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