Joseph F. Guenthner

The economic impact of potato late blight on US growers

SummaryPotato growers have been able to control the fungus,Phytophthora infestans, that causes late blight with fungicides, but at an increasingly higher cost. A Delphi survey was conducted with thirteen experts to estimate the impact of late blight on potato yields, storage losses and fungicide use. It was estimated late-blight fungicides cost

Assessment of Pesticide Use in The U.S. Potato Industry

77.1 million and lost revenue for US growers was an additional

Use and Cost of Insecticides to Control Potato Psyllids and Zebra Chip on Potatoes

210.7 million. These total costs, which average

Impacts of foreign direct investment and advertising on the export demand for US frozen potatoes

507 per hectare, do not include non-fungicide control practices.

U.S. opportunities in China’s frozen french fry market

Pesticide use in US fall crop potato production was surveyed for the years 1990 to 1994. The purpose of the study was to provide information about the relative importance of each pesticide and potential alternatives. The objectives were to: (1) inventory pesticides used on potatoes, (2) rank the target pests and (3) estimate the economic value of the major pesticides. Extension specialists working on potatoes in twelve states provided the main source of survey data. The most commonly used pesticides in four categories were: fungicide —chlorothalonil, insecticide —methamidophos, herbicide —metribuzin, and “other” -diquat. The most frequent target pests were: early blight (Alternaria solani), late blight (Phytophthora infestans), aphids (primarily Myzuspersicae), Colorado potato beetle (Leptinotarsa decemlineata), lambsquarter (Chenopodium album), and pigweed (Amaranthus spp.). The pesticides that provided the most annual value to potato growers were methamidophos (

Factors that affect the demand for potato products in the United States

281 million), diquat (

Role Playing as a Leadership Development Tool

86 million), metribuzin (

Consumer acceptance of genetically modified potaoes

81 million), CIPC (

Economics of potato storage

56 million) and esfenvalerate (

An Analysis of Organic Potato Demand in the U.S.

52 million).