MySheen

Prevention and treatment of peach ball

Published: 2024-11-05 Author: mysheen
Last Updated: 2024/11/05, In recent years, peach balls have occurred seriously in the nectarine orchard of our town, the light trees are weak, the output is declining, the heavy ones are dead, even dead trees. For this reason, we have carried out drug screening and control for 2 consecutive years, and the results are very good, which are summarized as follows: 1. Strengthen the comprehensive management measures of fertilizer and water, keep the trees strong, ventilated and transparent, and pay attention to the protection of natural enemies. two。 Before sprouting, in the first and middle of March, the wax on the body surface of overwintering nymphs is still less, so timely control can achieve better results. Choose 5 degrees of stone sulfur

In recent years, peach balls have occurred seriously in the nectarine orchard of our town, the light trees are weak, the output is declining, the heavy ones are dead, even dead trees. For this reason, we have carried out pesticide screening and control for 2 consecutive years, and the results are very good, which are summarized as follows:

1. Strengthen the comprehensive management measures of fertilizer and water, keep the trees strong, ventilated and transparent, and pay attention to the protection of natural enemies.

two。 Before sprouting, in the first and middle of March, the wax on the body surface of overwintering nymphs is still less, so timely control can achieve better results. When the 5-degree stone-sulfur mixture was selected, the mortality rate of the insect population was 98.1%. You can also use 80 times engine oil emulsion with a little washing powder, and the mortality rate of the worm is more than 90%. The above agents have no damage to natural enemies. If the number of natural enemies is small and has no protective value, 500 times omethoate can be mixed with 50 times kerosene, and the mortality rate of insect population is 95.3%. With methamidophos 500 times plus a little detergent, the mortality rate was 98%.

3. When 0.3 degree stone sulfur mixture was sprayed once during the peak incubation period of peach balls (May 18-20), the mortality rate of the insect population was 95%. Or with 1000 times of 80% dichlorvos emulsion, the mortality rate was 90.5%.

 
0