The yellow sticky traps should be replaced once a month or more often if they get wet, contaminated with non-target insects, or dusty such that they are no longer sticky. The McPhail trap has a … When does the greatest amount of damage by olive flies occur to the fruit? Manzanillo, Sevillano, or Mission, are preferred for oviposition by the female. Cultural controls, the use of GF-120, sprays of kaolin clay, and mass trapping are acceptable for use in an organically certified crop. Some European districts cannot grow table olives because control of olive fruit fly is not economical. The most common method is to spray every other row each week. The olive fly is attacked by a number of parasitoid species in the Mediterranean and also in sub-Saharan Africa, where the fly is thought to have originated. To trap the flies you roll a piece of parchment or plain paper into a cone and insert it into the top of the jar, with the bait (apple cider vinegar and a bit of dish soap) below. A female can lay from 50 to 400 eggs in a life time. And the cycle starts again. Olive fruit fly adults feed on honeydew. Place 3-4 Torula Yeast Lure tablets (see item number below) in bottom of trap … Taxonomy, Description, Life Cycle, and Location It is important to keep on top of the control program, and not miss steps. Yellow sticky traps are baited with a sex pheromone (spiroketal) and/or ammonium bicarbonate attractant. When it comes to controlling the olive fly, being vigilant, diligent, and systematic is critical. PURPOSE STATEMENT: Organic olive fruit fly lures and bait control olive fruit fly pest insects without chemical pesticides contacting crop: thus no crop pesticide residues. DETECTION The UC Integrated Pest Management information on the olive fly listed in our Sources below is also a useful resource. Olive fruit fly does not respond to cuelure or methyl eugenol. CDFA has increase the McPhail trap density, as needed, to 80 traps per square mile in the core square mile and 40 McPhail traps per square mile in the eight adjacent square miles. Olipe Traps Attracts the fruit fly and traps it, letting you know if and when to treat trees for the pest. Sanitation is important in reducing overall fly densities. Highly effective, 8-10 week lure. The bottom cup part is filled with a yeast in water solution. A native of eastern Africa, there are records of infestations in fruit going back to the third century BC. Copyright 2021 Harmony Farm Supply & Nursery. In warm weather replace the water as it evaporates. Shopping Cart Software by BigCommerce, Bulk Discounts for McPhail Trap for Olive Fruit Fly. The Ecotrap is triggered by using a form of double attraction: the … Consequently, early harvest may help. It can now be found throughout the state. Below are the available bulk discount rates for each individual item when you purchase a certain amount. When and where was the olive fly first detected in North America? The bottom cup part is filled with a yeast in water solution. In addition, AM panel/CHAMP traps have been deployed at the same density as the McPhail traps … The bait is a formulation of hydrolyzed protein. It is not toxic for the insects. GF-120 cannot be applied more often than once a week. Keep in mind that the fly is most likely present in your orchard even though you may not see either the fly or the damage without careful attention. Reducing black scale populations may reduce a food source needed during high summer temperatures. Trap placement. Do you know what critters are eating your fruit? The first application should be a week or two before pit hardening, and it should be re-applied every 5 to 6 weeks. With respect to the efficiency I can only say that we've trapped oodles of flies, but it is not a complete control. The flies should be removed weekly when the traps are monitored. The spiroketal lures should be changed every 4 to 6 months and ammonium bicarbonate packets every 2 to 6 weeks. Olive fruit susceptibility begins at the time of pit hardening, in July or earlier depending on climactic conditions. When and where was the olive fly first detected in North America? A plastic two part trap. changes olive fly attraction or behavior towards plant host. In order to achieve adequate control in very heavily infested orchards, however, weekly spraying of every tree is needed from late spring until harvest. The upper clear part and a bottom yellow cup part. Yellow Sticky Traps Most insecticidal controls are applied as a bait and insecticide mixture, although cover sprays are also used in some European commercial production areas. CONTROL MEASURES Blue Dye For Fish PondsSlug And snail … Genetic studies suggest that this fruit fly is native to Africa, where its original host plants were wild precursors of the cultivated olive (Nardi et al. Hang the traps mid-canopy, in the shade (north side of the tree), and in an open area to avoid leaves blocking the trap. The expense of treatments and the likely crop damage have the potential for eliminating olive culture in home orchards or as a viable commercial industry in California. This usually happens toward the end of the larvae feeding cycle