Papaya mosaic virus disease is transmitted by aphids, thrips, and whiteflies. Use mushroom proteoglycan (or lentinan) plus natural brassinoids plus octostrobin acetate (or chlorobromoisocyanuric acid) plus zinc sulfate plus thiamethoxam (or acetamiprid) for control, every 7 to 10 Spray on the leaves once a day and spray 2 to 3 times continuously to inactivate the virus, weaken the activity of the virus, inhibit the reproduction of the virus, and kill the virus and aphids, thrips, and planthoppers that transmit the virus, thus preventing the disease and spread.

Papaya anthracnose. Use bromostrobin, or difenoconazole, or copper thiacetin, or copper thiacetin, or prochloraz, or pyraclostrobin, or zinc, or prozine, etc. for control.

Papaya blight. Use 2500 times of 52.5 oxazofen and cymoxanil water-dispersible granules, or 600 times of 58 methacrylate, manganese and zinc wettable powder, or 600 times of 72 oxazofen and manganese and zinc wettable powders, or 600 times of 69 acetonide. Manganese-zinc wettable powder, or 2000 times 50 times azoxystrobin water dispersant spray for control, the effect is very good.

For aphid damage, use acetamiprid, imidacloprid, veratrine, pymetrozine, nitenpyram, fenoxycarb, carbosulfan, thiamethoxam, thiazinone, and biphenyl pyrethroids, etc. for prevention and control.

For thrips damage, use spinosad, spinosad ethyl, veratrine, acetamiprid, imidacloprid, pymetrozine, nitenpyram, fenoxycarb, and fenoxycarb Budweiser, thiamethoxam, thiazinone, bifenthrin, etc. are used for control.

For leaf roller damage, use emamectin, abamectin, chlorantraniliprole, indoxacarb, matrine, Bacillus thuringiensis, cotton bollworm nuclear polyhedrosis virus, chlorbenzuron, etc. Diflubenzuron and other control effects are very good.

Scale insects cause damage. Use foliar spraying of thiazinone, thiamethoxam, fenoxycarb, acetamiprid, chlorpyrifos, veratrine or matrine, etc., as long as it is sprayed on the scale insects, the scale insects will be killed. When preventing and controlling scale insects, you must be careful not to use the highly toxic and highly toxic methotrexate (quick culling) to avoid polluting the environment and endangering human health.