Last year, I had lot of Apple, Plums and Persimmon fruit at backyard.
But, this year, not even a single trace of fruit.
I noticed plum tree has curled leave instead of regular leave. I cut a portion of curled leave branch to near by nursery, showed them something affected it.
They rightly pointed out it is APHIDs that spoiled it and gave a solution to apply/fix it. The plant is back to normal now.
But, I still do not know What are the common insects affect Apple Tree and Fuyu Persimmon tree.
bark or in orchard litter. Pupation takes place in the spring. Moths begin emerging about the time that apple trees are in bloom and lay an average of 50 to 60 eggs on leaves, twigs and fruits. Once eggs hatch the larvae feed briefly on leaves, then damage fruit by boring into the centers. Larvae feed for three weeks, then leave to seek a suitable place to spin cocoons. There are two generations per year.
How to Control
Scrape loose bark in early spring to remove overwintering cocoons and then spray All Seasons® horticultural oil to eradicate eggs and first generation early instar stages.
Beneficial nematodes are microscopic, worm-like parasites that actively hunt, penetrate and destroy immature stages of this pest. Spray on trunks and main branches, and also over the soil out to the drip line for a 60% to 90% mortality in pre-pupae.
Use pheromone traps to determine the peak flight period for moths, then release trichogramma wasps to attack eggs. Pheromone traps will also help reduce male moths where populations are low and trees are isolated.
Bt-kurstaki (Bt) and Spinosad sprays are moderately effective since the larvae spend so little time feeding outside the fruit. Apply during egg hatching only (consult with a local extension agent for exact times).
Surround WP — a wettable kaolin clay — can be used to deter a broad range of fruit tree pests (and diseases), and will reduce codling moth damage by 50-60%. Apply before moths arrive and continue for 6-8 weekly applications, or until the infestation is over.
In areas of severe infestation, spray plant-derived insecticides when 75% of petals have fallen, followed by three sprays at 1-2 week intervals. These natural pesticides have fewer harmful side effects than synthetic chemicals and break down more quickly in the environment.
Tip: In spring, band tree trunks tightly with corrugated cardboard strips (4- to 6-inches wide) to provide a site for larvae to spin their cocoons. Remove and destroy t