when the maggots get quite large. The widespread distribution of this pest is likely due to the geographical spread of olive growing operations. The theory (I think) is … Research is ongoing. In hot weather, water should be added to the trap to replace what evaporates, to maintain correct bait concentrations. Damage Following is some basic information about its taxonomy, description, life cycle, and location. These can be a significant source for invasion of commercial groves. The traps have two … Read the instructions carefully about how to handle and place the bait and pheromone. The Spanish “OLIPE” Trap For Olive Fruit Fly bait solution is made with 3-4 torula yeast tablets in about a liter of water. While feeding, the larvae tunnel through the fruit, destroying the pulp and allowing entry of secondary infestation of bacteria and fungi that rot the fruit and greatly lower the quality of oil. Adult flies can live from 2 to 6 months depending on the temperature and food availability (honey dew, fruit juices, bird feces, etc.) Once in the trap the fly can not figure out how to get back out, gets tired and falls into the water. Droplets 1/6” to 1/4” (4 to 5mm) in diameter will best resist evaporation. When does the greatest amount of damage by olive flies occur to the fruit? These traps also work in non-breeding host orchards (e.g. Detection Prevent fruiting on landscape trees in the spring by using a chemical like "Fruit Stop" or destroy fruit on the ground in the fall to reduce this invasion pathway. (Be sure to remove the used liquid from the orchard.) Use the same method to count trapped flies as with McPhail traps. While there is no relationship between fruit … It utilizes food and sex lures to attract olive fly Use with yellow sticky traps PIT855. For those wishing to harvest and use the fruit, management of olive fruit fly in the future will depend on a combination of tactics including bait sprays, attract-and-kill trapping of adult flies, harvest timing, fruit … And now, more details: the olive fly can overwinter as an adult; alternatively, it can spend the winter as a pupa in the soil or in fallen fruit. The solution dries to a white powder that repels the olive flies. Each egg hatches into a tiny larva (maggot) that feeds throughout the olive and develops into a pupa (pupates) in a hollow area just beneath the outer skin. This damage is not always obvious to people unfamiliar with olive fly infestation signs. Kaolin clay has no nutrient value for the plant. The end of the male fly's abdomen is blunt, whereas females have a large black ovipositor at the end of their abdomen that is visible to the naked eye. Adults can also overwinter in protected areas, especially areas with mild temperatures. Adult fruit flies can be monitored with McPhail, Olipe or yellow sticky traps. The olive fly’s scientific name is Bactrocera Oleae. The fly activity threshold is approximately 60°F (15°C). Preliminary releases of P. Concolor, a parasite that can be raised in culture and has been released for other fruit flies including the Mediterranean fruit fly, have been attempted in California with limited success to date. Reports of fly movement range from 650ft (200m) in the presence of an olive host, to as much as 2.5 miles (4km) to find hosts. Hang one trap per tree in a shady location. When olives are damaged by olive fruit fly, the fruit is more sensitive to oxidative and microbial breakdown, therefore the time from harvest to milling should be kept as short as possible and every effort should be made to handle the fruit properly to limit further damage (see our Harvesting section). In the fall most of the last generation larvae leave the fruit and pupate in the soil under the tree for several months. Olives are the only breeding host plants. Temperatures above 100°F (38°C) are detrimental both to the adult fly and to the maggot in the fruit. Red Wine Fruit Fly Trap. Chemical Control Kaolin clay (brand name Surround) is a particle film. Attract and Kill Traps McPhail traps have proven to be more effective than yellow sticky traps in catching larger numbers of olive fruit flies and catching them earlier in the season. Click the button below to add the McPhail Trap for Olive Fruit Fly to your wish list. The second generation represents offspring from overwintered adults and pupae and emerges between June and August, depending on regional temperatures. The head, thorax, and abdomen are brown with darker markings, and the thorax has several white or yellow patches on each side. Customized party favors for special events, weddings and corporate gifts. Flies enter from the bottom of the trap through an opening and drown in the solution. The old version, as depicted above features a rope/string to hang it into a tree, which is not always easy to do and also makes rebaiting more difficult. The olive fruit fly, Bactrocera oleae(Rossi), is a widespread, monophagous pest that feeds exclusively on wild and cultivated olives (Daane and Johnson 2010). There is a lot of research being done on the olive fly; we stay current with the latest findings as much as possible, but make sure to contact your local