Effectiveness rating: E = excellent, G = good, F = fair
| Disease | Effectiveness | Suggested Chemicals | 100 gal Dilute | Acre Concentrate |
| Scab | E = 1, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 19, 20, 21 | 1. Dodine 65W | 8 oz | 1.5 lb |
| 2. Captan 50W | 1.5 lb | 6.0 lb | ||
| G = 2, 13 | 3. Rubigan 1E + Captan 50W | 3 fl oz + 1 lb | 9 fl oz + 3.25 lb | |
| F = 22 | 4. Rubigan 1E + Dodine 65W | 3 fl oz + 4 oz | 8-9 fl oz + 1 lb | |
| 5. Rubigan 1E + Ziram 76DF or WDG | 3 fl oz + 1 lb | 9 fl oz + 3.25 lb | ||
| Powdery Mildew2 | E = 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 19, 20, 21 | 6. Rubigan 1E + mancozeb 75DF | 3 fl oz + 1 lb | 9 fl oz + 3 lb |
| G = 14, 15, 16, 17, 22 | 7. Rubigan 1E + Polyram 80DF | 3 fl oz + 1 lb | 9 fl oz + 3 lb | |
| 8. Rally 40WSB + Captan 50W | 1.25-2.0 oz + 1 lb | 5.0- 7.5 oz + 3.25 lb | ||
| Rusts4 | E = 5, 6, 7, 8, 9, 10, 11, 12, 15, 16, 17, 21 | 9. Rally 40WSB + Dodine 65W | 1.25-2.0 oz + 4 oz | 5.0-7.5 oz + 1 lb |
| G = 3, 4, 13, 14 | 10. Rally 40WSB + Ziram 76DF or WDG | 1.25-2.0 oz + 1 lb | 5.0-7.5 oz + 3.25 lb | |
| 11. Rally 40WSB + mancozeb 75DF | 1.25-2.0 oz + 1 lb | 5.0-7.5 oz + 3 lb | ||
| 12. Rally 40WSB + Polyram 80DF | 1.25-2.0 oz + 1 lb | 5.0-7.5 oz + 3 lb | ||
| Fireblight | E = 23 | 13. 3Ziram 76DF or WDG | 2 lb | 6.5 lb |
| 14. Procure 50WS + captan 50W | 3.0 oz + 1 lb | 12.0 oz + 3 lb | ||
| Rots and frogeye leaf spots | G = 2, 13, 19, 20 | 15. Procure 50WS + mancozeb 75DF | 3.0 oz + 1 lb | 12.0 oz + 3 lb |
| F = 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 | 16. Procure 50WS + Polyram 80DF | 3.0 oz + 1 lb | 12.0 oz + 3 lb | |
| 17. Procure 50WS + ziram 76DF or WDG | 3.0 oz + 1 lb | 12.0 oz + 3.25 lb | ||
| 19. Sovran 50WG | 10-16 oz | 4.0-6.4 oz | ||
| 20. Flint 50WG | -- | 2.0-2.5 oz | ||
| 21. Triadimefon 50DF + Dodine 65W | 0.5-1 oz + 8 oz | 2-4 oz + 1.5 lb | ||
| 22. Sulfur | 2-3 lb | 7-10 lb | ||
| 23. Streptomycin | 0.3 lb | 1.2 lb |
1 See cautions 1, 2 and 3 under 1/4-1/2 inch green spray.
2 Excellent powdery mildew control is expected when the Rally or Rubigan is used on a 7-10 day interval for scab control. Bayleton should give similar mildew control when applied on a 7-10 day schedule. See also comments about disease management on page 59. Do not apply more than 24 oz of Triadimefon 50DF per acre per season. Do not apply more than 60 lb of Captan 50W per acre per year.
3 Do not apply more than 56 lb Ziram DF or WDG per acre per year.
4
See cautions about
quince rust under pink and bloom sprays.
APPLE PETAL FALL SPRAY 1
Effectiveness rating: E = excellent, G = good, F = fair
| Insects/Mites | Effectiveness | Suggested Chemicals | 100 gal Dilute | Acre Concentrate |
| 1.
Lorsban or Yuma 4E |
3 pt |
-- |
||
| Redbanded leafroller (RBLR)3 | E = 2, 27, 35 |
2. 2Lannate 90SP | 4 oz | 12 oz |
| G = 3, 4, 5, 22, 24, 36 |
3. Guthion 50W | 8-10 oz | 1.5-2
lb |
|
| Curculio (PC)3 | E = 3, 4, 17 |
4. Imidan 70WSB | 16-21oz | 3-4 lb |
| G = 14, 15, 16, 28, 33, 36 |
5. Bacillus thuringiensis | See label | See label | |
| Tufted apple bud moth (TBM) | G = 6 | 6. Movento 2SC |
- | 6-9 fl oz |
| 7. Apollo 42SC | -- | 4-8 fl oz | ||
| 8.
Savey 50DF or Onager 1 EC |
-- | 3-6 oz or 12-24 fl oz |
||
| Rosy apple aphid (RAA) | E = 6, 14, 15, 16, 23, 25, 33 |
9. Aza-Direct | -- | 1 qt |
| G = 2, 9, 10, 12, 36 |
10. Thionex 50WP or 3EC | 1 lb or 21 fl oz | 3 lb or 4 pt | |
| 11. Carzol 92SP | 6 oz | 1lb | ||
| Mites (ERM) | E = 7, 8, 13, 18, 29, 30, 31, 32, 34 |
12.7Vydate 2L | 1 pt | 3 pt |
| G = 11, 12, 21, 26 |
13. 8Agri-Mek, Abba, or Temprano 0.15EC | 2.5-5 fl oz | 10-20 fl oz | |
| Green fruitworms (GFW)4 | G = 2, 3, 4, 5, 22, 24, 27, 36 |
14. 18Assail 30SG | -- | 2.5-8.0 oz |
| 15.
