When is the best time to spray the mixture of stone and sulfur when cleaning the orchard?

There are many kinds of drugs used for sterilization and garden cleaning in the market, but according to the fruit farmers, most fruit farmers will choose stone sulfur mixture to sterilize and clean their orchards. This is because the mixture of sulfur and stone is a broad-spectrum bactericidal insecticide with good effect, and it will not have toxic effect on fruit trees after reasonable spraying. The most important thing is that the economic benefit is high, it is very cheap in the market, and it is relatively simple to make it yourself, and the price of making it yourself is lower. Some big orchards can cook by themselves.

Maybe some friends can't cook a mixture of stone and sulfur. Yi Nong will tell you how to do it first, and then Baume will be discussed later.

The boiling method of lime-sulfur mixture is similar. The raw materials are quicklime, sulfur powder and water, and the ratio of these three raw materials is 1: 2: 10. For example, one kilogram of quicklime, two kilograms of sulfur powder and ten kilograms of water constitute the proportion of raw materials. Be sure to pay attention to, the pot for boiling stone sulfur mixture must use an iron pot! When boiling, first heat the water, melt the quicklime with warm water, and filter out the residue. Heat it until it boils, then add the sulfur powder paste melted by hot water into the pot and keep stirring. Pay attention to remember that this is the water level line, and it is best to pour it one by one to avoid sulfur deposition.

Stir continuously for 20 minutes, and boil for about 40 minutes, until the mixed liquid turns into red-brown clear liquid, and there will be blue-green residue at the bottom, which will not affect it. Then stop heating and cooling, and then filter out the blue residue, leaving a reddish-brown clear liquid, which is the mother liquid of the sulfur mixture. Smell will be emitted during boiling. Boilers should wear masks, and liquid may splash during boiling. Boilers should wear long rubber gloves. The Baume degree of the cooked mother liquor is uncertain, which can be measured by Baume instrument, generally between 20-26 degrees. Good raw materials can basically be above 25 degrees.

There is a mixture of powder and liquid stone sulfur on the market. For this powder, the packaging instructions will indicate which crops use how much water. The liquid type will indicate the degree of mother liquor on the package, and you have to add water to adjust it to a suitable degree before spraying it, which makes many fruit farmers have a headache. Yi Nong will introduce it to you in the simplest formula and the most straightforward way.

Formula: Blending weight of water = ((Baume of mother liquor ÷ Baume to be sprayed)-1)× Weight of mother liquor If there is mother liquor with Baume of 25 degrees per kilogram, how much water should be blended?

We can see that the Baume of mother liquor is 25, the Baume to be sprayed is 5, and the weight of mother liquor is 1 kg.

Then we substitute the formula: 5 divided by 25 equals 5. 5 minus 1 equals 4. 4 times 1 equals 4. Add 4 kg of water in this way, and you can get a mixture of stone and sulfur with Baume degree of 5.