Table of Contents
- 1 How do you tell if you should not eat an apple?
- 2 How do you control the apple scale in San Jose?
- 3 How do you treat scales on apple trees?
- 4 Which of the following is the pest of apple?
- 5 Why is my apple bruised on the inside?
- 6 Why do bruised apples taste bad?
- 7 How do you get rid of San Jose scale?
- 8 Where can I find information on reduced insecticide Apple management programs?
How do you tell if you should not eat an apple?
Here are a few indications that an apple has begun to go bad:
- soft spots or bruising.
- wrinkled skin.
- holes and brown blemishes.
- liquid oozing from its skin.
- a mushy texture.
- a mealy or bland and grainy taste.
How do you control the apple scale in San Jose?
Use pheromone traps to detect the presence of males. Place traps on the northern and eastern side of trees at a height of six to seven feet, and check weekly. Infested branches should be pruned out to reduce the population and improve spray penetration.
What is an indication of a heavy San José scale infestation?
Usually the first indication that San Jose scale has infested an orchard is finding infested fruit during harvest or pack- ing, or finding infested tree limbs during pruning. The first flight of males can be monitored with pheromone traps in spring.
What kills San José scale?
There are a number of natural enemies that can be used to control San José scale. The most common predatory insects and naturally occurring parasitoid wasps include Cryptolaemus (Cryptolaemus montrouzieri), green lacewings (Mallada signata) and Chilocorus beetles (Chilocorus circumdatus).
How do you treat scales on apple trees?
If you have scales on your trees, you can spray them with a horticultural oil. This will smother scales and also mites and other soft-bodied insects. Horticultural oil is approved for organic production and is used by both organic and conventional growers.
Which of the following is the pest of apple?
Major pests of apple
| Woolly aphid, Eriosoma lanigerum | Symptoms | Identification |
|---|---|---|
| San Jose scale, Quadraspidiotus perniciosus | Symptoms | Identification |
| Codling moth, Cydia (=Carpocapsa) pomonella | Symptoms | Identification |
| Cottony cushion scale, Icerya purchasi | Symptoms | Identification |
| Stem borer, Apriona cinera | Symptoms | Identification |
How do you get rid of scales on apple trees?
Does San Jose scale produce honeydew?
San Jose scales are small, hemispherical and look almost like little mountains to me. A large quantity of a sweet sticky liquid called honeydew is excreted by scale insects. Honeydew can make a sticky, shiny mess on the plant and nearby furniture and floors. A black fungus called sooty mold may grow on the honeydew.
Why is my apple bruised on the inside?
The Apple Maggot Fly Lifecycle The eggs are deposited just under the skin. The eggs hatch into maggots (after about a week) which feed and tunnel inside the flesh of the apple, leaving the apple bruised and tunneled on the inside.
Why do bruised apples taste bad?
When you drop an apple, the cells on the receiving end of the apple break and are dead. This will result in the release of reactive oxygen species, and a bunch of other stuff – thus, that part of the apple turns brown-ish.
What is San Jose scale on apples?
San Jose scale is an extremely important indirect pest of apples, pears, peaches, and plums. It is a sucking insect that injects a toxin into the plant as it feeds causing localized discolorations. The presence of reddish blemishes on fruit at harvest indicates potentially damaging numbers on the trees.
Will the San Jose scale Kill my Tree?
Left uncontrolled, San Jose scale can kill limbs or even the entire tree in just a few years. San Jose scale overwinter as immobile immature scales on the tree. In the spring, the tiny winged males emerge and mate with the wingless females, and about one month after the start of the male flight, the first crawlers can be seen.
How do you get rid of San Jose scale?
Commercial traps and lures are available to monitor San Jose scale activity. A hand lens is needed to see the crawler and adult stages. Pheromone traps for this insect should be placed in scale infested trees either prior to or during bloom.
Where can I find information on reduced insecticide Apple management programs?
For more information on reduced insecticide apple management programs, see ENTFact 201, Controlling Apple Pests. CAUTION! Pesticide recommendations in this publication are registered for use in Kentucky, USA ONLY!