Actara 25WG |
-- |
2.0-5.5
oz |
||
| 16. 19Calypso
4F |
1-2 fl
oz |
4-8 fl
oz |
||
| Defoliating caterpillars5 | G = 2, 3, 4, 5, 36 |
17. Avaunt 30WDG | -- | 5-6 oz |
| Tentiform leafminers (TLM) | E = 12, 13, 14, 15, 16, 25, 33 |
18. 9Nexter
75WP |
-- | 4.4-5.2 oz |
| G = 9 | 19. 10Isomate-C+,
CTT, CM/OFM TT |
Not a spray | -- | |
| White apple leafhopper (WALH)6 | E = 2, 11, 14, 15, 16, 25, 33 |
20. Disrupt CM-Xtra | Not a spray | -- |
| G = 10, 12, 13, 22, 24, 28 |
21. Vendex 50W | 6 oz | 18 oz | |
| Codling moth (CM) | E = 35 |
22. 12Sevin 50W | 2 lb | 6 lb |
| G = 19, 20, 37 |
||||
| Oriental fruit moth (OFM) | E = 3, 4, 36 |
|||
| G = 2, 5, 9, 14, 16, 17, 22, 24, 27, 35, 37 |
23. Beleaf 50SG |
-- | 2-2.8 oz |
|
| European apple sawfly (EAS)11 | E = 3, 4, 14, 16, 17 |
24. 12Sevin XLR PLUS | 8-10 fl oz | 1.5-2 pt |
| |
G = 15, 22, 24, 36 |
25. 14Provado 1.6F | 1-2 fl oz | 4-8 fl oz |
| Mullein bug (MB) | E
= 11, 14, 16 |
26. 15Ultra-Fine oil | 2 gal | - |
| G = 10, 15 |
27. 17Intrepid 2F | -- | 8-16 fl oz | |
| Dogwood borer (DB)20 | E = 1, 36 |
28. Surround WP | 25 lb | -- |
| G = 14 |
29. 8Acramite 50WS | -- | 12-16 oz | |
| San Jose scale (SJS) | G = 6 | 30. Zeal 72WDG |
-- |
2-3 oz |
| 31. Portal 5EC |
10 fl oz |
2 pt |
||
| 32. Kanemite 15SC |
-- |
31 fl oz |
||
| 33. Clutch 50WDG |
-- |
3 oz |
||
| 34. Envidor 2SC |
-- |
16-18 fl oz |
||
| 35. Rimon 0.83EC |
-- |
20-40 fl oz |
||
| 36. 13Lorsban
75WG |
10 oz |
2 lb |
||
| 37. Isomate-CM/OFM TT or
Check-Mate CM-OFM Dual |
not a spray |
1 CAUTION: To avoid killing bees, do not spray pesticides on open blooms of trees or ground vegetation. See pesticide hazard to bees (p. 25). This is an excellent time to hang pheromone traps for codling moth and the leafroller complex.
2 Lannate used alone does not provide control beyond 3-4 days.
3 Monitor orchards carefully for newly hatched leafroller larvae and inward migration of curculio. Hang pheromone traps for tufted apple bud moth and variegated leafroller to establish biofix and monitor activity.
4 GFW, if present, must be controlled at this time to prevent fruit injury (see note under tight cluster spray for monitoring method).
5 Climbing cutworms (a type of defoliating caterpillar) hide in ground litter during the day and feed in trees at night. Heaviest damage occurs in tree tops and ends of limbs. Cutworms may severely injure young trees. Gypsy moths hatch beginning at bloom and are dispersing into orchards at this time.
6 Examine undersides of leaves for newly hatched WALH nymphs. Nymphs move rapidly forward or backward when disturbed.
7 Likely to thin fruit when used at this time.
8 See comments on p. 27.
9 See comments on p. 31.
10 For CM mating disruption apply earlier than conventional sprays for this pest. See note, p. 23.
11 Control EAS if a problem last year, or if 5.5 adults are captured beteween pink and petal fall on white sticky traps if a prebloom insecticide was applied. If no prebloom insecticide was applied, use a threshold of 4.7 adults.
12 Caution should be exercised in the use of Sevin because of potential to cause mite outbreaks. Preliminary research indicates that the XLR PLUS formulation may be less disruptive to mite management programs than other formulations.
13 Increase rate to 2 lb/100 gal for handgun application to control DB.
14 Lower rate is effective against WALH
15 Good control of ERM may be achieved by 3 applications of Ultra-Fine oil at 2-week intervals starting at petal fall.
17
Use 12-16 fl.
oz/A for OFM control.
182.5-4.0
oz/A
for RAA, TLM, WALH, MB; 5.5-8.0 oz.A for PC, OFM, EAS; 8.0 oz/A as a
drench spray for lower tree trunks. The
addition of 0.5% oil will improve control of OFM if using less than 8.0
oz/A.
19 Low
rate is
for RAA, TLM, WALH and MB.
20
Handgun
applications
directed to burrknot-affected areas are most effective for DB.
Pheromone
traps may be used to determine periods of male moth activity. These
traps
should be hung about 6 feet off the ground near the tree trunk.
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