First of all, different formulations of pesticides are different.
First, the dilution of liquid pesticides: When the amount of liquid is small, it can be directly diluted. Prepare the necessary fresh water in the ready-to-use dispensing container, then gradually pour the quantitative dose into the water, and mix it with a wooden stick to use it. When it is necessary to formulate more doses, it is better to adopt a two-step preparation method, that is, use a small amount of water to prepare the original solution of the Pesticide firstly, and then prepare the good mother liquor according to the dilution ratio and pour it into the prepared clear water, and stir well. Can use it.
Second, the wettable powder dilution: two-step preparation method should be used, that is, first with a small amount of water to prepare a relatively thick mother liquor, and then poured into the final container of water containing the final dilution. However, it should be noted that the amount of water required for the two-step preparation should be equal to the theoretical amount of water.
Third, the dilution of powder pesticides: the main use of fillers for dilution. First take the wood ash, rice bran, dried fine mud, etc., and then mix the required powder pesticides with stirring, and repeatedly add it until it reaches the required multiple.
D. Dilution of granules Pesticides: Mix them with appropriate fillers; when diluted, dry sand or neutral fertilizers can be used as filler to stir in a certain proportion.
Second, we must do "six don'ts."
First, do not use the sewage preparation: There are many impurities in the sewage. It is easy to block the nozzle with dispensing, and it also destroys the suspension of the pharmaceutical and causes precipitation.
Second, do not use wells and water: well water contains more minerals, these minerals and pesticides mix easily after chemical reactions, the formation of precipitation and reduce efficacy. It's best to use clean river water for medicine.
Third, do not spray on stormy days and hot sun: spraying phoenix will pesticide powder and liquid drift; rain spray, powder, liquid easily washed, reduce efficacy; Open stomata, prone to phytotoxicity. The best spraying time is 8-10 am and 3-6 pm.
Fourth, do not abuse drugs: According to the type of crop, the object of control and the performance of different pesticides and use the corresponding pesticides, and truly achieve the right medicine. The abuse of pesticides often causes phytotoxicity.
Fifth, do not spray during flowering: crops and fruit trees flowering and young fruit, young, weak disease resistance, prone to injury, should be sprayed after flowering and young fruit.
Six, do not use a drug: Commonly used a pesticide easy to produce pest resistance, reduce control effect, should use different pesticides.
In addition, relevant experts also reminded you that if you are not sure about some details, you can ask the local agricultural technicians and do not imagine it.
Zoysiagrasses are warm season grasses native to China, Japan and other parts of Southeast Asia. The species was named to commemorate an 18th century Austrian botanist, Karl von Zois. In 1911, Zoysia matrella was introduced into the United States from Manila by a U.S.D.A. botanist, C. V. Piper. Because of its origin the grass was commonly called Manila grass.
Piper described the grass as abundant on or near the seashore in the Philippine Islands. When closely clipped, it made a beautiful lawn according to Piper's notes. He suggested that the grass had unusual promise as a lawn grass along the Gulf Coast and Atlantic coast of Florida.
Zoysia japonica, sometimes called "Japanese lawn grass" or "Korean lawn grass", is a coarser textured, but more cold hardy species than Zoysia matrella. Zoysia japonica was introduced into the United States in 1895 from the Manchurian Province of China. In the United States, Zoysia japonica could be expected to do very well as far north as Maryland. It is a seeded variety of Zoysia.
The third species of Zoysia used for turf is called Korean velvet grass or Mascarene grass, Zoysia tenuifolia. It is a very fine textured species, but is the least cold tolerant of the three species. Zoysia tenuifolia is native to the Far East and was introduced in the U.S. from the Mascarene Islands. In the U.S. it is used in southern California as a low growing ground cover.
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