The following points should be noted in the application of rooting agents: 1. Please pay attention to the preparation method and concentration of the drug, the number of administrations, and the application site when administering the drug concentration and the application site. If 2.4-DD is used to prevent tomatoes from falling, they can only be treated with flowers. Do not apply the whole plant or apply to young shoots or young leaves. Otherwise, it will produce phytotoxicity. 2. Grasp the application period The application period mainly depends on the developmental stage and the application purpose of the plant. If ethephon is used to induce the formation of female squash flowers, it must be sprayed at the seedling stage with 4 to 6 leaves. If the application is too late, the sex of the early flowers is already set, which does not achieve the purpose of inducing female flowers. Application of plant growth regulators should take place on cloudy days or sooner or later. 3. Must be combined with cultivation measures Plant growth regulators cannot replace fertilization and must be combined with reasonable cultivation measures. If ethephon is used to treat cucumbers, cucumbers can produce more female flowers and more melons. However, when the conditions such as fertilizers and water are insufficient, it will lead to small melons and low fruit setting rate, and can not obtain high yields. 4. The method of applying fertilizer in the planting hole is commonly known as “living in the nestâ€. This method has more concentrated fertilization and high fertilizer utilization. Especially in the greenhouses where the soil is deteriorating and the soil-borne diseases are serious, the “fire in the nest†is an effective fertilization method. However, when interviewed in rural areas, the author learned that many greenhouse vegetables had burned their roots and died of seedlings. why? The reason is very simple, that is, the concentration of fertilizer in the planting hole is too large, the root system can not be uniformly absorbed, resulting in poisoning, burning root. If further investigation, it should be caused by improper fertilization method. Therefore, the author reminded the vegetable farmers that the point fertilizer should be careful. Under normal circumstances, the depth of the hole is about 5-10 cm. After fertilizing the soil, in order to avoid the higher concentration of fertilizer in the hole damage the root system of the crop, the organic fertilizer applied in the hole must be fully decomposed beforehand. The amount of chemical fertilizer and biological bacteria must be properly controlled. In addition, fertilizers with high nitrogen content such as urea and ammonium bicarbonate should not be used. This type of fertilizer has a large irritative effect on vegetable roots and requires less. Therefore, it is best to use organic manure, biofertilizer, humic acid and amino acid fertilizers as the nut fertilizing materials. These fertilizers not only contain nutrients but also are not easy to burn. It is generally better to apply about 30 grams into the planting hole. Pharmaceutical Glass Vial, Pharmaceutical Vial, Pharma Glass Vial, Pharma Vial Pharmaceutical Glass Vial Pharmaceutical Glass Vial,Pharmaceutical Vial,Pharma Glass Vial,Pharma Vial China Lemon Trading Co.,Ltd , https://www.sterilevial.nl