Diseases
a) Fire blight (Erwinia amylovora):
- It spreads from tree to tree primarily during the bloom period.
- Where infection is already present, or occurs later, the infected areas should be pruned out.
- To control this disease, foliar spray of streptomycin in 50 ppm at 5-12 times throughout the spring and early summer is recommended.
b) Pear decline:
- Caused by mycoplasma transmitted by pear psylla.
- Can be controlled by controlling the population of pear psylla.
