| abstract |
(57) Abstract: A phthalocyanine compound produced from a polyhalogenated phthalocyanine compound or a mixture thereof is contained, and the photosynthetic effective photon flux (PPF) transmittance when light is transmitted is 50% or more. And a coating material for suppressing plant growth, which has an A value represented by the following formula of 1.3 or more. A=R/Fr [In the formula, R is 600 to 70 based on the standard light source D65. Represents the light quantum flux transmission amount of 0 nm red light, and Fr represents the light quantum flux transmission amount of far red light of 700 to 800 nm based on the standard light source D65] [Effect] Healthyly suppresses plant growth (dwarfing) The present invention provides a coating material for plant growth inhibition, which is practical, highly weather resistant, inexpensive, easy to handle, and practical. |