Mummies

Pest Management Alliance

2000

Report submitted: Feb. 15, 2000

Trees were evaluated for mummies on January 21, 2000. Approximately 2.6% of each variety was checked. In addition to counting the mummies remaining in the trees, samples were brought in and examined for infestation of live navel orangeworm. These samples were not variety specific but represented the in orchard infestation of navel orangeworm. This was due to the fact that hard shell varieties had the most mummies and soft shell varieties had very few.

It was noted that there were very few mummies on the ground. By returning to the orchard after dark, we found a lot field mice. It is assumed they are feeding on the mummies that fall to the ground.

Prior to counting, the grower shook the trees to remove mummies. He has agreed to send in poling crews to remove the remaining mummies in the reduced input blocks.

 

 

Average Number of Mummies per Tree

Variety

Conventional

Reduced Input

Fritz

1.035

.100

Nonpareil

0

.035

Sonora

0

.030

Monterey

0

NA

Mission

3.635

.935

Butte

0.735

.535

Padre

6.670

5.730

Thompson

0

.200

 

 

Overwintering San Jose Scale

Pest Management Alliance

2000

Report submitted: Feb. 15, 2000

On February 1, 2000 the orchard was evaluated for overwintering San Jose scale and European red mite eggs. Twenty twigs per block were gathered from Sonora, Butte and Padre, the most susceptible varieties. Samples were brought back to the lab where scale and mite eggs were counted.

The only location in the orchard that had SJS and mite eggs was the north west corner. The reduced input block had 1.25 SJS and 11.3 European red mite eggs per sample and the conventional block had .05 SJS and .25 European red mite. All other locations in the orchard were free of these pests at this time.