Welsh onion in the growth process of new leaves have white spots, dry leaves, bending atrophy does not grow, hit some drugs have no effect, how to deal with?
The diseases and insect pests that cause yellow onions, yellow leaves, downy mildew, botrytis, diseases, virus diseases, and flies, etc. Since the drugs used to cure downy mildew, gray mold, and disease have no effect, the onion has become viral and The species fly is most likely to be harmed and can be controlled based on specific symptoms.
Symptoms of viral disease include yellow and green yellow mottled or yellow stripe on the leaves. The leaves are distorted and the leaves tip gradually yellow. When the onset is heavy, the onion growth slows down or the entire plant is killed. Weeping onset of the onion, with 1.5% of plant disease Lingshuang emulsion 1000 times 20% hydrochloric acid moroxydine, copper acetate wettable powder 500 times liquid 10% mixed fatty acid emulsion 100 times spray control, interval 7 to 10 days, even spray 2 ~ 3 times.
Seed fly damage: larvae in the underground drill scallion rhizomes, resulting in the underground part of the rot moldy, partially wilted on the ground, the tip of the yellow leaves or the whole plant leaves yellow, serious, the green onion to stop growing or even died. Can be used 75% ciprofloxacin WP 3000 times, 40% phoxim EC 3000 times, 48% chlorpyrifos EC 3000 times, 5% fluvoluene EC 3000 times, rooting, control of fly larvae damage.
Protective Suit Sealing Machine
Protective Suit Sealing Machine,New Style Protective Suit Sealing Machine,Safety Protective Suit Machine,Chemical Protective Safety Suit Machine
GULF STAR MEDICAL MANUFACTURING FZE , https://www.gulfstarmedical.com