Peaches, nectarines, plums, apricots

• Dormant sprays
• Prebloom or 'popcorn' sprays
• Bloom sprays
• Petal-fall sprays
• Shuck-split sprays
• First and second cover sprays
• Summer cover sprays
• Preharvest sprays

Peaches, nectarines, plums, apricots
Dormant sprays

Apply before buds swell in spring.

Mites, scale

• Material
  dormant or summer oil
• Comments
  Oil smothers overwintering eggs of mites and scale.
  Apply oil at temperatures above 40 degrees Fahrenheit and not within 14 days before or after using sulfur, or captan.

Peach leaf curl, plum pockets

A key pest
or pest complex

• Material
  Bordeaux mixture
  or chlorothalonil
  or copper
• Comments
  For peach leaf curl, apply at leaf drop in late fall, and 1 to 2 additional applications in mid- to late winter before bud swell.
  For plum pockets, use of resistant plum cultivars is the preferred control measure. But for susceptible cultivars, apply chlorothalonil (or Bordeaux mixture, or liquid lime-sulfur) before bud swell.
  Copper for peach leaf curl only. Apply as a dormant spray in late fall during a period of dry weather.

Peaches, nectarines, plums, apricots
Prebloom or 'popcorn' sprays

Apply when buds show white, pink or red.

Plant bugs, stink bugs

• Material
  carbaryl
  or malathion
  or esfenvalerate
  or permethrin
  or gamma-cyhalothrin
• Comments
  Plant bugs and stink bugs feed on swelling fruit and leaf buds, causing the buds to dry up. When fruit buds are damaged, blossoms may never open or may be deformed.
  Use permethrin on peaches only.

Brown rot, scab, leaf spot

• Material
  captan
  or chlorothalonil
  or myclobutanil
  or sulfur
• Comments
  For brown rot, use chlorothalonil, captan, myclobutanil or thiophanate-methyl.

Peaches, nectarines, plums, apricots
Bloom sprays

Apply when 25 percent of blossoms are open. Do not use insecticides during the bloom period — Save the bees.

Brown rot, scab

• Material
  chlorothalonil
  or captan
  or myclobutanil
  or sulfur
  or thiophanate-methyl
  or propiconazole
• Comments
  See comments in "prebloom" section.
  For propiconazole, start applications in early spring, and spray every 21 days, making no more than 4 applications.

Powdery mildew, leaf spot

• Material
  myclobutanil
  or sulfur
  or thiophanate-methyl
  or propiconazole
• Comments
  For powdery mildew, sulfur provides good control.
  For propiconazole, start applications in early spring, and spray every 21 days, making no more than 4 applications.

Peaches, nectarines, plums, apricots
Petal-fall sprays

Apply when most of blossom petals have fallen.

Oriental fruit moth, plum curculio

A key pest
or pest complex

• Material
  carbaryl
  or malathion
  or esfenvalerate
  or permethrin
  or spinosad
  or gamma-cyhalothrin
• Comments
  Adult oriental fruit moth begin emerging in mid-April. First generation larva enter at a leaf axil near the tip of a shoot and bores down the central core for several inches, causing the terminal to wilt or "flag."
  Surface feeding by overwintering adult plum curculio can scar or misshape the fruit by harvest, while feeding by the larvae causes premature fruit drop.
  Use permethrin on peaches only.
  Spinosad for oriental fruit moth only.

Plant bugs, stink bugs

A key pest
or pest complex

• Material
  carbaryl
  or malathion
  or esfenvalerate
  or permethrin
  or gamma-cyhalothrin
• Comments
  Feeding on small fruit by plant bugs and stink bugs causes the fruit to fall or become scarred and malformed (cat-facing) as they grow. Populations of plant bugs are worst where weed control is poorest. Keep weeds mowed regularly.
  Use permethrin on peaches only.

Coryneium blight

• Material
  chlorothalonil
• Comments
  Apply 1 to 2 weeks after petal fall or at shuck-split.

Brown rot, scab

• Material
  chlorothalonil
  or captan
  or myclobutanil
  or sulfur
  or thiophanate-methyl
  or propiconazole
• Comments
  Make one additional application for scab at shuck-split.

Peaches, nectarines, plums, apricots
Shuck-split sprays

Apply about 10 days after petal-fall spray.

Brown rot, scab

• Material
  captan
  or myclobutanil
  or sulfur
  or thiophanate-methyl
• Comments
  Observe intervals between last application and harvest.

