The larvae of the spinach leaf miner feed on the leaves and form a wide tunnel. Harmful impact on quality, loss of commodity value, heavy damage will cause the destruction of the whole field, and the loss is great.

After reading the hazards of the leaf miner, you can imagine that pest control is a very important thing. Let's take a look at the symptoms and prevention techniques of spinach leaf miner.

Symptoms.

The larvae of the spinach leaf miner feed on the leaves and form a wide tunnel. Harmful impact on quality, loss of commodity value, heavy damage will cause the destruction of the whole field, and the loss is great.

Morphological characteristics.

The adult leaf miner is 4 to 6 mm long and is taupe. There are hairs under the leading edge of the male fly, the legs and tars are grayish yellow, the tars are black, and the hind foot is licked 3 times. The eggs are white, oval, 0.9 mm x 0.3 mm in size, mature larvae about 7.5 mm long, wrinkled, and yellowish.蛹, about 5 mm long, oval, starting with a light tan, then turning reddish brown, turning dark brown before emergence.

Living habits.

The leaf miner hatches more than in the evening, and the hatching larva looks for the leaf drill without the stalk. When the environment is suitable, the leaf flesh can be drilled in one day. However, when the suitable host is not found, it can also feed on the manure or humus to complete the development. After the larva is matured, some of it is in the mesophyll, and some of it is in the soil. The larvae of the wintering dynasty all fell into the soil, and the pupa period was 6 months.

Control method.

(1) Agricultural control. 1. Earn early harvest. The roots of wintering spinach must be harvested before the rain, to reduce the overwintering adult eggs. 2. Deeply turn over the land. Deep harvesting of the land in time after harvest will not only benefit the growth of the plant, but also destroy some of the cockroaches that have entered the soil and reduce the insect source in the field. 3. Apply enough base fertilizer. Applying the base fertilizer requires the application of fully decomposed organic fertilizer, especially manure, so as not to bring the insect source into the field.

(2) Chemical control. It is required to control the drug during the critical period of the leaf-flying period of the leaf miner to the beginning of the hatching period, otherwise the spraying effect is poor. Can spray 2.5% deltamethrin EC 2000 times solution, or 20% cyanurate EC 3000 times solution, or 40% chrysanthemum EC 3000 times solution, or 10% Bromo Horse EC 1500 ~ 2000 times solution, Or 90% of the trichlorfon crystal 1000 times liquid for control.

The above is the leaf miner prevention and control technology provided by the Huinong School for the majority of vegetable farmers. For the reference of the vegetable farmers, it is hoped that the spinach of the vegetable farmers will not only have good quality but also a large amount of harvest.

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