GROWN TO ORDER

摘要

The principle of using cultural methods before considering a chemical treatment applies to plant growth control as much as to defending crops from pest and disease - but for most protected ornamentals growth regulators remain an essential tool.In most seasons cultural growth control methods based on manipulating irrigation, nutrition, temperature, and light levels and wavelengths are, on their own, rarely responsive or controllable enough to enable growers of protected pot and bedding plants to meet the specifications and schedules their customers demand."Despite all the recent advances in crop nutrition and environmental control, crop growth and development are still largely influenced by the weather," says Ant Surrage of Fargro. "Everyone is looking to reduce the use of chemicals in ornamental crop production but at the same time, growers are having to meet ever tighter plant specifications and marketing schedules.