Matt, I just wanted to comment on your : > Andy the "dutch researchers" you speak of have most certainley found a > place in thier industry for CO2 supplimentation.
As far as I am dutch and work for a large dutch cooperative suppling products and services to the horticultural industry worldwide WE DIDN'T in the subject of orchids grow in Holland. 600.000 sq. ft equals 55,741.82 m2? Total amount of crops in Holland under glass with heating is 55.695.972 m2 in which we grow vegetables, potted plants, cut flowers etc. With 8 600 companies under glass of the total horticultural companies (10.239) only 233 have more than 50 hectares. As far as my knowledge goes that doesn't mean 1 greenhouse but company size. The biggest size for tomato growers is about a 5 hectare greenhouse (ONE unit)! But that is just one of the 35 countries you seem to have info on. http://www3.lei.wur.nl/ltc/Classificatie.aspx ; source: http://statline.cbs.nl/StatWeb/table.asp?STB=T&LA=nl&DM=SLNL&PA=70674ned&D1=250,257,292,299,355,376,615-616,621-622,625-666&HDR=G1 As English is not my native tongue: In Holland we normally calculate if an investment in for example CO2 is feasible, in the database I have those investments have not been made so they have been found not feasible. But I have not found any report in which is stated that suppling CO2 in orchids did or didn't had any effect positive or negative besides the point if the investment was feasible. Again their maybe some effect on keeping CO2 on a X level of ppm but in Holland company like Anthura and Floricultura and other large orchid potted plant growers have not invested in CO2 suppling equipment. With some 100 hectares (80% phalaenopsis) production and the investment in heating equipment you can bet there has been looked at additional investment in supply the CO2 waste to avoid environmental issues and getting more money in someones pocket. Regards, Martin _______________________________________________ the OrchidGuide Digest (OGD) [email protected] http://orchidguide.com/mailman/listinfo/orchids_orchidguide.com
