How to prevent and control magnolia pests? Sharing practical tips

The magnolia flower looks very much like a lotus, and when in full bloom it is extremely beautiful, loved by many people and highly valued for its ornamental appeal; it is an ideal flower for beautifying courtyards. The magnolia is the city flower of Shanghai. Below, the editor shares with you.
Pest control measures for magnolia:
If pests occur, use 80% dichlorvos emulsifiable concentrate at 800 times dilution or 50% fenitrothion emulsifiable concentrate at 800 times dilution to kill the large bagworm moth;
Use Bt emulsifiable preparation at 800 times dilution or 50% fenitrothion emulsifiable concentrate at 800 times dilution to kill the pine hawkmoth;
Use 40% dicofol at 800 times dilution or 5% hexythiazox at 2000 times dilution to kill red spider mites;
Use Green Weilei at 500 times dilution to kill longhorn beetles;
Use 50% phoxim emulsifiable concentrate at 1000 times dilution as a root drench to kill white grubs.