Vegetable production

Plug Transplanting Broccoli (1990)

Introduction

Broccoli is not often transplanted in the Willamette Valley, but transplanting offers advantages in multiple cropping and establishing an early stand. The cost of using plug-grown transplants can be reduced by using the smallest plug capable of producing a quality transplant, thus reducing greenhouse bench space, number of trays, and amount of rooting medium needed to produce the crop. In addition, costs might be reduced further by growing multiple seedlings per plug and reducing the number of plugs needed to transplant a given area.

Screening Lettuce and Spinach Germplasm for Resistance to Beet Western Yellows Virus (1992)

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.