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 grew poorly, the leaves turned yellow, the number of roots decreased and the root nodules increased exponentially. Incidence regularity: the L nematode had two infection periods in spring and autumn in a year, and the male, egg or second instar larvae overwintered in the diseased tumor in order to survive in the soil for more than a year. After the nematode invades the root of rose, it can stimulate the proliferation of root bark cells of rose, resulting in cancer lesions. Control methods: (1) soak the roots of plants with 500-1000 times of concentrated streptomycin for 10 minutes before planting. (2) when grafting, disinfect the knife with high temperature or clear the poison with wine to prevent nematodes from soaking into the wound. (3) smear the affected area with the mixture of methanol (2858,-12.00,-0.42%), glacial acetic acid and iodine tablets (50:25:10), or with the mixture of dinitropotassium powder sodium and wood alcohol (20:80), the tumor can disappear. Click to get more rose planting techniques click to get more flower planting techniques