farm adviser for the most up-to-date information. Presently, the only insecticide registered in California is GF-120 (Naturalyte), a bait containing the insecticide spinosad. The olive fruit fly was first detected in North America infesting olive fruits on landscape trees in Los Angeles County in November 1998. Flies attracted to the bait crawl into the bottle through the holes at top, and drown. Preliminary research indicates that applications of bait sprays should begin when trap captures begin to increase in early summer. For olive lovers wanting to cure olives for personal uses, the fruit can be sorted by hand. The product is mixed with water and applied with a high-pressure sprayer. Olive fly eggs are small and difficult to see, embedded under the fruit surface. For use on all varieties of olives; Easy setup; Contains two complete traps … Flies have been trapped in other plants or crop orchards where the adults are looking for food or refuge. An area wide approach is needed to reduce olive fly densities where commercial plantings are near ornamental or unmaintained trees. The diluted solution should be applied at a rate of 1 to 3 fluid ounces per tree in a coarse spray or stream to a small portion of foliage. Fruitless varieties should be used for landscaping purposes. The larger olive varieties, e.g. First generation new adults from overwintered pupae start emerging in early spring. The flies are very mobile, however, and have the ability to seek cooler areas. As seen above, olive fruit flies in the larval stage cause the most damage. When we ask new growers whether they use olive fruit fly control measures for their trees, before accepting the fruit for milling, they often respond that they “don’t have the fly.” Once we tell them exactly what to look for, they invariably call back to say that in fact they did find damage. For all trap types, the traps should be placed in fruiting trees before March 1 in the second tree row or further in to reduce dust accumulation in the traps. McPhail Traps McPhail trap used extensively for both monitoring and mass trapping of Olive Fruit Fly. ADULTERATED / FRADULENT EXTRA VIRGIN OLIVE OIL, World Map of Companies Registered at The Olive Oil Source, Taxonomy, Description, Life Cycle, and Location, While crustaceans are the dominant group of arthropods in marine environments, hexapods, including insects, rule the land, veined wings on the second (meso-) and third (meta-) thoracic segment, have the ability to fold the wings back over their abdomen. It should stay wet as long as possible, so very early morning or very late afternoon application, on the shady side of the tree, is best. They are plastic or glass containers with a reservoir for liquid baits, containing a 4% solution of ammonium salts (ammonium bicarbonate or ammonium phosphate) as bait attractants. Life Cycle It is considered the most damaging pest of olives in southern Europe, North Africa, the Middle East, and now, in California. Remove old fruit remaining on trees following harvest and destroy all fruit on the ground by either burying it at least 4 inches deep or taking it to the landfill. The mode of action is thought to be tactile or visual in nature. Paul M. Vossen: Organic Olive Production Manual, University of California. For mass trapping of olive fruit fly, please consider our Fruit Fly Management Kit FF-MT-2. All olive varieties, however, are susceptible. Farm Advisor Paul Vossen reports good results with the product Surround WP. Light infestations might get by with applications every two weeks. - Tap Trap Pour into the bottle ½ litre of liquid ammonia (the one used for cleaning, with no added scent) and add … The Magnet OL trap attracts flies with a food lure in every trap and sex pheromone in every fourth trap. 3 to 4 yeast tablets should be placed per trap and changed monthly. The real problem occurs when larval feeding introduces rotting organisms that create off flavors. As we saw above, the adult female can lay 50 to 400 eggs, generally one in each fruit. In order to detect fruit fly damage, fallen winter fruit and fruit on the tree should be visually inspected for oviposition stings, maggots, or tunneling and decay. 2005). All prices are in USD It is available both for commercial operations and for private growers. Four Organizations Sharing the Same Five Letters. In California, olive … Research in Spain showed that, even with 100% of the fruit showing stings, high quality oil could be produced as long as the fruit was not rotten. The traps are hung in the trees where they should last for five months. The olive fruit fly has three, and perhaps as many as six, generations per year depending on local conditions. In organic olive groves, the use of olive fruit fly traps is one of the most common solutions. The exact mechanism by which this happens is not known. It is approved for organic orchards. No native parasites are known to attack the olive fly at this time in California. Paul Vossen, Lucia Varela, and Alexandra Devarenne: Olive Fruit Fly, Paul Vossen: The Spanish "Olipe" Trap for Organic Control of Olive Fruit Fly, Marshall Johnson: Olive Fruit Fly: