Pecan producers throughout Georgia are beginning to see some nut drop and are also approaching the optimal window for leaf tissue sampling. Below is a summary of key updates and recommendations from Dr. Lenny Wells, UGA Extension Pecan Specialist:
Nut Drop – What You Need to Know
- Nut drop is currently occurring across multiple varieties, especially ‘Pawnee’.
- In most cases, this is the expected “third drop,” which happens approximately 55 days after pollination, just before nuts begin rapid size expansion.
- This drop is a normal physiological thinning process.
- Heavier drop may occur in ‘Pawnee’ due to excessive crop load, reduced photosynthetic efficiency, early-season scab, and recent heat stress.
- Dropped nuts with green shucks and watery, undeveloped kernels are typical of third drop.
- If dropped nuts show signs such as blackened shuck stems, early shell development, or internal damage, consult your Extension agent to rule out anthracnose or other disorders.
Leaf Sampling – Now is the Time
- The recommended sampling window is July 7 through August 7.
- Collect terminal leaflets from the middle portion of current-season shoots. Select leaves that are free from insect and disease damage to ensure accurate results.
- Tissue analysis at this stage of the season provides valuable insights for adjusting current and future fertilization programs.
- For step-by-step instructions on how to properly collect pecan leaf samples, refer to this article from UGA Extension – Evans County:
Time for Pecan Tree Leaf Samples (Evans County Extension, 2021)
Insect Pest Activity
- There are increasing reports of spotted aphids, black aphids, and mites in pecan orchards, particularly under hot and dry conditions.
- Monitor pest pressure closely, especially in stressed orchards. Timely intervention may be necessary to protect foliage during the critical nut fill period.
Summary of Grower Recommendations
- Monitor nut drop; distinguish between natural shedding and stress-related issues.
- Submit leaf samples by early August for tissue analysis.
- Scout for aphids and mites and manage if populations begin to flare.
For more information, visit:
Dr. Lenny Wells’ original post: https://site.extension.uga.edu/pecan/2025/07/nut-drop-leaf-samples/