Mites

• Material
  summer oil
  or insecticidal soap
  or pyrethrins and rotenone
• Comments
  To prevent damage to foliage or fruits, never use a summer oil with captan, carbaryl, or other sulfur-containing pesticides. Allow at least 14 days between applications of sulfur-containing compounds and the use of a summer oil. Apply oil at temperatures above 40 degrees Fahrenheit and below 90 degrees Fahrenheit.
  For insecticidal soap repeat application 3 to 4 days later.
  For pyrethrin and rotenone premix, repeat application every 5 to 10 days or as needed, do not apply within 1 day of harvest.

Plum curculio oriental fruit moth

A key pest
or pest complex

• Material
  esfenvalerate
  or malathion
  or carbaryl
  or permethrin
  or spinosad
  or gamma-cyhalothrin
• Comments
  See comments in "petal-fall sprays" section.
  Spinosad for oriental fruit moth only.

Plant bugs, stink bugs

A key pest
or pest complex

• Material
  carbaryl
  or malathion
  or esfenvalerate
  or permethrin
• Comments
  See comments in "petal-fall sprays" section.

Powdery mildew

• Material
  myclobutanil
  or sulfur
  or thiophanate-methyl

Peaches, nectarines, plums, apricots
First and second cover sprays

Apply 10 days after shuck-split and again 10 days later.

Plum curculio, oriental fruit moth

A key pest
or pest complex

• Material
  carbaryl
  or malathion
  or esfenvalerate
  or permethrin
  or spinosad
  or gamma-cyhalothrin
• Comments
  See comments in "petal-fall sprays" section.
  Spinosad for oriental fruit moth only.

Plant bugs, stink bugs

A key pest
or pest complex

• Material
  carbaryl
  or malathion
  or esfenvalerate
  or spinosad
  or gamma-cyhalothrin
• Comments
  See comments in "petal-fall sprays" section.

Mites

• Material
  summer oil
  or insecticidal soap
  or pyrethrins and rotenone
• Comments
  See comments in "shuck-split" section.

Lesser peachtree borer

• Material
  carbaryl
  or esfenvalerate
  or permethrin
• Comments
  or spinosad
  or gamma-cyhalothrin
• Comments
  Adult moths typically begin to emerge in mid-May (mid-Missouri); apply weekly sprays during moth flight (through June). Larvae can become established only in damaged tissue (pruning wounds, cankered areas, sun-scalded bark, etc.). Once established, the larvae feed on growing bark and may enlarge the damaged area, often girdling the limb
  Direct sprays from ground level up the trunk and including the main scaffold limbs, wetting the bark thoroughly.

Brown rot, scab

• Material
  captan
  or myclobutanil
  or sulfur
  or thiophanate-methyl

Peaches, nectarines, plums, apricots
Summer cover sprays

Apply at 10- to 14-day intervals.

Oriental fruit moth

A key pest
or pest complex

• Material
  carbaryl
  or malathion
  or esfenvalerate
  or permethrin
  or spinosad
  or gamma-cyhalothrin
• Comments
  Later-generation oriental fruit moth larvae may enter the fruit near the stem end and make feeding burrows that often extend to the pit.

Mites

• Material
  summer oil
  or insecticidal soap
  or pyrethrins and rotenone
• Comments
  See comments in "shuck-split" section.

Powdery mildew

• Material
  sulfur
  or propiconazole
• Days between last application and harvest
  Table 2

Aphids

• Material
  malathion
  or insecticidal soap
  or neem
  or pyrethrins and rotenone

Brown rot

• Material
  captan
  or myclobutanil
  or sulfur
  or thiophanate-methyl
• Days between last application and harvest
  Table 2

Peaches, nectarines, plums, apricots
Preharvest sprays

Apply 1 to 2 weeks before harvest.

Green June beetle. Japanese beetle

• Material
  carbaryl
  or malathion
  or neem
  or pyrethrins and rotenone
  or gamma-cyhalothrin
• Comments
  Adult green June beetles and Japanese beetles can feed on both green and ripening fruit.
• Days between last application and harvest
  Table 2

Spotted wing drosophila

• Material
  spinosad
• Comments
  Insecticide treatment should begin when fruit first begins to color and continue through harvest. For more on SWD, see Lincoln University Cooperative Extension publication FS18A2013, Monitoring for Spotted Wing Drosophila (PDF).
• Days between last application and harvest
  Table 2

Oriental fruit moth

• Material
  carbaryl
  or malathion
  or esfenvalerate
  or permethrin
  or spinosad
• Comments
  Adult flights of oriental fruit moth may occur at this time.
• Days between last application and harvest
  Table 2

Aphids

• Material
  carbaryl
  or insecticidal soap
  or neem
  or pyrethrins and rotenone
• Comments
  See comments in "summer cover sprays" section.
• Days between last application and harvest
  Table 2