Fresh Market Vegetable Production

Nitrogen Fertilizer Rates And Banded Phosphorus On Carrot Root Yield And Quality (1988)

Introduction

Higher yields and improved root quality are essential for processing carrot growers to remain competitive. Nitrogen fertilizer applications usually range from 50 to 100 pounds N/acre with most between 50 and 80 pounds. More research is needed to clarify yield response to N, especially at higher rates, and the influence of N on such root characteristics as diameter, length, splitting, and rots. Yield response to application of banded P fertilizer is also poorly understood.

The Effect of Floating Row Covers on Virus Transmission and Yield of Potato Seed Stock (1990)

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.

Muskmelon and Tomato Production on Photodegradable and Wavelength-Selective Mulches (1990)

Introduction

Tomato and muskmelon production in the Willamette Valley is limited by cool springs, a short growing season, and relatively cool nights, even during mid-summer. Cultural techniques to increase the mean air and soil temperatures around plants, such as plastic mulch and row covers, have hastened development and increased yield of both crops.

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.