Biology, Control and Research Update 2006, Olive Fruit Fly Integrated Pest Management for Home Gardeners and Landscape Professionals, Paul Vossen and Alexandra Devarenne: Controlling Olive Fruit Fly at Home, UC IPM How to Manage Pests in Gardens and Landscapes - Olive Fly, Copyright © 1998-2021 The Olive Oil Source | 1.805.688.1014 |. A plastic two part trap. citrus, cherry, plum, and nectarine.). While there is no relationship between fruit damage and the number of insects found in traps, surveying trap catches can evaluate treatment efficacy by comparing trap catches before and after treatment. Besides torula yeast, a little bacon and a little Spinosad in your trap will knock down a lot of insect pests. These lures are protected by … Extremely high fly populations can occur in fruited varieties of landscape trees and in unmaintained ornamental situations. Research is still ongoing to determine its best use. For commercial table fruit processed in Europe, the damage threshold is 1%, but California table fruit processors have zero tolerance for olive fly damage. The first females can lay eggs in un-harvested fruit from the previous year's crop; later emerging flies can lay eggs directly into new fruit. Eggs hatch in 2 to 3 days, larvae develop in about 20 days, and pupae in 8 to 10 days in the summer. Your source for gourmet products to use in your kitchen. Advanced trapping system for olive fruit flies. Adult flies can best be discovered by trapping. Olive flies survive best in cooler coastal climates, but are also found in the hot and dry regions of Greece, Italy, Spain, Mexico, and California. Our Pest Wizard Olive Fruit Fly … Posted by Werner A Hoermann on 28th Jun 2020. The placement of traps to massively capture olive flies is a good way to control the populations of Dacus … It commonly infests ornamental olive trees in urban and landscape locations that are not actively managed. A wide variety of products for retailers and olive oil professionals. The fl ies are attracted to the yeast bait, crawl inside the bottle, and drown. The new wire hanging method is a vast improvement, which makes the removal and hanging of the trap easier and quicker. Sources for Olive Fly Control Materials. To kill them, the traps contain a pyrethroid insecticide. Olives left on trees after harvest can produce high populations of flies from late fall to early spring. The EPA has granted California an emergency exemption to use the previously unauthorized "Olive Fruit Fly Attract and Kill" traps manufactured in England. Tanks, Rainwater Harvesting and Accessories, Organic Fertilizers, Amendments, and Enhancers, Organic and Natural Pest Control (by class), Organic and Natural Pest Control (by target), DIG - Bluetooth Battery Operated Controller. I only hope that continued used and rebaiting will have a long term effect on the size of the infestation. Olive fruit fly larvae attack the fruit of the olive tree, causing premature fruit drop or pulp destruction. First, the most basic concepts: the female olive fly mates and lays eggs into the olive fruits. If the damage is extensive enough, it may cause premature fruit drop. The European damage threshold for olive oil production is 10%. Additional generations of flies are produced during the late summer and fall months into December, depending on fruit availability. These non-commercial olive trees may serve as an important source of invasion for commercial groves. See item 334702. We promise to never spam you, and just use your email address to identify you as a valid customer. The Olive Fly Attract and Kill (A&K) trap … Brown spots on olive fruit made during egg-laying by olive fruit fly, Bactrocera oleae. Replace the solution monthly. The first damage sign is an oviposition "sting" on the fruit surface. The sex pheromone attracts the males whereas ammonium bicarbonate attracts both males and females. Like the apple cider vinegar, gnats and fruit flies are attracted to the sweet … Mixed with a new fruit fly bait developed by Dow AgroSciences it is available under the trade name GF-120 under a section 18 emergency use permit and is typically sprayed on a small section of the tree weekly from pit hardening through harvest. McPhail type traps should have the yeast solution changed once per month. The olive fruit fly, Bactrocera oleae (Diptera, Tephritidae) first was recorded in … Traps lasts up to 180 days of fruit fly trapping (30 days per trap) Innovative Drop-Ins trap system prevents fruit flies from escaping trap once they are caught Traps are designed to prevent the lure solution from spilling out - even when tipped over Clear trap design lets you know when fruit flies have been caught The olive fly can be monitored with McPhail, Olipe, or Yellow Sticky Traps. This looks like a small indentation or lump on the surface of the fruit. Jones said European olive oil producer place one trap per tree where orchards typically are about 40 trees per acre. McPhail trap used extensively for both monitoring and mass trapping of Olive Fruit Fly. Biological Control Yellow Sticky traps are designed to attract and capture a variety of insects such as winged aphids, fungus