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Agronomy and Crop Sciences

Utah State University

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Hps Vs. Mh Lamps & Phasic Photoperiod Rep 2, Derek R. Pinnock, Bruce Bugbee Jan 2001

Hps Vs. Mh Lamps & Phasic Photoperiod Rep 2, Derek R. Pinnock, Bruce Bugbee

Fact Sheets

'Super Dwarf’ rice was grown at four plant densities (50, 100, 200, and 600 plants m-2) in each of three growth chambers to replicate two previous trials involving lamp type (High Pressure Sodium; HPS and Metal Halide; MH) and photoperiod (12-h continuous and 12-h until anthesis then 24-h until harvest). Individual plots (0.2 m2) were separated by polished aluminum to minimize guard row effects.