Grapes leaves - Knowledgebase Question

Warminster, PA (Zone 6B)
Question by sanem01
April 14, 2007
we have grapes since late 80's,last couple years, problems Japanese beetles are destroying all leaves, we think is killing the plants, any help or idea how to protected if is not too late.
Thank you


Image
Answer from NGA
April 14, 2007

0

The Japanese beetles will defoliate plants in a bad season and this can stress the plant. They are difficult to control, especially with grape which is a beetle favorite. You could try to repel them using a neem-based spray. Milky spore or beneficial nematodes can be used to reduce the grub population in the soil, however this will not be effective unless a wide area is treated because the beetles are able to fly so far. The beetles can also be sprayed with carbaryl (Sevin) but this will only kill the beetles it contacts directly. Handpicking can also help, although it is time intensive. Do not use the pheromone traps as these lure more beetles to the area.

You must be signed in before you can post questions or answers. Click here to join!

« Return to the Garden Knowledgebase Homepage

Member Login:

Username:

Password:

[ Join now ]

Today's site banner is by sunnyvalley and is called "Hibiscus 'Purpureus Variegatus'"