The larva of root nodule nematode will invade the root of tuberose, causing the plant to develop poorly, dwarf and turn yellow.
At the time of occurrence, the soil can be irrigated with 1500 times of 40% Omethoate emulsion, and 3% carbofuran can be buried in the basin soil for control.
More than ten generations occur in a year, and this kind of pest is relatively easy to appear in the greenhouse.
When the female lays eggs, the oviposition tube is inserted in the epidermis of petals or pistils, and the eggs are laid under or half exposed of the epidermis. The nymphs and adults conceal the damage in the flowers.
The adults of nymphs concentrated on the flowers of Tuberose sucking juice, and the flowers appeared gray spots of food marks and spawning marks after being damaged. When serious, the petals can not open smoothly.
Always clean up weeds and reduce the places where pests live and propagate.
If insect pests are found in the growth period of tuberose, spray 2.5% deltamethrin emulsion 4000 times or 50% malathion emulsion 4000 times for prevention and control. Pay attention to spray and the hidden place of thrips in flowers.
It is a kind of omnivorous pest, which mainly eats the underground part of plants.
The adults and nymphs will bite the roots and young stems of the seedlings of Tuberose. At the same time, because the adults and nymphs dig tunnels under the soil, the roots and the upper part of Tuberose are separated, which will cause the seedlings to dry up and die.
Mole crickets have a strong phototaxis. During eclosion, they can be killed by light at 7-10 o'clock in the evening.
Manure, compost and other organic fertilizers should be fully decomposed.
In addition, 45kg of 5% Terbufos granules can be used as toxic soil for spreading and watering after application, or 1000 times of 50% phoxim emulsifiable concentrate and 1000 times of 48% lesbon emulsifiable concentrate can be used for irrigation.
