What is the Chinese rose leafhopper?
What is the Chinese rose leafhopper? How to prevent and cure it? Morphological features: adult 3mm, yellowish green, narrow, long, translucent forewing, slightly yellowish, a dark brown spot on the trailing edge, and colorless and transparent hind wing. Egg length 0.7mm. Long kidney shape, colorless and transparent. The nymph is 5 years old, which is similar to the adult, only the winged cicada. There are about 10 generations a year, and the generations overlap seriously, overwintering in weeds, fallen leaves or tree crevices. This pest mainly sucks leaf sap, and the damage is the most serious in August. Nymphs and adults are hidden on the back of the leaves during the day and transferred to the leaves at night. The damaged leaves first turned green to yellow, then gradually whitened, the edges curled downwards and thickened, and there were different symptoms of leaf shrinkage. Prevention and control methods: (1) trapping and killing with black light can eliminate a large number of adults. (2) remove weeds and fallen leaves. Cut off branches with scars of spawning. (3) spraying 20% cicada powder emulsion 800 times, the flying speed of this worm is faster, and the spray should be carried out in the evening. Click to get more rose planting techniques click to get more flower planting techniques
- Prev
How to fertilize and manage rose planting?
How to fertilize and manage rose planting? Please give guidance to rose fertilization varies from season to season, 25% in summer and 12.5% in winter. All kinds of chemical fertilizers of nitrate nitrogen and ammonium nitrogen can be used, but urea should not be used, especially in clay soil, because urea will increase the pH value of the soil. Fertilize the rose.
- Next
What is the root nodule disease of rose?
What is the root nodule disease of rose? How to prevent and cure? Ask for guidance rose root nodule disease: symptom: that is, the white nodule seen in the root. The young tumor is white and elastic and hardens later. The surface of the tumor is rough. Brown or dark brown, when severe nodules can grow out of the ground. The rose with long root nodules grows poorly and the leaves are yellowing.
Related
- Fuxing push coffee new agricultural production and marketing class: lack of small-scale processing plants
- Jujube rice field leisure farm deep ploughing Yilan for five years to create a space for organic food and play
- Nongyu Farm-A trial of organic papaya for brave women with advanced technology
- Four points for attention in the prevention and control of diseases and insect pests of edible fungi
- How to add nutrient solution to Edible Fungi
- Is there any good way to control edible fungus mites?
- Open Inoculation Technology of Edible Fungi
- Is there any clever way to use fertilizer for edible fungus in winter?
- What agents are used to kill the pathogens of edible fungi in the mushroom shed?
- Rapid drying of Edible Fungi