Common Pest Control in Spring Seedlings

As the weather gets warmer, most pests end hibernation one after another to start activity hazards. In order to prevent pest damage in a timely manner, eliminate overwintering pests, and reduce the number of pests that occur throughout the year, the occurrence of spring pests in nursery stocks and their control measures are briefly described below. The vast number of farmers reference.

Aphid locusts are very common in seedlings and their hosts are mainly Euonymus japonicus, peach, rose, and oleander. Aphid damage not only often causes the seedlings to shrink leaves, making the plants grow poorly, but also easily induce seedling diseases. The main prevention and control measures: The first is to use the habit of yellow locusts to have a strong tendency toward yellow color, yellow plates are set in the field, and oil or other adhesive agent is applied to attract locusts and kill; the second is to use locusts to have negative tendencies towards silver gray. The habit of hanging silver gray film in the field to repel aphids; Third, use 10% imidacloprid or 50% anti-influx 1500 times liquid spray control.

Populus euphratica and Picea platyphylla, Cyclovirobufo gargarizols, were found to be overwintering as soon as the larvae became overwhelmed and the weather became warmer and began to jeopardize the growth of new poplar buds, even causing death. The yellow spot moth mainly harms the Euonymus japonicus, has a large food intake and is happy to be harmed by clusters. These two kinds of pests should begin to prevent and control at the first sight of the hazards, especially in the last year, heavy-duty land, can be used 40% Poison EC 800 times, or 25% cypermethrin EC 2500 times spray.

Scale insects mainly harm poplar seedlings and so on. After the seedlings were found to have been damaged, they could be sprayed with 28% of doubling emulsion oil 1200 times or 40% of roxburgh cream 800 times and 10% imidacloprid 1000 times.

Cockroaches mainly feed on seedlings and roots. They are the main underground pests in the nursery. They can be applied and controlled with 10% Yifengshou granules. The dosage is 0.5-1 kg per mu. However, seedlings should not be used for this medicine to prevent phytotoxicity. It can be sprayed with 40% acephate 1000 times spray.

Tianni Longi is a hidden pest that is not easily detected and is difficult to control. It is possible to discriminate whether or not it begins to damage by observing whether there is fresh excrement at the hole. If fresh worm excretion indicates that the overwintering larvae have started feeding, they should be promptly smashed with steel wire, or blocked with 40% of poisoned silk or 80% of dichlorvos cream 30 times injection hole.

The leafhopper and crown nettle leafhopper were sprayed with 15% of Lingling EC 2500 times spray; the crown net web could be treated with 1.8% avermectin 2500 times liquid, or 2.5% of kangfufen 3000 times liquid. Pay attention to the back of sprayer when spraying.

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A microscopic exam checks for things too small to be seen otherwise. Some of the things that shouldn`t be in your urine that a microscope can find include:Red blood cells,White blood cells,Bacteria,Crystals

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