Rent Shop Volunteer Join

Q. Who is Mr. Smarty Plants?

A: There are those who suspect Wildflower Center volunteers are the culpable and capable culprits. Yet, others think staff members play some, albeit small, role. You can torture us with your plant questions, but we will never reveal the Green Guru's secret identity.

Help us grow by giving to the Plant Database Fund or by becoming a member

Did you know you can access the Native Plant Information Network with your web-enabled smartphone?

Share

Ask Mr. Smarty Plants

Ask Mr. Smarty Plants is a free service provided by the staff and volunteers at the Lady Bird Johnson Wildflower Center.

Search Smarty Plants
See a list of all Smarty Plants questions

Please forgive us, but Mr. Smarty Plants has been overwhelmed by a flood of mail and must take a break for awhile to catch up. We hope to be accepting new questions again soon. Thank you!

Need help with plant identification, visit the plant identification page.

 
rate this answer
Not Yet Rated

Wednesday - December 24, 2008

From: Richland, IN
Region: Midwest
Topic: Trees
Title: Underdeveloped pecan kernels with brown spots
Answered by: Nan Hampton

QUESTION:

our pecan tree was loaded this year. it is a soft shell . some of the pecan meats are not fully developed and have small dark spots on them. could this be a blyte of somekind and if so what can we do to correct this. we live in Southern Indiana

ANSWER:

Your description sounds like damage from sucking insects, the stink bugs (Family Pentatomidae) and leaffooted bugs (Family Coreidae).  Here is information from Louisiana State University and from University of Florida Extension Service about these insect pests that feed on the pecans and cause black (black pit) or brown (kernel spot) spots in the pecan meats. I suggest you contact your county office of the Purdue University Cooperative Extension Service for advice on current methods for controlling these insects.

Here is more information about diseases of Carya illinoinensis (pecan) from the Alabama Pecan Growers Association, Pecan Production Guidelines for Small Orchards and Home Yards from Arizona Cooperative Extension and a Field Key to Larvae in Pecans from Oklahoma Cooperative Extension Service.

 

More Trees Questions

Leaves dropping on evergreen sumac in San Antonio
January 11, 2012 - I have a large evergreen sumac in my back yard that started off as a small shrub 10 years ago. This summer the leaves turned red and now have dropped off. Is the plant dead? It sent out two smaller pl...
view the full question and answer

Transplanting a blue spruce from Pingee Grove IL
August 30, 2012 - Transplant 18" Blue spruce from 5 gal. bucket to ground.
view the full question and answer

City tree ordinance information
January 10, 2010 - Dear Mr. Smarty Plants, I am writing to you in regards to city tree ordinances. I am a citizen of Grand Prairie, TX. and although the city is a Tree City, the city does not have a tree ordinance. T...
view the full question and answer

Trimming oak threatening fence in California
July 21, 2008 - I live in Diamond Springs,California,I have a large oak tree growing between my neighbors' house and mine. A large branch is cracked and in danger of falling on my fence,I would like to lighten it up...
view the full question and answer

Is Viburnum rufidulum monoecious or dioecious?
July 28, 2014 - Is Viburnum rufidulum monoecious or dioecious? Your database does not address this for most plants.
view the full question and answer

Support the Wildflower Center by Donating Online or Becoming a Member today.