We have developed a table outlining the recommended insecticides for BMSB and their use restrictions to aide growers in making management decisions. Please note that the table has been revised since its original publication.
Tree Fruit Edition
Seasonal updates on insects, diseases, weeds, maturity dates and cultural practices impacting only tree fruit.
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June 25, 2013 Dean Polk, Dave Schmitt, and Atanas Atanassov
Fruit IPM Report: Week Ending 6/29/13
Fruit IPM Report 6-29-13 – Click to View | Download | Print
In this report:
- Peach
- Apple
- Grape
- Scouting Calendar
- Blueberry
- Trap Counts
June 25, 2013 Dave Schmitt
Brown Rot Found in Nectarines
Last week a block of Fantasia nectarines was found to have a very small percentage of rot present. This week several more blocks were found with rotten fruit present. The common denominator between the three is that they were all mid – late season nectarines that had been just thinned or were being thinned during the severe weather pattern we just experienced. Fruit were injured or the stems knocked loose from either heavy downpours or breaking up clusters. In one orchard many of the rotten fruit were dropping so it is likely the stem had been compromised. Any type of injury in these weather conditions can lead to rot infection.
So what should you do?
- Don’t panic! Fruit should have a high degree of resistance at this point. Only fruit injured in some way should be susceptible to rot;
- Maintain good coverage with a full rate of captan during periods of unstable weather;
- If possible, remove all the rotten fruit from the orchard canopy. Rotten fruit on the ground can be removed by discing where sod middles are not maintained.
June 18, 2013 Dean Polk, Dave Schmitt, and Atanas Atanassov
Fruit IPM Report: Week Ending 6/22/13
Fruit IPM Report 6-22-13 – Click to View | Download | Print
In this report:
- Peach: Oriental Fruit Moth; Tufted Apple Budmoth; Brown Rot
- Apple: Obliquebanded Leafroller; European Red Mites; Codling Moth
- Aphids: Spirea and Apple (green) Aphids
- Brown Marmorated Stink Bug
- Summer Diseases: Sooty Blotch and Fly Speck; White Rot and Black Rot; Anthracnose
- Pear: Pear Rust Mite
- Grapes: Grape Berry Moth
- Scouting Calendar
- Blueberry: Spotted Wing Drosophila; Oriental Beetle; Leafrollers and other Leps; Aphids; Putnam Scale; Cranberry Fruitworm; Blueberry Maggot
- Trap Counts
June 12, 2013 Dean Polk
Spotted Wing Drosophila Found in Blueberries
The first spotted wing drosophila adult was found on Tuesday, June 11, in a small field in Burlington County. The trap was placed between the commercial planting and the woods border. This finding, along with the coloring of early varieties, initiates a 7 day insecticide program now required for insect free berries. More on SWD management in the future.
Addendum: Summary of Fax Alert sent subsequent to June 12 post above.
Trapping for SWD began 3 weeks ago using 4 different types of attractants. The first positive trap was collected on 6/10 in Burlington County with a single male. On 6/13, 2 females were picked up at another site near the first one. We expect most other locations to test positive soon. This indicates that flies will be mating and laying eggs on ripening fruit. We assume that the population is low at the present time, but will build up over the next several weeks. This will be reflected in higher trap captures at additional sites. However, we also feel that population pressure must be suppressed over the entire season in order to avoid ‘out of control’ populations that result in infested fruit. Therefore Growers Must Be On A 7 Day Treatment Schedule Using Materials That Are Effective For SWD Control.
Last season this pest was responsible for wormy fruit contamination at many farms including some that were treating for the risk, however the level of contamination was in general proportion to the quality of the spray program. We expect SWD pressure to be at least as strong as last season. Data collected last season also demonstrated that pressure was present in all of our growing areas. Due to the serious risk of SWD we are recommending that ALL farms begin a 7 day treatment program now. Of course several factors may alter the need for a strict “7 day” program such as rainfall and the residual properties of the pesticide. The attached table will provide most of the information about your pesticide options so that you can make the best decisions for your particular situation. Please note that 2 neonicotinoid materials (Assail and Actara) are included in the SWD list. Conflicting research has shown some activity by these materials. These materials have some efficacy, but are weak SWD insecticides. We feel that their place in a SWD program is only early in the SWD season when populations are low, and you may still need something with aphid activity. If you use either Assail or Actara, use them only in the first spray (last week and this week). They are of no practical use for SWD control as the population increases. SWD may prefer shaded areas and therefore may pose greater risk in the sheltered zones of the bush (interior/low). For this reason it is important to achieve the best possible coverage practical for your situation.
June 11, 2013 Brad Majek
Devrinol Gets New Packaging and an Improvement
The new Devrinol formulation, Devrinol DF-XT, is still a fifty percent dry flowable formulation, but includes UV (ultraviolet light) protection, so the product is no longer broken down on the soil surface by sunlight. [Read more…]