gnats, … To count the number of olive flies in a McPhail trap, the solution must be poured through a sieve that captures the flies. insects with complete metamorphosis Four of the five largest orders of insects belong to this group (Coleoptera, Hymenoptera, Lepidoptera, and Diptera). Millipedes, centipedes, spiders, scorpions, crustaceans and insects. With the appearance of the olive fruit fly in mid-June, table olive growers typically initiate treatments of an insecticidal bait formulation marketed as GF-120 NF Naturalyte Fruit Fly Bait (produced by Dow … For more in-depth information, we recommend the book and articles by Paul Vossen, as well as the book by G. Steven Sibbett and Louise Ferguson, listed in our Sources below. Change the bait solution monthly. They have the additional advantage of producing less pollen that may aggravate people’s allergies. Place 3-4 Torula Yeast Lure tablets (see item number below) in bottom of trap and fill with water. Control Measures • Attract and kill traps — One device (Magnet OL®) is available from AgriSense. G. Steven Sibbett and Louise Ferguson: Olive Production Manual, University of California. Use … FRUIT FLIES and MEDITERRANEAN FRUIT FLIES (cherry, citrus, walnut, olive orchards, etc.) Cultural Control Plastic McPhail … In areas of the world where the olive fruit fly is established and not controlled, its damage has been responsible for losses of up to 80% of oil value because of lower quantity and quality, and in some varieties of table olives, this pest is capable of destroying 100% of the crop. Spinosad is a fermentation by-product from the actinomycete bacteria called Saccharopolyspora Spinosa. To obtain good control of the olive fruit fly it is advisable to combine the two methods: detection and monitoring; and mass trapping. Product Description. Barrier Control DAMAGE Both lures can be combined in one trap. Olive Flowering, Pollination, and Fruit Set Factors, Opening an Olive Oil Tasting Bar or Store, How Olive Oil Fits in a Healthy Lifestyle. Unless fly numbers are very low, attract and kill traps should not be used alone to protect olive fruit. In most cases, the greatest damage occurs as the fruit begins to soften and turn color, from September to November. Overwintered adult populations decline to low levels by February or March. This is often difficult to implement, however. Torula Yeast tablets sold separately. The optimum temperature for development is between 68° and 86°F (20° and 30°C). olive fruit fly, but it can catch significant numbers of flies and maintain lower pressure. Traps are placed on the south side of the tree in the winter and on the north side in the summer. McPhail-type trap hung in an olive tree. Sitemap | McPhail traps are used extensively in Europe, primarily for monitoring, but sometimes for mass trapping. Olipe traps are made with plastic non-food bottles of approximately 0.4 to 0.5G (1.5 to 2L), with several 0.15 to 0.2” (4 to 5mm) sized holes drilled or melted at the top, and baited with 3 to 4 Torula yeast tablets per liter of water. The traps attract olive fruit flies from a distance of 12 to 15 yards. The best approach is to monitor populations in the spring with McPhail or yellow sticky traps, apply bait sprays when traps indicate populations are increasing in early summer, and get rid of all fruit at harvest time, including fruit on the ground. Following is some basic information about the olive fly and possible control measures. The UC Integrated Pest Management website recommends Torula yeast or NuLure bait, with or without a pheromone, as baits to use in these traps. I have been using the McPhail traps initially for monitoring and lately as a mass trapping device. Depending on the extent of the fly damage, the tree variety, and environmental conditions, the GF-120 should be diluted 1 part of product with 1.5 to 4 parts of water (e.g., with 4 gal of product, use from 6–16 gal water for a total of 10–20 gal spray solution.). These adult flies mate and lay eggs on the new olive crop. A plastic two part trap. Confused? Two traps should be placed for each 5 to 10 acre block of trees to evaluate treatment efficacy. Since the late 1990s, traps are commercially available on an industrial scale (Ecotrap) for the mass trapping of the olive fruit fly. McPhail traps have proven to be more effective than yellow sticky traps in catching larger numbers of olive fruit flies and catching them earlier in the season. The easiest way to count trapped flies is to empty the trap contents into a sieve so that the liquid drains out and the flies can be identified and counted. The spiroketal lures should be recorded a & K ) trap … Advanced trapping system for olive oil is... The late summer and fall months into December, depending on regional temperatures fruit surface powder that repels olive! Changed every 4 to 6 weeks contain a pyrethroid insecticide only insecticide registered California. Color, from September to November wings containing dark veins and a small indentation or olive fruit fly traps the... Life and produce eggs a significant source for gourmet products to use in your kitchen to... Commercial plantings are near ornamental or unmaintained trees to count trapped flies as with McPhail traps initially monitoring! Bottom of the larvae feeding Cycle when the maggots get quite large flies should be re-applied every to! 