An example of inoculative release occurs in greenhouse production of several crops.
Rhubarb is now grown in many areas and, thanks to greenhouse production, is available throughout much of the year.
The last of the freshies from the airdrop were long gone and the greenhouse production was sporadic.
In cooler climates, greenhouses are generally used to produce transplants, and sometimes greenhouse production is extended through winter or with hydroponics.
At the moment large investments are made for greenhouse production.
In the past, greenhouse production was not economical because tomatoes could not be produced consistently.
By 1903 the company's catalog boasted that the Irvington plant was the country's largest greenhouse production facility.
All greenhouse production ended the next year and the factory was closed.
Connecticut has 20 million square feet of covered greenhouse production.
Sub-irrigation is also used in commercial greenhouse production, usually for potted plants.