Citrus pests can be controlled with Pinellia ternata juice.
Take 1 kg of freshly dug Pinellia ternata (crow-dipper) tubers, chop them, add 3 kg of water and grind into a slurry; for every 1 kg of slurry, add 30-40 kg of water and spray it on citrus trees; or chop 1 kg of Pinellia ternata, add 5 kg of water and boil for 2 hours, then after filtering dilute the stock solution 20-30 times and spray. The control effect against citrus scale insects, red spider mites and aphids reaches over 98%.
Take 1 kg of freshly dug Pinellia ternata (crow-dipper) tubers, chop them, add 3 kg of water and grind into a slurry; for every 1 kg of slurry, add 30-40 kg of water and spray it on citrus trees; or chop 1 kg of Pinellia ternata, add 5 kg of water and boil for 2 hours, then after filtering dilute the stock solution 20-30 times and spray. The control effect against citrus scale insects, red spider mites and aphids reaches over 98%.