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Horticulture Principles and Practices

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color plate 29<br />

(a)<br />

(b)<br />

(c)<br />

(d)<br />

(e)<br />

(f)<br />

Fall leaf color changes: (a) Maple leaf color changing; (b) Color changes in a variety of leaves. (Sources: (a) Peter Chadwick © Dorling Kindersley;<br />

(b) Dave King © Dorling Kindersley.) Plasticulture: (c) Use of floating row covers placed over a potato crop to increase ambient air temperature<br />

around plant <strong>and</strong> keep Colorado potato beetles from feeding on potato foliage. (Source: Couresy of Dr. William Lamont, Pennsylvania State University.)<br />

(d) Different mulch colors are currently being used in commercial vegetable production including red, blue, white, reflective silver, <strong>and</strong> IRT<br />

green. (Source: Courtesy of Dr. Mike Orzolek, Pennsylvania State University.) (e) Low November in central Pennsylvania. (Source: Courtesy of Catie<br />

Rasmussen, Pennsylvania State Center for Pasticulture.) (f) Snapdragon production in high tunnel at Penn State High Tunnel Research <strong>and</strong> Education<br />

Facility, Rock Springs, PA. (Source: Courtesy of Dr. Mike Orzolek, Pennsylvania State University.)

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