The right time to release persimmons

The right time to release Phytoseiulus persimilis depends on the infestation conditions, the environmental conditions, and your goal in controlling the two-spotted spider mite. This timing plays an important role in the success of biological pest management.

1. Right time in terms of pest infestation

• Low or initial infestation:
• The best time to release is when the spider mite infestation has just begun and the pest density is still low. In these conditions, Persimilis can multiply rapidly and control the pest population.
• Moderate to severe infestation:
• If the infestation is severe, it may be necessary to repeat releases or use other biological control agents (such as predator combinations).

2. Appropriate time in terms of environmental conditions

Persimilis requires specific environmental conditions for activity and reproduction. Therefore, it is essential to adjust the greenhouse or field environment within this range:

1. Temperature:
   • The ideal temperature for the activity of presimilis is 20 to 30 degrees Celsius.
   • At temperatures above 30 degrees or below 15 degrees, its efficiency decreases.
2. Relative humidity:
   • The minimum suitable humidity is 60 percent.
   • The best performance is observed at humidity 70 to 90 percent, because low humidity It can dry out the eggs and immature stages of Prismilis.

• Light:
  • Release in the early morning or evening. At these times, the ambient temperature is cooler and heat stress for predators is avoided.

3. Timing by season

1. Spring and early summer:
   1. These seasons, when plant and mite growth increases, are the ideal time to release.

• Autumn and winter:
  1. In greenhouse conditions with appropriate temperatures, Persimilis remains effective. In open fields, if temperatures drop, its performance will be limited.

4. Interval between releases

• If the spider mite population is still high or the environment is not sufficient for the rapid Prismilis reproduction, you can repeat the release every 7 to 14 days to reduce the pest population.

Summary

• Best time: At the beginning of the infestation and in suitable environmental conditions (temperature: 20-30°C, humidity: 60-90%).
• Best time of day: Early morning or evening.
• Repetition: In case of moderate to heavy infestation, release every 7 to 10 days Continue.