Fruit IPM for August 2, 2017

Peach:

Oriental Fruit Moth (OFM): The third flight is on the way down in southern counties, and northern counties. Populations are low in peaches, but higher in apples.

Treatment timing will depend on the material that you choose to use. Please see the insecticide timings below for insecticide type:

Tufted Apple Budmoth (TABM): The second flight is just getting started, but population numbers are very low at the present time. Growers in northern counties should be aware of this insect, since populations have been relatively high in northern counties for the past several years. Standard materials applied this week in southern counties will cover much of this second generation flight. Treatments applied next week will start to cover the flight in northern counties. Timings are updated as follows:

Cat-facing Insects, Tarnished Plant Bug (TPB) and Brown Marmorated Stink Bug (BMSB): Catfacing insects and stink bugs are difficult to find. Very little activity is present.

Brown Rot: Rot pressure has increased significantly with the warm humid weather, coupled with thunderstorms, and in some cases, hail. DO NOT stretch your fungicides, and make sure to alternate materials on a 5-7 day schedule. If you have 1.5 to 2” of rain, then realize that there is no more protection after that rain, unless you just applied a systemic material.

Apple:

Codling Moth (CM): The second flight continues to be stretched out. Numerous sites in all counties continue to have trap counts that show high populations. Any site with a trap count that exceeds 5 males per trap is considered above treatment threshold. While applications using Delegate, Altacor, and Voliam products should be continued where populations are high, these materials should be alternated, or include pyrethroids in the rotation.

Woolly Apple Aphid (WAA): Field reports indicate that mid July applications of Movento worked very well, and also controlled leafhopper populations that were also present. No WAA colonies could be found 2 weeks after treatment. A single application of Diazinon also controlled WAA populations, but leaving a few colonies still in the trees. Movento use in August IS NOT recommended, since uptake in the tree will not be as thorough as it was a few weeks ago in July.

Tree Fruit Trap Counts – Southern Counties

Tree Fruit Trap Counts – Northern Counties

Blueberry:

Spotted Wing Drosophila (SWD): Trap counts continue to increase, indicating higher populations. Only Elliott is now being picked, but treatments on that variety must remain tight in order to prevent infestation.

Blueberry Maggot (BBM): BBM trap counts are very low. Overall, populations are almost non-existent on most farms. There are exceptions where sprays have been stretched. One farm in Hammonton had up to 6 flies per trap, although spraying has stopped on this farm.

Sharpnosed Leafhopper (SNLH): Adult trap captures have increased slightly in Atlantic County, but we are still not ready to call this the second generation. Populations should increase over the next several weeks.

Blueberry Trap Counts

Atlantic County

Burlington County

Partial Key: SNLH – sharpnosed leafhopper, BBM – blueberry maggot