planting the blueberry in the greenhouse
In current year, growing the blueberry in greenhouse including multi span film greenhouse and polycarbonate greenhouse, is widely to cultivation.
But there are some diseases for the blueberry when are growing in the greenhouse, here tell you how to do
Comprehensive control program for blueberry gray mold
Blueberry gray mold is a common disease in blueberry cultivation, especially in environments with high humidity and low temperature.
Blueberry gray mold is a fungal disease caused by Botrytis cinerea, which mainly attacks the flowers, fruits, leaves, fruit stalks, branches and other organs of blueberries. The disease is prone to occur under low temperature and high humidity conditions. The suitable temperature is around 20℃, and the relative humidity of the air is above 90%, which is most conducive to the growth of mycelium.
Prevention and control plan for blueberry gray mold in greenhouse cultivation
1. Environmental control
Temperature and humidity management:
During the day, keep the temperature in the greenhouse at 22-25℃ and the relative humidity at 60-70%.
Nighttime temperature is maintained at 12-15℃ to avoid sudden temperature drops.
Ventilation management:
Open the vents gradually after 10 am on sunny days and close them before 4 pm.
On rainy days, extend the ventilation time appropriately, but pay attention to heat preservation.
Dehumidification measures:
Use a dehumidifier or lime to absorb moisture and reduce the humidity in the greenhouse.
Install a circulating fan to promote air circulation.
2. Cultivation management
Drainage system:
Set up drainage pipes to prevent evaporation of accumulated water and increase humidity.
Adopt high ridge cultivation, and the ridge height is recommended to be maintained at 30-40cm to facilitate drainage.
Plant management:
Prune overcrowded branches in time to keep the plants ventilated and light-permeable.
Remove diseased fruits and leaves and destroy them in a centralized manner.
Flower and fruit management:
Shake flowers in time during flowering to promote petal shedding.
Thinn out overcrowded inflorescences to maintain a reasonable amount of fruit.
. Physical prevention and control
Warming measures:
Use heating equipment (such as heaters, floor heating lines) to increase the temperature in the greenhouse and inhibit the reproduction of gray mold fungi.
Ultraviolet lamp:
Install ultraviolet lamps and irradiate regularly to kill pathogen spores floating in the air.