If the pH is too low or too high, uptake and use of nutrients is impaired. Harvesting the nuts as soon as they mature ensures better quality. One of the quickest ways to lose nut quality is to let them lay on wet ground. Harvest early and store nuts in a clean, dry place. However, refer to Table 2 for a few things that homeowners can do to manage insect problems .
Diseases can severely limit pecan production.
The major disease is pecan scab. The best way to control scab is to plant scab-resistant varieties. In many cases, pecan scab cannot be controlled on susceptible cultivars without spraying. However, sanitation can almost always help reduce losses from scab and other minor diseases. Nearly all fruit and foliage diseases of pecans, including scab, overwinter on plant parts infected the year before.