Disclaimer

PEAR PETAL FALL, FIRST THROUGH FIFTH COVER SPRAYS

Effectiveness rating: E = excellent, G = good, F = fair


Disease Effectiveness Suggested Chemicals 100 Gal Dilute Acre Concentrate
Scab E = 2, 6, 7, 9
 2. Topsin-M 70W + Ziram 76DF or WDG 4 oz + 1 lb 1 lb + 3 lb
Leaf spot E = 8
 4. 2Ziram 76DF or WDG 1.5-2 lb 6-8 lb 

G = 2, 4


Fire blight1 G = 5 5. Streptomycin 6.5 oz (80 ppm) 1.5 lb
Sooty blotch and fly speck
 E = 6, 7, 8
 6. Flint 50WG
 --
 2.0-2.5 oz


7. Sovran 50WG
 1.0-1.6 oz
 4.0-6.4 oz


8. 3Pristine 38WG
 --
 14.5 oz


9. 4Inspire Super 2.82EW
 --
 12 fl oz

1 CAUTION: See cautions about fire blight control under white bud spray, p. 70. Do not apply streptomycin closer than 30 days to harvest. Use of more than four streptomycin sprays per year may lead to streptomycin-resistant fire blight bacteria.

2 Do not apply more than 56 lb per acre per year of Ziram 76DF.

3 Limit the number of applications of Pristine, Flint and Sovran and similar modes of action to four per year. Do not make more than two sequential applications of Pristine before alternating to a fungicide with another mode of action.

PEAR PETAL FALL, FIRST THROUGH FIFTH COVER SPRAYS


Insects/Mites Effectiveness Suggested Chemicals 100 Gal Dilute Acre Concentrate
 Pear psylla (PP)1 E = 1, 2, 3, 9, 10, 11, 18, 23, 27, 29 1. Surround WP --
 25 lb

G = 4, 12, 21, 26 2. Assail 30SG -- 5.5-8.0 oz


3. Calypso 4F
 1-2 fl oz
 4-8 fl oz
    4. Imidan 70WSB 1 lb 3.5 lb
Tarnished plant bug (TPB) E = 5, 28, 30
 5. 2Carzol 92SP 6 oz 1 lb
  G = 1, 3, 21, 22


Stink Bugs (SB) E = 5, 28, 30
 6. Vendex 50W 6 oz 18 oz
  G = 1, 21, 22
 7. 3Apollo 42SC - 4-8 fl oz
Mites (ERM/TSM) E = 5, 7, 8, 10, 11, 17, 18, 19, 20, 29, 32
 8. 3Savey 50DF or Onager 1EC
 - 3-6 oz or 12-24 fl oz
  G = 6, 16
 9. Esteem 35WP
 -- 5 oz 
Plum curculio (PC) E = 4, 13
 10. 4Agri-Mek, Abba, Temprano 0.15EC, or Agri-Mek 0.7SC
 2.5-5 fl oz

0.5-1.0 floz
 10-20 fl oz

2.25-4.25 fl oz
  G = 1, 2, 3, 21, 27, 29,30
 11. 5Nexter 75WP  --  4.4-10.7 oz
Codling moth (CM) E = 4, 23, 24, 27, 28, 31
 12. Admire Pro or Alias 4F
 --
5 fl oz		 20 fl oz
8 fl oz
  G = 2, 3. 9, 13, 15, 25, 30
 13. Avaunt 30WDG -- 5-6 oz
Oriental fruit moth (OFM) E = 4, 15, 23, 24, 27, 28, 31
 15. 7Mating disruption
 -- See labels
  G = 2, 3, 13, 21, 25, 30
 16. Acramite 50WS -- 12-16 oz


17. Zeal 72WG
 --
 2-3 oz


18. Portal 5EC
 10 fl oz
 2 pt


19. Kanemite 15SC
 --
 31 fl oz


20. Envidor 2SC
 --
 16-18 fl oz


21. 8Belay 2.13SC
 --
 6-12 fl oz


22. Beleaf 50SG
 --
 2-2.8 oz


23. Delegate 25WG
 --
 6-7 oz


24. Altacor 35WDG
 --
 2.5-4.5 oz


25. Belt 4SC
 --
 3-5 fl oz


26. 9Movento 2SC
 --
 6-9 fl oz


27.  8Voliam Flexi 40WG
 --
 4-7 oz


28.  Voliam Xpress 1.25SC
 --
 6-12 fl oz


29. 8Agri-Flex
 1.5-2 fl oz
 5.5-8.5 fl oz


30. Bifenture 2EX
 --
 2.6-12.8 fl oz


31.  Exirel
 --
 8.5-17 fl oz


32. Nealta --
 13.7 fl oz

1 If PP is a problem, alternating sprays of Thionex or Imidan will improve control. If PP is not a problem, reduce insecticide rates for PP by 25%.

2 Do not apply after petal fall.

3 Apply only once per season, when eggs or young mites are present.

4 See comments on p. 33.

5 Use higher rates for PP and TSM.
6 See footnote 9, Apple Second Cover.
7 Mating disruption for CM and OFM should be initiated at petal fall.  See mating disruption note on page 45.
8.Consider withholding until after first cover, in order to protect pollinators.
9. Movento should not be applied after second cover.  Movento must be applied with a horticultural oil or a non-ionic spreading and penetrating adjuvant (not a sticker).

 
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Web Site Authors: Alan R. Biggs and Douglas G. Pfeiffer