Podocarpus is covered with white hairs, like mold filament, and there are yellow spots on the leaves

Podocarpus is covered with white hairs, like mold filament, and there are yellow spots on the leaves, what should I do? It should be sick, and if you are infected, you should go to the market and buy some medicine.

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Thank you for your patience: podocarpus likes fertilizer, should be applied diligently, fertilizer is mainly nitrogen fertilizer, you can add an appropriate amount of alum, and make alum fertilizer water. During the growing period, fertilization can be applied once every 1 or 2 months, and fertilization can be carried out at the same time in combination with watering (the ratio of water to fertilizer is 9:

1）。For large-scale planting, semi-orchard-like furrow application can be used, and 300 500 grams of instant compound fertilizer can be applied each time. Potted plants can be sprayed with "potassium dihydrogen phosphate of fertile leaves" each time.

Hello, happy to answer your <>

Thank you for your patience: podocarpus likes fertilizer, should be applied diligently, fertilizer is mainly nitrogen fertilizer, you can add an appropriate amount of alum, and make alum fertilizer water. During the growing period, fertilization can be applied once every 1 or 2 months, and fertilization can be carried out at the same time in combination with watering (the ratio of water to fertilizer is 9:

1）。For large-scale planting, semi-orchard-like furrow application can be used, and 300 500 grams of instant compound fertilizer can be applied each time. Potted plants can be sprayed with "potassium dihydrogen phosphate of fertile leaves" each time.

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Thank you for your patience: the leaves of podocarpus should be infested with mold.

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Thank you for your patience: you need to spray the whole plant with avermectin or carbendazim. Phosphate and potassium fertilizers are supplemented at the same time.

Hello, happy to answer your <>

Thank you for your patience: podocarpus likes fertilizer, should be applied diligently, fertilizer is mainly nitrogen fertilizer, you can add an appropriate amount of alum, and make alum fertilizer water. During the growing period, fertilization can be applied once every 1 or 2 months, and fertilization can be carried out at the same time in combination with watering (the ratio of water to fertilizer is 9:

1）。For large-scale planting, semi-orchard-like furrow application can be used, and 300 500 grams of instant compound fertilizer can be applied each time. Potted plants can be sprayed with "potassium dihydrogen phosphate of fertile leaves" each time.

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It's a bug, ask the flower seller, if you can buy some medicine spraying!

Pest control in podocarpus culture:

Podocarpus red blight

Symptoms: Leaf margins and tips are brown at first, gradually expanding to russet, purple-brown edges, and raised. The lesions mostly extend inward from the leaf tip.

Prevention and control methods: remove diseased and residual leaves.

Spray 50% carbendazim wettable powder 800 times or tobuzin wettable powder 800 times, spray once in 7 days, 2-3 times in a row.

Podocarpus new leaf aphid

Symptoms: Infesting the new leaf aphid of podocarpus, in which the winged viviparous female is oval, reddish-brown, and has a white powdery waxy cover. The insect mainly sucks the sap from the newly extracted leaves of podocarpus, which inhibits the growth of new shoots.

The leaves of the severely damaged plants are yellowed and their growth is weakened. The excrement of this insect is an important factor causing coal stain disease, which affects the growth and ornamentality of plants. The insect can occur for multiple generations a year, overwintering on branches with eggs.

Control method: In early spring, when the podocarpus has not yet germinated, spray Baume 1 3 degree stone sulfur mixture solution to kill the overwintering eggs.

After the overwintering eggs are completed in late April, if the aphid begins to damage the initial stage, spray 1500 2000 times of 40% dimethoate emulsifiable concentrate; 50% anti-aphid wettable powder 600 800 times liquid poisoning.

3) Ash worms.

spray 1000 1500 times of 30% dimethoate EC;

For red spiders, use worm clear or oxidized dimethoate.

There are spider mites with filaments on the leaves, and carbendazim with a little wine.

My house is wrapped in a plastic bag, and the electric mosquito coil is plugged into the electric release, and it is untied the next day. Then the bugs were gone.

Vegetable aphid 1, in early spring when the podocarpus has not yet germinated, spray Baume 1 3 degree stone sulfur mixture solution to kill the overwintering eggs.

2. After the overwintering eggs are completed in late April, if the aphid begins to damage 2, spray 1500 2000 times of 40% oxymethoate emulsifiable concentrate; 50% anti-aphid wettable powder 600 800 times liquid poisoning.

3.If there is no condition, you can use 20 drops of wind oil essence + 1 drop of white cat dish soap (poor brand is invalid) + 200 ml of water to shake and spray.

You can also use mosquito spray, and then cover the podocarpus with a large cardboard box, and the mosquito coil can be completely extinguished for 2 hours.

Liquid. Scale insects.

Scale insects are also a relatively stubborn insect pest on podocarpus, with adults and nymphs as the pest. The adult shell is millimeters long, brown, hemispherical in shape, and has a smooth surface. The nymphs are pale yellow or pale pink, and the back of the hatched nymphs is ridged and translucent.

Scale insects mainly gather in the leaves, petioles, young stems and other tender parts of podocarpus, sucking plant sap, deteriorating the host's nutritional status, turning green leaves, and making the plant grow poorly. Scale insects occur in 3 generations a year, and adults and nymphs overwinter in the host area. In Guangdong, the hatching period of scale insects was late March and late June, respectively.

Control method: Manually scrape or erase scale insects on leaves and branches. In the nymph hatching period, choose 1500 times of 40 speed culling emulsifiable concentrate, or 4000 times of enemy emulsifiable concentrate spray control, pay attention to spraying the liquid on the back of the leaves.