Assess the source and the impact of the potato purple top disease phytoplasma on potatoes in the Columbia Basin.
APPROACH:
<BR> Conduct a field study to assess the susceptibiilty of important potato cultivars grown in the Columbia Basin to the BLTVA phytoplasma. <BR>Conduct a field study to assess the susceptibility of different potato growth stages to BLTVA. <BR>Assess the impact of BLTVA on potato tuber processing quality and the source of BLTVA inoculum. <BR>Documents Trust with WA Potato Commission.