Hey what's up everyone welcome to my YouTube channel LifeScience with KMD. Today I'm going to explain about root note disease of mulberry. Root note disease is caused by nematode and it is distributed worldwide and cause economic damage to many crops. Causative agent is melanido-guine incognita, first reported by Narae Annatal in 1966 on mulberry from India. It belongs to class nematode, ordered Thailand Kaide, family hetero-deeride, common in sandy type of soil under irrigated condition. The name melanido-guine is of Greek origin meaning apple-shaped female. All nematodes pass through an embryonic stage for jivalene stage that is from J1 to J4 and an adult stage. The first stage of juvenile that is J1 molts within the egg infected juvenile J2 is attached to growing root. J2 enter roots and migrate to this area of cell elongation. J2 initiate feeding site by infection of esophageal gland secretion into the root cells forming gene cells. Nematode develops into J3, J4 and adult stage. Galling occur as a response to nematode parasitism. Adult female produce more than 1000 eggs. Males are unnecessary in most species but are sometimes encountered. Eggs are exuded into an egg mass on the outside of the female. Many galled roots provide minimal resource for the rest of the plant. Symptoms of root-not disease of mulberry, affected plants, show stunted growth, marginal necrosis, allowing of leaves, formation of characteristic knots or gall on the root. As a result poor plant growth about 10-12% of leaf yield are lost in addition to affecting the leaf quality. Mating to control measures, deep digging or blogging, intercropping of nematocidal plants, use of organic oil cakes as soil amendments, application of nematocides, muching of leaves.