Monday, August 11, 2014
Early August nut drop
In our orchard, the vast majority of nuts dropping from trees were damaged by stinkbug feeding. I also found evidence of hickory shuckworm activity. Nuts damaged by stinkbug were still filled with embryonic fluid (water) but the inside of the seed coat had turn dark brown to black in color (nut on right in photo above). In contrast, hickory shuckworm infested nuts were dry inside and I could see signs of larval tunneling. In the photo above, the red arrow points to a tunnel created by the shuckworm. I did not find any weevil punctured pecans in our orchard.
We will be spraying the orchard this week to combat shuckworm and stink bug. We'll use Warrior II insecticide at the rate of 2.56 oz/acre.