Damage symptoms
In the early stages of leaf damage, many small chlorotic spots appeared. As the degree of damage increased, the leaves were severely chlorotic, showing pale red or yellowish color, causing fallen leaves, and severely affecting tree vigor and fruit setting rate.
Biological control
Biological control based on natural enemies is currently the dominant technology for pest control.
How to use the new Papaya mites: In the early stage of pest occurrence, when the density is low (usually the number of pupae per lobe is less than two), it can be released preventively, releasing 70-100 bags per acre. If the weather is clear when released, Temperatures in excess of 30°C should be released in the evening and can be released on a cloudy or cloudy day.
The method of using long-blown blunt tendrils is to release blunt bristles at the early stage of pest occurrence. If leaf bristles only appear sporadically, it can release blunt dugouts in the central area of ​​pest occurrence, with about 40 heads per square meter. . If the entire plots have occurred, to be hairy and harmful mites Amblyseius density ratio of 1: 3-1: 5 is released, two weeks after the release time, the release time should be chosen after 4:00 pm, the better. Suspension method or a method using the applicator.
Just release harmful mites found on the crop the best results, the release of the head density of 3-6 / m², the pest mites damage releasably center 20 / m²; or less according to Phytoseiulus Chile: Chile small phytoseiid mite use mites: prey (including eggs) release is 1:10. Released again after two weeks.
Precautions
Insecticides can kill predators, and chemical pesticides need to reach a safe period after use to release predators.
High temperature and drought conditions are not conducive to colonization by predators, and the relative humidity should be greater than 60%.
Predatory mites are living creatures and are not resistant to storage and should be released immediately after arrival.
Do not shake the prey product packaging severely, otherwise it will cause predators, delirium, or death.
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