S. Greenberg's research while affiliated with Agricultural Research Organization ARO and other places

Publications (20)

Article
The effects of dispenser type, pheromone dose in the dispenser, aging of dispenser in the field, and trap type on trapping efficiency of males of the European vine moth,Lobesia botrana Den. et Schiff. (Lepidoptera: Tortricidae), were investigated. LB Pherocon caps and locally manufactured septa were equally effective in attracting males to traps. W...
Article
The effects of ratio between sex pheromone components, pheromone dose in the dispenser, aging of dispenser in the field, and trap type on trapping efficiency of males of the peach twig borer,Anarsia lineatella Zeller (Lepidoptera: Gelechiidae), were investigated. To attract males, the optimal ratio between pheromonal components in a binary blend co...
Article
The effects of dispenser type, dispenser aging in the field, pheromone dose in the dispenser and trap type on trapping efficiency of codling moth,Cydia pomonella (L.), males were investigated in Israel. An Israeli-manufactured rubber septum was significantly better than the CM Pherocon cap in attracting males to a Pherocon 1C cap trap or an IPS tra...
Article
The effects of pheromone components, pheromone dose in the dispenser, aging of dispenser in the field, and trap type on trapping efficiency of males of the honeydew moth,Cryptoblabes gnidiella (Mill.) (Lepidoptera: Pyralidae), were investigated. At dosages of 2 or 0.2 mg, a binary blend containing (Z)-11-hexadecenal (Z11–16: Aid) and (Z)-13-octadec...
Article
Pheromone traps were reliable for detection and estimation of Heliothis armigera adult populations in cotton fields. An increase in male catches in traps was usually followed by an increase in larval density, but no correlation was found between the two. Pheromone traps may therefore serve as a warning device indicating potential attack, but larval...
Article
The sex pheromone gland extracts ofSpodoptera littoralis (Boisd.) in Israel were reexamined by capillary gas chromatography and capillary gas chromatography combined with mass spectrometry. The following compounds were identified: (Z)-9-tetradecenyl acetate (46%), (Z,E)-9,11-tetradecadienyl acetate (33%), (Z,Z)-9,11-tetradecadienyl acetate (4%), (E...
Article
(E, E)-10,12-hexadecadienal (HDD) effectively attracted males ofEarias insulana (Boisduval) when released from polyethylene vials but not from rubber dispensers. Traps baited with 3 mg HDD/trap were as effective in luring males as traps baited with four virgin females. Funnel traps baited with either HDD or virgin females captured significantly mor...
Article
Avocado plantations in Israel neighbouring cotton fields were heavily infested with and damaged by the long-tailed mealybugPseudococcus longispinus Targioni Tozzetti. Drift of pesticides from the aerial sprays of those cotton fields upset the biological equilibrium and resulted in outbreaks of the mealybug population. The honeydew moth,Cryptoblabes...
Article
(Z)-11-hexadecenal and (Z)-9-hexadecenal were ineffective lures for H. armigera males unless combined. Attraction depended upon perception of a 90%–99% combination of (Z)-11-hexadecenal with 1%–10% (Z)-9-hexadecenal. Increasing the level of (Z)-9-hexadecenal in the mixture to 26.2% reduced catches. Adding 2.3% (Z)-7-hexadecenal to the mixture did n...
Article
(Z)-9-tetradecenyl formate (Z-9-TDF) had no disruptive effect in Spodoptera littoralis when released at high rates from 4 evaporators located at 3.5 m radius from the attractant. At this distance, (Z)-9-tetradecenyl acetate (Z-9-TDA) was an effective disruptant, somewhat less effective at 7 m radius and totally ineffective at 32 m. At 32 m, (Z,E)-9...
Article
The efficiency of the synthetic sex attractant ofS. littoralis and the effect of trap size on male captures in water traps and in newly designed dry traps were investigated. The synthetic attractant was less efficient in attractiveness than virgin females in both small (17 cm) and large (60 cm) traps. Trap size did not affect male captures in traps...
Article
The common avocado varieties grown in Israel can be graded in descending order of susceptibility to the long-tailed mealybug,Pseudococcus longispinus (Targioni Tozzetti), as follows: Hass, Nabal, Fuerte, Ettinger. The long-tailed mealybug was recorded in Israel on 36 host-plants belonging to 29 different botanical families.
Article
Field experiments were conducted to clarify the effective sphere of pheromone traps for capturingS. littoralis males. Most males were recaptured on the night of release and only a few were trapped on the following night. Recapture of males was not affected by the number of wild males present in the field. Percent recapture was negatively correlated...
Article
The extent of fruit drop and damage inflicted to date fruit byCoccotrypes and nitidulids was estimated and control measures were investigated. Fruit drop, which occurred mainly in July and resulted in a 30-40% yield loss, was due mainly toCoccotrypes, which attacked unripe fruit. Fruit which dropped and started to rot was infested by nitidulid beet...
Article
Field trials were conducted in 1971–1974 to control the honeydew moth,Cryptoblabes gnidiella Mill, withBacillus thuringiensis. Dipel, a commercial preparation containingBacillus thuringiensis var.kurstaki (HD-1 strain), was highly effective (at concentrations ranging from 0.25% to 1.5%) in killing caterpillars of all developmental stages. In both t...
Article
The aim of this investigation was to clarify whether pheromone traps could provide a reliable tool for early detection of aS. littoralis adult population and for indicating infestation by its larvae in the field. The aggregated pattern of distribution of adults is indicated by the fit of data to Taylor’s Power Law or to the negative binomial distri...
Article
A description is given of efforts to develop an integrated control program for successful pest management of date palms in Israel. Work has been concentrated on biological control of the key pestP. blanchardi, and on alternative control operations for the remaining pests. The fact that date fruit is concentrated in bunches was used successfully to...