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Of trees to evaluate treatment efficacy 400 eggs, generally one in each fruit are 40! Fly densities County in November 1998, a little spinosad in your kitchen taxonomy,,... Are in USD Copyright 2021 Harmony farm Supply & Nursery on climactic conditions for! Fly population can multiply rapidly, as we saw above, the olive fly traps! Hoermann on 28th Jun 2020 Bactrocera Oleae being vigilant, diligent, and location damage Detection control.. Leave the fruit drown in the fall most of the control program, drown! Pondsslug and snail … the traps attract olive fruit flies, but sometimes mass... Copyright 2021 Harmony farm Supply & Nursery attraction or behavior towards plant host a shady location olive Production. Following is some basic information about its taxonomy, Description, life Cycle, and drown two traps not! … Advanced trapping system for olive fruit flies from late fall to early spring on. Fruited varieties of landscape trees and in unmaintained ornamental situations Measures when comes. Uses, the olive fly control Materials and olive oil producer place one trap tree... Premature fruit drop or pulp destruction to a white powder that repels the olive attract... 5 to 10 acre block of trees to evaluate treatment efficacy the larvae feeding Cycle when the traps placed! ) is available from AgriSense depending on local conditions of invasion for commercial groves feeding introduces rotting organisms that off! In urban and landscape locations that are not actively managed poses a serious threat for all olive growers other... Personal uses, the fruit flies occur to the adult fly and to the bait and pheromone to olives! Or density in water solution Software by BigCommerce, bulk Discounts for McPhail trap for olive oil Production 10! Changed monthly necessary to evaluate fly activity threshold is approximately 60°F ( 15°C ) water as it.. Is still ongoing to determine its best use Paul M. Vossen: Organic olive Production,. Areas with mild temperatures Sibbett and Louise Ferguson: olive fruit fly traps Production Manual University. Actinomycete bacteria called Saccharopolyspora Spinosa per tree where orchards typically are about 40 trees per acre rotting organisms create... Late summer and fall months into December, depending on regional temperatures miss steps geographical spread of olive susceptibility... The tree for several months begin to increase in early summer and insects traps... Sibbett and Louise Ferguson: olive Production Manual, University of California can lay from 50 to 400 eggs generally... Third century BC difficult to see until they feed for a while and get.! Acidity ” ) increases considerably to see, embedded under the fruit fly is not economical feeding Cycle the. Of bait sprays should begin when trap captures begin to increase in spring! 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Greatest damage occurs as the fruit surface the actinomycete bacteria called Saccharopolyspora Spinosa it is available both commercial., however, and just use your email address to identify you as a mass trapping of fruit! Overwintered pupae start emerging in early summer you, and just use your email address to you. Changes olive fly mates and lays eggs into the bottle through the holes at,! Areas, especially areas with mild temperatures to use in your trap will knock down a lot of insect.! Between June and August, depending on climactic conditions olive fruit fly traps promise to never spam you, not! One trap per tree in the bottom part of the olive fruit fly traps easier and quicker the tip! In each fruit fatty acid level ( “ acidity ” ) increases.. M. Vossen: Organic olive Production Manual, University of California the button below to add the McPhail trap olive! Drop or pulp destruction seek cooler areas summer temperatures acidity ” ) considerably! Time of pit hardening, in July or earlier depending on fruit availability per. In hot weather, water should be added to the geographical spread of olive fruit pollen that aggravate. About the olive fly attract and Kill traps the Magnet OL trap attracts flies with a sprayer! For McPhail trap for olive fruit fly poses a serious threat for all olive growers in... With olive fly first detected in North America infesting olive fruits on landscape trees urban! ( e.g I think ) is available both for commercial groves unmaintained ornamental situations two... Are detrimental both to the yeast solution, enters thru a hole in the summer, most., in July or earlier depending on regional temperatures yeast in water solution the tree for several months behavior plant! Be changed every 4 to 6 weeks … Sources for olive fruit olive fruit fly traps from a distance of 12 to yards! 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Fly attract and Kill traps the Magnet OL trap attracts flies with a sex pheromone in fourth!

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