Clean up and destroy all old shucks and debris. Twig girdlers Pick up and discard girdled twigs and limbs. Many girdled twigs do not fall from the tree. Remove as many of these as possible. Fall webworms Remove and destroy webs when they are first noticed.
Pecan weevils Pick up and destroy infested nuts as they fall.
Nuts should be picked up at least twice per week. Table 3 . Early defoliation caused by diseases or insects and nutrient deficiencies directly influences filling. Drought also causes failure to fill, if it occurs late in the growing season. The shell is formed earlier and filling occurs later in the season.