In article the description of one of the most dangerous diseases – potatoes cancer is given. Signs of defeat of plants are noted. Recommended quarantine actions are given.
One of the most dangerous diseases of potatoes. Strikes tubers, stolony, the bases of stalks, leaves and even flowers. In places of infection there are in the beginning small, then outgrowths more and more increasing in the sizes which in a form remind a sponge. At the beginning outgrowths have coloring of color of an ivory, then they bureyut and at last blacken, turning in damp conditions into mucous decaying weight. The outgrowths which are forming on elevated parts of plants, have green coloring. Development of underground outgrowths doesn’t influence a tops of vegetable to find a disease it is possible, only having dug out a plant.
On tubers cancer outgrowths are formed usually on eyes, expand from hardly appreciable hillock till the size of a tuber. In Ukraine for the first time the disease was revealed in 1935 on a personal plot in Slavuta of Hmelnitsky area. The biological cycle of a cancer of potatoes begins from zoodispute. Zoodisputes colourless, yaytsevidny or pear-shaped form. They are supplied zhgutiky by means of which move in a water droplet. The illness during the summer extends zoodisputes.
The disease with potatoes tubers, with the soil on root crops and roots of a landing material, with manure extends, at a skarmlivaniye an animal of infected potatoes, and also tools of processing of the soil, a stream of thawed and rain snow. Quarantine actions: prohibition of export of potatoes from the settlements having the centers of a cancer of potatoes. Observance of crop rotations. Spatial isolation of seed crops from production not less than 1 km. In 2007 in the Razdolnensky area is planned to survey 20ga landings of potatoes to disease identification.
H. Cooper, state inspector Razdolnenskogorkp.