How to do drug damage when planting potatoes?

The planting area of potatoes is increasing year by year. If the selection of rotation plots is unreasonable, the drug residues of previous crops will cause drug damage to potatoes. So, what about the drug damage to potatoes?

First, how to do the drug damage to potatoes

1. Rinse with clean or weakly alkaline water

If the drug damage is found earlier, you should immediately spray a large amount of water to wash the crops and wash off the drugs on the surface of the plants as far as possible. Or add an appropriate amount of 0.2% baking soda solution or 0.5%-1% lime water to the water to make it weakly alkaline to speed up the decomposition of the agent. If the wrong soil treatment agent is used, it is necessary to wash the medicine with field discharge.

2. Apply available fertilizer quickly.

In the land where drug damage occurs, urea and other available fertilizers must be applied immediately to increase nutrients, strengthen the growth vitality of crops, ensure early occurrence and ensure crop recovery.

3. Spraying functional foliar fertilizer on leaves.

Spraying Arcadian (natural seaweed essence) or Tianda 2116 on leaves promotes the rapid recovery of crop growth.

4. Make use of the opposite characteristics of some pesticides to save.

For example, gibberellin can be used to alleviate the drug damage caused by paclobutrazol. The former is a plant growth retarder and the latter is a plant growth promoter.

Second, the main causes of drug damage to potatoes.

The occurrence of drug damage is mainly related to the quality of pesticides, application technology, crops and environmental conditions and other factors.

1. Pharmaceutical causes

The reasons for pesticides are: excessive application, or uneven application, repeated application; improper mixed use of pesticides and simultaneous use of two or more pesticides, resulting in physical or chemical changes between pesticides, resulting in increased toxicity; improper application methods, some pesticides are safe by soil method, but the spray method is easy to cause contact damage, and some herbicides use ultra-low volume spray as stem and leaf treatment. Pesticide drift, such as wheat field and corn field spray 2j4murD, will cause drug damage to neighboring potatoes; soil residues, such as the use of paclobutrazol, atrazine and sulfuron herbicides in previous crops; some pesticides cause drug damage due to the increased toxicity of surfactants.

Some microbial degradation products of pesticides will cause crop drug damage; similar trade names, containers, dosage forms and colors will cause drug damage due to the misuse of chemicals.

2. Crop and environmental factors

The causes of drug damage caused by crop and environmental factors are as follows: drug damage is caused by arbitrarily expanding the scope of pesticide use, difference in sensitivity to pesticides in different leaf ages and growth stages, improper application time, early or too late application, and weak application of seedlings, drug damage will occur. Different environmental conditions will change the sensitivity of potato to pesticides, such as applying pesticide on sandy soil, spraying it directly on seed potato, extreme high temperature or low temperature and other adverse climatic conditions may cause drug damage.