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John LeBoeuf

103 COLLOQUIUM 3 (Abstr. 643–649) Applications of Site-specific Management for Horticultural Crop Production

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Pierre C. Robert

103 COLLOQUIUM 3 (Abstr. 643–649) Applications of Site-specific Management for Horticultural Crop Production

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Tim Righetti

103 COLLOQUIUM 3 (Abstr. 643–649) Applications of Site-specific Management for Horticultural Crop Production

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Pierre C. Robert

A better awareness of soil and crop condition variability within fields brought the notion, in the early 1980s that variable management within fields by zones rather than whole fields would increase profitability by doing the right thing at the right place in the right way. At the same time, the microcomputer became available and made possible the acquisition, processing, and use of spatial field data as well as the development of a new kind of farm machinery with computerized controllers and sensors. Precision agriculture (PA) has been considered for most common cropping systems and some specialty crops, worldwide. It is particularly well adapted to high value crops such as many horticultural crops. PA is still in infancy and its adoption varies greatly but precision agriculture is the agricultural system of the future. It offers a variety of potential benefits in profitability, productivity, sustainability, crop quality, food safety, environmental protection, on-farm quality of life, and rural economic development.

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Gary T. Roberson

Precision agriculture is a comprehensive system that relies on information, technology and management to optimize agricultural production. While used since the mid-1980s in agronomic crops, it is attracting increasing interest in horticultural crops. Relatively high per acre crop values for some horticultural crops and crop response to variability in soil and nutrients makes precision agriculture an attractive production system. Precision agriculture efforts in the Department of Biological and Agricultural Engineering at North Carolina State University are currently focused in two functional areas: site-specific management and postharvest process management. Much of the information base, technology, and management practices developed in agronomic crops have practical and potentially profitable applications in fruit and vegetable production. Mechanized soil sampling, pest scouting and variable rate control systems are readily adapted to horticultural crops. Yield monitors are under development for many crops that can be mechanically harvested. Investigations have begun to develop yield monitoring capability for hand harvested crops. Postharvest controls are widely used in horticultural crops to enhance or protect product quality.

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Douglas C. Sanders

103 COLLOQUIUM 3 (Abstr. 643–649) Applications of Site-specific Management for Horticultural Crop Production

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Joan R. Davenport

103 COLLOQUIUM 3 (Abstr. 643–649) Applications of Site-specific Management for Horticultural Crop Production

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Gary T. Roberson

103 COLLOQUIUM 3 (Abstr. 643–649) Applications of Site-specific Management for Horticultural Crop Production

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N.S. Lang, R. Smithyman, L. Mills, R.L. Wample, J. Silbernagel and E.M. Perry

103 COLLOQUIUM 3 (Abstr. 643–649) Applications of Site-specific Management for Horticultural Crop Production

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Qamar Uz Zaman, Arnold Walter Schumann and David Charles Percival

slopes (real-time) for planning site-specific management practices in commercial fields. Table 1. Summary statistics for determining the accuracy of slope angle measurements with an automated system (SS) relative to the manual reference measurements (MS