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1. The Pigment That Controls Growth and Flowering In Many Plants
26. Incandescent lamps are not desirable in greenhouse production because they have low efficiency and generate excess heat. In addition, their light spectrum consists of primarily red wavelengths, which causes excessive stem elongation in some plants.
Fluorescent lamps are more efficient but are needed in large numbers to make up for their low power. They have a similar problem as the incandescent lights but they emit mostly blue wavelengths. Specially designed fluorescent lamps with better balanced spectrum also are available.Incandescent lamps are not desirable in greenhouse production because they have low efficiency and generate excess heat. In addition, their light spectrum consists of primarily red wavelengths, which causes excessive stem elongation in some plants.
Fluorescent lamps are more efficient but are needed in large numbers to make up for their low power. They have a similar problem as the incandescent lights but they emit mostly blue wavelengths. Specially designed fluorescent lamps with better balanced spectrum also are available.
28. Questions?