Tuberose Pests and Control Methods

Pests of tuberose: root-knot nematodes

symptom

The larvae of root-knot nematodes will attack the roots of tuberose, causing the plants to become stunted, short, and yellow.

Prevention and treatment methods

When it occurs, you can irrigate the soil with 1500 times diluted 40% oxydemeton-methyl emulsion, and bury 3% furadan in the potting soil for prevention and control.

Pests of tuberose: Yellow-breasted flower thrips

symptom

This pest is more likely to occur in greenhouses, with more than ten generations occurring each year.

When laying eggs, the female insect inserts the ovipositor into the epidermis of the petals or stamens and lays the eggs under the epidermis or half-exposed. The nymphs and adults hide in the flowers and cause damage.

The adult nymphs gather on the flowers of tuberose to suck the sap, and the flowers will have grayish-white feeding marks and egg-laying marks after being damaged. When the disease is severe, the petals may curl up and not open smoothly.

Prevention and treatment methods

Clear weeds regularly to reduce the places where pests can live and reproduce.

If pests are found during the growth period of tuberose, spray 4000 times diluted 2.5% cypermethrin emulsifiable concentrate or 4000 times diluted 50% malathion emulsifiable concentrate for prevention and control. Pay attention to spray the hiding places of thrips in the flowers.

Pests of tuberose: Mole cricket

symptom

It is widely distributed in the northern region. It is an omnivorous pest that mainly feeds on the underground parts of plants.

The adults and nymphs will bite the roots and tender stems of tuberose seedlings. At the same time, because the adults and nymphs move underground and dig tunnels, the roots of the tuberose are separated from the upper part, causing the seedlings to dry up and die.

Prevention and treatment methods

Mole crickets are highly phototactic and can be killed using light between 7 and 10 p.m. during their emergence period.

Organic fertilizers such as manure and compost must be fully decomposed.

You can also use 45 kg of 5% terbufos granules per hectare for soil poisoning, cover the soil and water it after application, or use 1000 times of 50% phoxim emulsifiable concentrate or 1000 times of 48% chlorpyrifos emulsifiable concentrate for irrigation.