The farm bus || For many years, he has focused on crop cultivation and plant protection technology research. This article is original, plagiarism must be investigated!
It is not easy to plant a crop, diseases and pests are coming one after another, it is impossible to prevent it, if you encounter a quack doctor again, it is not a charcoal in the snow at all, it will only make you worse!
<h1>The misdiagnosis of agricultural retail stores</h1>
No, Lao Zhang in the Zhongmu area, planted eggplant for 3 years, this time it is almost time to sell, but the stall is on the table!
Some time ago, the temperature was high, and he went to the eggplant field to hang out, looking at the purple eggplant on the ground, and the joy of the harvest was not revealed through the corners of his eyes. However, inadvertently, I found that there were abnormal phenomena in some eggplant, and I took a closer look: the leaves of the eggplant appeared densely packed with yellow spots, and there were also gray-white patches the size of rice grains on the eggplant.
How can you watch the money that is almost in hand fly away in vain? Lao Zhang picked a few leaves and went to the agricultural supply shop in town.
The owner is also quite sharp, with big eyes at a glance: leaf blight! Quickly use triazole fungicides with foliar fertilizer, and beat twice in a row to control the development of the disease.
After Lao Zhang took back the medicine, he called it at 5:30 p.m.
The next day, the restless heart urged him to go down to the field to check, Emma! Why are there so many of these symptoms?
On the third day, more! Lao Zhang couldn't sit still and asked me what was going on!
<h1>Find out</h1>
I am not in a position to say anything about others, but after a closer look, I determined that this is not a disease, but the harm of eggplant tea yellow mites, which most people do not know too well. Because of its small size and imperceptible size, unfamiliar people usually judge it as a disease.
Tea mites belong to the arachnoid mites, not insects. Omnivorous, harmful crops are widely distributed, including melons, fruits and vegetables, solanaceous crops (peppers, tobacco, eggplants, etc.), tea leaves, etc. In particular, it is seriously harmful to tea and eggplant.
The tea mite is tiny, about 0.1 mm, and difficult to identify with the naked eye.
A tea mite can breed more than 10 generations a year.
It likes warm and wet, and has obvious tenderness. Harms young parts of crops.
<h1>Hazard characteristics of tea yellow mites</h1>
It mainly sucks up crop juice with a sucking mouthpiece, which mainly harms leaves, shoots, buds and fruits.
Eggplant leaves will become thicker, smaller and brittle after being endangered, and it is easy to crack with a hand, and the back of the leaf will appear tea-stained, and the leaf edge will curl in the direction of the back. This is also the reason why many people intuitively judge the disease.
The young shoots also take on a tanish brown color, and the tip gradually necroticizes.
The endangered buds are deformed and do not flower.
When the fruit is damaged, it becomes the same color as the leaves – tea brown with a cracked surface.
<h1>Prevention and control of eggplant tea yellow mites</h1>
Tea mites belong to the arachnid order and use the same potions as anti-red spiders.
In the resistant area, spironate, spironium ethyl ester, acetazole, biphenylhydrazine ester can be used to control tea yellow mites; and in high resistance areas, I recommend the use of compound preparations, the effect is better biphenylhydrazine ester. Tetramethazine, or acetazole + spiroxate rotation, can delay the onset of resistance.
The reason for the use of tetramethazine is that it has a good egg killing effect, and biphenylhydrazine ester can quickly suppress the insect mouth, so combined together, increase the duration of efficacy.
Tea yellow mite is often called yellow spider, it and strawberry on the two-spotted leaf mite (white spider), are more difficult to control a type of target, in the use of acaricides, must do a good job of product rotation.
Most importantly, don't treat such conditions as a disease anymore!