Early Spring Fruit Diseases and Pests
Spinal Needle,Pencil Point,Medical Product Respiratory Series Wound Drainage System Co., Ltd. , http://www.nsrespiratory.com
December 18 05:02:38, 2018
After the spring, as the temperature gradually rises, the winter-dormant fruit tree pests and diseases begin to multiply. At this time, strengthening the comprehensive control of pests and diseases in orchards is the key to prevention and control throughout the year. Prevention and treatment of fruit trees before flowering Prevention and treatment of fruit trees before germination in early spring: weeds, deciduous and disease-crazing fruit trees in the orchard, scrape off rough skin and rough skin, trim disease, residue, and dead branches, and then concentrate burning or deep-buried 100 times liquid, can be effective Controlling the spread of rot disease and inhibiting the wintering propagation of red spiders has a significant effect on the control of powdery mildew, leaf roller insects, and scale insects. Post-emergence control: Orchard general spray 150-200 times the 45% crystal lime sulfur or Baume 0.3 degrees lime sulfur plus 50% of 1605 EC 1000 times, can kill more than 90% of the spider mites and in the bud Overwintering powdery spores such as powdery mildew, defoliation, etc. can also control chafers and aphids. Prevention of post-emergence and pre-flowering of fruit trees: spraying 1500-fold 50% 1605 or 80% dichlorvos 1200-1500 times, enemy-killing and pyrethroid pesticides 2500-3000 times, apparently for leaf-eating pests and rot diseases The control effect. After the flowering of fruit trees, the control of fruit trees can continue to use Baume 0.3-0.5 degrees of sulfur, preventing leaf disease and spider mites. Can also spray 2500-3000 times the kung fu, extinction sweep, can not only control the red spider but also kill leaf insects, pest eggs. 10-15 days after flowering, fruit trees can be sprayed with 1:4:20 (copper sulfate: lime: water) Bordeaux mixture or sprayed with 40% carbendazim and 600-800 times of tetrazine, which can effectively control defoliation, anthrax and Brown spot. The use of isocarbohydrate and dichlorvos is strictly prohibited within one month after fruiting.