Diseases and pests of red spider lily and their control methods

Diseases and pests of red spider lily and their control methods

Diseases and prevention methods of red spider lily

Bacterial soft rot

The pathogen is a weak parasite that mainly harms the tubers of the plant.

The pathogen invades through the wounds on the surface of the red spider lily, and secretes protopectinase during the expansion process. The pectin in the intercellular layer between the mealybug host cells causes the plant's cells to decompose and water to seep out. The diseased part will then appear soft and rotten, and sometimes emit a foul odor.

Prevention and treatment methods

Before planting, soak the plants in 0.3% copper sulfate solution for 30 minutes, wash with water, and plant after drying.

Spray 500 times diluted 50% carbendazim wettable powder every half a month for prevention and control.

In the early stage of the disease, spray with 2500 times diluted 50% benomyl.

Pests and control methods of red spider lily

Spodoptera litura

The disease is usually severe from late spring to November.

The larvae will harm the leaves, buds and fruits of the plant. They will eat the leaf flesh and bore into the flower stalks and seeds, causing the plant to grow weak, gradually wither and die.

Prevention and treatment methods

For prevention and control, you can use 2500 times diluted 5% Reponsil suspension or 1000 times diluted Wanling.

Lycoris radiata

The larvae will eat the inside of the bulb. When the damage is discovered, the leaves are often hollowed out, leaving a large amount of green or brown feces particles at the damaged area.

Prevention and treatment methods

Always observe the back of the leaves to see if there are neatly arranged insect eggs. Once found, remove them immediately.

You can dig out overwintering insect eggs when turning the soil in early spring to reduce the occurrence of insect pests.

When the disease occurs, spray 1500 times of the pesticide Lorsban or 800 times of chlorpyrifos emulsifiable concentrate. Choose to spray in the morning or evening when the larvae come out to move around, and the prevention and control effect will be better.

Grub

It is a general term for the larvae of the superfamily Scarabaeoidea of ​​the order Coleoptera.

The larvae live in the soil all their lives and like to bite newly sown seeds, rhizomes, seedlings, etc., causing missing seedlings and broken ridges. They are extremely widely distributed and cause serious damage.

Prevention and treatment methods

Once discovered, pesticides such as chlorpyrifos or dichlorvos should be used for spraying and prevention in a timely manner.

<<:  Common pests of white clover and their control methods

>>:  Epiphyllum diseases and pests and their control

Recommend

Can I water the bougainvillea when it is in bloom?

Bougainvillea flowering watering Bougainvillea ca...

How to fertilize bicolor jasmine

Fertilization method for bicolor jasmine accordin...

Pruning old potted jasmine

1. Pruning Before planting: prune the roots and c...

The reason why the leaves of Kalanchoe become soft and thin

1. Not adapting to the environment Reason: If the...

Growth environment conditions and characteristics of mosquito repellent grass

Environmental conditions and requirements for the...

Can Wogan seeds be planted?

Can Wogan seeds be planted? Wogan seeds can be pl...

Is the dragon blood tree poisonous? Can it be kept at home?

Is the dragon blood tree poisonous? The editor te...

The meaning of lucky bamboo

1. Meaning The meaning of lucky bamboo is self-ev...

How Clematis Spends the Summer

1. Category I One type includes the long-petaled ...

How to propagate Phalaenopsis seedlings?

Phalaenopsis is an elegant and beautiful orchid t...

How to take care of the elderly

1. Breeding environment 1. Light: When raising th...

What vegetables are suitable to grow in winter?

As winter approaches, the temperature gradually d...

How many years does a lemon tree bear fruit?

Introduction to Growing Lemon Trees Lemon trees p...

What fish can be kept with water lilies?

1. Types of fish If you raise water lilies and fi...