How to prevent and control cherry blossom pests and diseases? Introduction to practical methods
How to prevent and control cherry blossom pests and diseases? Please provide guidance on methods. The following prevention and control methods for cherry blossom pests and diseases are for reference: 1. Cherry blossom pests and diseases include mulberry white scale (Pseudaulacaspis pentagona), various kinds of stinging caterpillars, and apple prominent moth (Phalera flavescens), etc. Mulberry white scale is mainly distributed in cherry blossom cultivation areas, occurs commonly, and is quite severe in individual fields. The damage has already caused the leaves to basically fall off, and the pest population...
How to prevent and control cherry blossom pests and diseases? Please provide guidance on methods
The following prevention and control methods for cherry blossom pests and diseases are for reference:
1. Cherry blossom pests and diseases include mulberry white scale (Pseudaulacaspis pentagona), various kinds of stinging caterpillars, and apple prominent moth (Phalera flavescens), etc.
Mulberry white scale is mainly distributed in cherry blossom cultivation areas, occurs commonly, and is quite severe in individual fields. The damage has already caused the leaves to basically fall off, and the pest population density is extremely high, appearing snow white both up close and from afar. It is speculated that the newly hatched nymph stage of mulberry white scale should be around late August to early September. The newly hatched nymph stage is the best time to carry out spray control. All growers should carry out joint prevention and joint control to keep the pest population base below the allowable economic level.
Control method: During the nymph stage, spray 1000-1500 times dilution of Sujieke, 1500-2000 times dilution of Supusha, or 150-200 times dilution of Jiemanling. Where the pest population density is relatively high, spray again after 7-10 days, and alternate the pesticides to prevent the scale insects from developing resistance. In addition, cherry trees with particularly high pest population density should be properly pruned, and the pruned parts should be gathered and burned to prevent further spread of the infestation.
2. Apple prominent moth is mainly distributed in cherry blossom cultivation areas, occurs commonly, and causes severe damage in individual fields, eating all the leaves and leaving only bare branches. At present, the insect stages are uneven; some larvae have already reached the 5th instar (first generation), while some larvae are still in the newly hatched stage, all between the 1st and 2nd instar (second generation). Now is the best time for spray control, and all farmers should seize the time to carry out control work. Control the damage caused by the pests.
Control pesticide: During the period of severe larval occurrence, spray 800-1000 times dilution of fenvalerate emulsion or other pyrethroid pesticides;
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