Disease and related disorder management

Introduction

Research report from OSU's North Willamette Research and Extension Center

Delbert Hemphill and Gary Reed
Oregon State University

Introduction

Control of virus-vectoring aphids is essential in potato seed production to exclude viruses such as potato virus Y (PVY) and leaf roll. Floating row covers might protect plants from insect attack, reducing the need for insecticides.

Introduction

Research report from OSU's North Willamette Agricultural Research and Extension Center

Delbert Hemphill
OSU Dept of Horticulture, NWREC

Introduction

Introduction

Beet western yellows virus (BWYV), an aphid-vectored luteovirus, causes a pronounced, bright yellow color to the leaf margin of lettuce, spinach, and other leafy greens. Interveinal chlorosis may also develop. The virus does not usually stunt growth and is not considered a problem in many susceptible crops. However, where the leaves are harvested or comprise the edible portion of the crop, such as with lettuce, spinach, Chinese cabbage, and root crops sold with the shoots attached, even a slight expression of symptoms can render the crop unmarketable.

Introduction

Research report from OSU's North Willamette Research and Extension Center

Delbert Hemphill
OSU Dept of Horticulture

Mary Powelson
OSU Dept of Botany and Plant Pathology

Introduction