METHOD FOR SELECTING VEGETABLE MATERIAL AND SOIL SPECIMENS WITH THE AIM OF REVEALING A PATHOGEN OF A QUARANTINE DISEASE OF BEETS, IN PARTICULAR RHIZOMANIA, AND A VECTOR THEREOF WHILE SURVEYING BEET AGROCENOSES

摘要

A method for sampling plant material and soil specimens includes an adapted cross-diagonal scheme for selecting. Plant samples and soil samples from 26 positions on the area up to 25 ha are taken for analysis starting from the 13row with fixing a position of 22.2 m in length through each 24 rows.