The harmful symptoms of floral leafminer, what are the larvae of leafminer?
What is the harmful habit and form of leafminer? Do you know? If you want to know, let's take a look.
For harmful habits: adults lay eggs in the mesophyll, and the larvae first feed under the smooth epidermis of the leaves, causing grayish-white food marks on the leaves. The nearly mature larvae turn to latent food on the back of the leaves, and finally pupate under the epidermis of the back of the leaves. A lifetime of food marks are concentrated on one leaflet, which can also extend from one leaflet to another. There are small gray-white spots on the leaves nearby, and there are about a dozen in one place. The epidermis is ruptured, which is the wound caused by adult absorption.
Shape:
Eggs: oval, gray slightly transparent.
Larvae: grayish white to yellowish, maggot-shaped, about 2 mm long when mature.
Pupa: oval, gray-white, about 2 mm long and 1 mm wide.
Adult: about 2 mm long, black-gray body, transparent forewings, average gray stick.
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Measures against cold and freezing of crops: what are the key points of the cold prevention plan for crops?
According to the Central Meteorological Bureau, low temperatures of about 11 degrees Celsius are more likely to occur in open areas in central China. In order to avoid severe cold damage and cause crop losses, there is a special appeal that all cultivated crops and aquaculture operators should take precautions against the attack of strong cold air masses.
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Cotton aphid characteristics of flower aphids, symptom characteristics of flower aphids and cotton aphid morphology
Among the common insect pests of flowers, the harm of cotton aphid is very great. Let's take a look at the harmful habits and forms of cotton aphid. Harmful habits: cotton aphids are common aphids in general herbaceous flowers, occurring in plant buds, young leaves, or flower buds, Corolla
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