Citations

... The citrus mealybug, Pl. citri, was observed in citrus and pomegranate orchards. It is one of the most important pests of citrus and many other host plants in subtropical and tropical regions as well as the Mediterranean region [9,67] . ...
... However, after that, the rate of pheromone emission (5.5 mg/h per ha) was still enough to sustain good mating disruption in the field. Kehat et al. (1979) report effective communication disruption on S. littoralis with release rates ranging between 2.0 and 4.0 mg/h per ha. Release rate of 1.0 mg/h per ha resulted in decreased disruption efficiency and when the pheromone emitted was increased to 12.2 mg/h per ha, disruption was not improved (Kehat et al., 1979). ...
... The beetle attacks the green drupes (fruit) of the date palm (P. dactylifera), causing the bulk of these to abscise (naturally fall off) one to two days later [9] causing production losses between 20 and 40% [10,11]. C. dactyliperda also attack other palms, in particular the Canary Island date palm (P. ...
... Insect pheromones play multiple roles in insect control (Pawar and Singh 1993). They can be used directly to control insect pests or used as a survey and monitoring tool (Kehat et al. 1982) to guide pest management decisions. SPLAT (Specialized Pheromones and Lure Application Technology) is a proprietary base matrix formulation of biologically inert material used to control the release of semiochemicals and/or odors with or without pesticides (Cork and Hall 1998). ...
... This is comparable to the fastest rate found for the boll weevil 0ohnson et al., 1976). Lepidoptera have very quick mark-releaserecapture times (Baker and Roelofs, 1981; Karandinos, 1974; Kehat et al., 1976; Kishaba et al., 1970). Thirty percent of marked cabbage looper, Trichoplusia ni (Hubner), males released 105 m downwind from a 25-mg pheromone source were recovered within 15 min (i.e., 420 m/hr) (Kishaba et al., 1970 ). ...
... Several mechanisms may be involved. Host–plant characteristics may favor or be detrimental to the development, reproduction and survival of mealybugs (Boavida and Neuenschwander 1995 ; Calatayud et al. 1994b ; Leru and Nassar 2007 ; Tertuliano et al. 1993 ; Wysoki et al. 1977 ; Yang and Sadof 1995) . The resistance mechanisms of the host plant may become involved in both the fixation (antixenosis) and the development of the mealybug (antibiosis) (Tertuliano et al. 1993) . ...
... Funnel traps (i.e. plastic cups with a funnel structure) are intensively utilised to capture arboreal Coleoptera (Hanula et al. 2011;Hayes et al. 2009;Miller and Duerr 2015) and Lepidoptera (Kehat and Greenberg 1978;Kehat et al. 1981;Malo et al. 2006). ...
... Specifically, the female gypsy moth Lymantria dispar L. produces an olefin, 2-methyl-cis-7-octadecene, to mask the attractiveness of the sex pheromone to males [36], and the Eastern spruce budworm, Choristoneura fumiferana Clemens, releases E11-14:OH, the (E) configuration isomer of Z11-14:OH, to inhibit the attractive effect of its sex pheromone [35]. The most intensively investigated example is the inhibitory effect of Z11-16:OH in the cotton bollworm Helicoverpa armigera Hübner; Z11-16:OH has been found to reduce male attraction to pheromone lures in wind-tunnel assays at 5% and 15%, and in field bioassays at 6% of the major pheromone component [36][37][38][39][40]. It was hypothesized that the observed attractiveness-masking phenomenon was a result of immature female H. armigera modulating the attraction of males by emitting the antagonist Z11-16:OH along with the pheromone during the first two nights of calling and that this prevented males from mating with immature females, ensuring maximum fecundity [41]. ...
... Chemical control trials against date palm pit scale have been conducted in Palestine (Kehat et al. 1964) and Iran (Gharib 1974), where the pest has caused severe damages to date palms. Other species of genus Asterolecanium have also been reported to be controlled by chemical insecticides in different countries (James 1932;Morril and Otanes 1947;Shread 1960;Kehat et al. 1964Kehat et al. , 1974Gharib 1974;El-Kifil et al. 1980;Felippe et al. 2005). Kehat et al. (1964) carried out eight trials in Bet Shean valley in 1959-1960. ...
... Furthermore, to optimize the efficacy of monitoring trap and in consideration that, several factors (e.g. dispenser type, field aging of the dispenser, the attractant dose in the releaser, etc.) can affect trap attractiveness (Anshelevich et al., 1994;, we evaluated also different attractant doses loaded in two different releasers, estimating the rate of emission of the chemicals during the weeks of utilization. ...