Control techniques of wheat trematodes

A lot of insect pests will occur in the process of wheat growth, and trematodes are one of them. its larvae are harmful to wheat during the filling stage. as long as there is a trematode in the grain, the yield will be reduced by 1/4 as long as two have halved their production and four have no harvest. We can see how ferocious its destruction is, so attention must be paid to prevention and control. Let's work with the editor to understand the control techniques of wheat trematodes.

1. Difficulty of prevention and control

Half of the adults of wheat trematodes lay eggs on wheat ears from late April to early June. the egg period only takes five days to pay attention, and the hatched larvae can enter the wheat grains. Therefore, the best control is only about a week, and it is easy to miss the control opportunity. Once the larvae enter the wheat grain, it is difficult to spray, which brings great difficulties to the control.

2. prevention and control of pupa stage

Spraying poisonous soil poison to kill pupae should be carried out 3-5 days before wheat heading, preferring early rather than late, so as not to miss the opportunity. There are 40% chlorpyrifos EC and 3% methyl isosphos granules available. 500ml and 2 kg of them are mixed evenly with 20 kg of fine sand to prepare poisonous soil, which is evenly spread on the surface in the afternoon. Pay attention to do not sprinkle it on the leaves in order to avoid drug damage, spraying water after spraying can increase the efficacy.

3. Adult stage control

It should be carried out after wheat heading and before poplar blossom, and aphids should be treated at the same time. The available agents are cyhalothrin EC and imidacloprid wettable powder. After dispensing the liquid in accordance with the regulations, spray it at 7: 00 a.m. or 5: 00 p.m. On a sunny day, pay attention to the windless weather, the strong wind will affect the spray effect. Spray evenly, don't let go of wheat ears and leaves, and some control the number of adults and the number of eggs laid.

4. Points for attention

The prevention and control of trematodes must be strict, and if we miss the critical period, we will not be able to achieve the effect of prevention and control, so wheat farmers should seize the opportunity and use drugs in time to prevent and control trematodes in order to ensure high yields in the current year. Medication is to be careful, do a good job of corresponding protective measures, so as to avoid drug poisoning.

The above is the introduction of wheat trematode control technology, hope to help you, want to know more related knowledge, please follow us.