the weight of the survivors to 30–40% of the control; only half of this activity was obtained with Dipel. On cotton, the activity of all theB. t. products was low. NeonateS. littoralis larvae were effectively controlled on avocado seedlings; however, there was high mortality also in the untreated controls. All threeB. t. preparations had a similar effect onBoarmia (Ascotis) selenaria Schiff. on avocado leaves in the laboratory. Addition of a chitinase enzyme did not increase the pathogenicity of the microbial preparations in the latter tests.  相似文献   

Insect pests of macadamia in Israel     

M Wysoki 《Phytoparasitica》1977,5(3):187-188

A survey of macadamia pests was made in Israel in 1975. A number of pests were found, but none was of economic importance.  相似文献