What effect does sulfur powder have on fruit trees?

What effect does sulfur powder have on fruit trees?

1, sulfur powder has special effect on controlling powdery mildew. Under the conditions of high temperature, high humidity and poor ventilation, flowers and trees such as rose and crape myrtle are prone to powdery mildew. Carbendazim, Tobuzin, Bacitracin, Bordeaux mixture and other fungicides have poor control effects and cannot control diseases, while sulfur powder has special effects. The method is as follows: firstly spray the diseased plants with a sprayer (to facilitate the adhesion of sulfur powder), then spray sulfur powder on the branches and leaves of the diseased plants with a duster, and spray less on the branches and leaves of the diseased plants (to play a preventive role), and the powdery mildew will disappear after a few days. For powdery mildew of potted flowers, the original small watering can of guilin watermelon frost (a medicine for treating oral ulcer) can be washed, dried and sprayed with sulfur powder. You can also roll a thick paper roll into a paper tube with big head and small head. Put a small amount of sulfur powder from the big head and aim it at the affected area. Blow from the small head and the sulfur powder will be spread evenly.

2. Sulfur powder has special effects on rotten roots. Flowers and trees are prone to root rot and plant death. Many drugs are difficult to be effective and can be treated with sulfur powder. For example, Clivia often rots its roots due to excessive watering or unclean culture soil, knock it out of the pot, remove the culture soil, cut off the rotten roots, rinse the roots with water, dry them slightly, spray sulfur powder when the roots are slightly wet, and then plant them with sterilized culture soil, and new roots can grow in about one month; If the roots are rotten, you can spray sulfur powder and plant it in plain sand, and the leaves are often sprayed with water. After the new roots grow, they can be cultured in sterilized culture soil.

3. Sulfur powder has a special effect on the treatment of wound juice decay. After the old leaves and yellow leaves of Cycas are cut off, the glue will continue to flow; Figs, banyan trees, etc. White juice will flow after pruning, which is easy to be infected; After Clivia blooms and bears seeds, cutting flowers and arrows is easy to shed juice and even cause rot. At this time, sulfur powder can be sprinkled after cutting. According to experiments, cut flowers and trees that shed juice stop bleeding when they meet sulfur powder, and can heal quickly. After cutting the roots of newly planted stumps, applying sulfur powder at the incision can also prevent infection and rot, enhance stress resistance and promote rooting.

4. Sulfur powder has special effect on cutting flowers and trees. Generally, cutting flowers and trees are first inserted into plain sand, then rooted and then moved into culture soil for culture. If it is directly inserted into the culture soil, it is easy to rot and the survival rate is low. However, if the cuttings are dipped in sulfur powder immediately after cutting and then inserted into the culture soil, rot can be effectively prevented, not only the survival rate is high, but also the seedlings grow healthily. If the cuttings of camellia and rhododendron are dipped in sulfur powder and directly inserted into pine humus disinfected with potassium permanganate, the survival rate can reach above 90%.

5. Sulfur powder has a special effect on improving the survival rate of grafting. Grafting interface is the most susceptible to infection, affecting survival, and can be disinfected with sulfur powder. For example, after fenugreek or cactus is grafted with crab claws and fairy fingers, sulfur powder is sprayed on the wedding festival immediately to shelter from the rain for 3 days. Even if plastic bags are not used in the future, they will not be infected and rotted, and the survival rate is over 95%.