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PEAR WHITE BUD (POPCORN) SPRAY

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


Disease Effectiveness Suggested Chemicals 100 Gal Dilute Acre Concentrate
Scab E = 1, 2, 3, 4 1. Topsin-M 70W + Mancozeb 75DF 4 oz + 1 lb 1 lb + 3 lb
Leaf spot E = 1, 2, 4 2. Topsin-M 70W + Ziram 76DF or WDG 4 oz + 1 lb 1 lb + 3 lb
Fire blight1 G = 5 3. Rubigan 1E 3 fl oz 9 fl oz
    4. Ziram 76DF or WDG 1.5-2 lb 6-8 lb
    5. Streptomycin 6.5 oz (80 ppm) 1.5 lb

1 CAUTION: FIRE BLIGHT. The conditions favorable for fire blight include all of the following: (1) open blossoms and succulent young growth; (2) a temperature of 65F or higher; and (3) rainfall, or a relative humidity of 60% or higher. Apply the first streptomycin spray just before the earliest blossoms open and repeat at 5-day intervals until petals on latest blossoms have fallen. If streptomycin is applied alone, the rate may be reduced to 60 ppm (5 oz/100 gal dilute; 15 oz/A concentrate). The effectiveness of streptomycin can be increased by including the adjuvant Regulaid at the rate of 1 pint per 100 gal of tank mix. Apply streptomycin in at least 50 gallons of water per acre.

PEAR WHITE BUD (POPCORN) SPRAY


Insects/Mites Effectiveness Suggested Chemicals 100 Gal Dilute Acre Concentrate
Pear psylla (PP) E = 1, 2, 3, 5, 6, 7, 8, 9, 10, 17, 20, 21
1. 1Asana XL 0.66EC 3 fl oz 9 fl oz
  G = 4, 12
2. 1Pounce 3.2EC 4 fl oz  12 fl oz
Tarnished plant bug (TPB) E = 1, 2, 3, 6, 7, 8, 11, 13, 18, 19, 21, 23
3. 1Ambush 2EC 6 fl oz 18 fl oz
  G = 4, 5, 10, 22
4. Thionex 50WP or 3EC 1.5 lb or 1 qt 5 lb or 3.3. qt
 Green fruitworms (GFW)  E = 1, 2, 3, 6, 7, 8, 11, 18, 19, 21, 23
5. Surround WP 25 lb --
   G = 4 6. Danitol 2.4EC -- 16-21 fl oz


7.  Warrior 1CS, Lambda Cy 1EC, Silencer 1EC or Warrior 2CS
--
2.6-5.1 fl oz or 1.3-2.5 fl oz
Mites (ERM/TSM) E = 13, 15, 16
8. Proaxis 0.5CS
--
2.6-5.2 fl oz

G = 6, 14
9. Assail 30SG -- 8.0 oz


10. Calypso 4F
1-2 fl oz
4-8 fl oz


11. Decis 1.5EC -- 1.9 fl oz
 
12. Imidan 70WSB 1 lb 3.5 lb


13. Carzol 92SP 6 oz 1 lb
    14. Vendex 50W 6 oz 18 oz
    15. 2Apollo 42SC - 4-8 fl oz
    16. 2Savey 50DF or Onager 1EC
- 3-6 oz or 12-24 fl oz
    17. Esteem 35WP - 5 oz


18. Battalion 0.2EC
--
7.0-14.1 fl oz


19. Baythroid XL 1EC or Tombstone 2EC
--
2.0-2.4 fl oz


20. Dimilin 2L
--
40-48 fl oz


21. Mustang Max 0.8 EC
--
4 fl oz


22. Beleaf 50SG
--
2-2.8 oz


23. Bifenture 2EC
--
2.6-12.8 fl oz

1 Pyrethroids may be applied no more than twice during the prebloom period. Monitor ERM closely postbloom because these products are highly toxic to predators of ERM.

2 Apply only once per season, when eggs or young mites are present.
 
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Web Site Authors: Alan R. Biggs and Douglas G. Pfeiffer