. Agri-news. Agriculture. Ml CZ. December 24,2001 Greenhouse crops industry getting ready for next season Another successful season for greenhouse vegetable growers is coming to a close. By the end of November, greenhouses were cleared of crops like cucumbers, tomatoes and peppers and a break in production was taken so that there is a clean start for the next season. Prior to a new growing se;ison. several steps are taken by growers to ensure that the new crops have the best possible chance of success. "A break between crops is essential, so that the greenhouse can be cleaned and sanitize
. Agri-news. Agriculture. Ml CZ. December 24,2001 Greenhouse crops industry getting ready for next season Another successful season for greenhouse vegetable growers is coming to a close. By the end of November, greenhouses were cleared of crops like cucumbers, tomatoes and peppers and a break in production was taken so that there is a clean start for the next season. Prior to a new growing se;ison. several steps are taken by growers to ensure that the new crops have the best possible chance of success. "A break between crops is essential, so that the greenhouse can be cleaned and sanitized," says Dr. Mohyuddin Mir/a. greenhouse crops specialist with Alberta Agriculture. Food and Kural Development's Crop Diversification Centre North (CDCN), Edmonton. "Most of the vegetable growers remove the old plastic from the floor, remove all plant debris and spray the greenhouse with a disinfectant. The purpose for this is to give the new crop a good, clean start with minimum or no ; Dr. Nick Savidov, greenhouse crops scientist with Alberta Agriculture's Crop Diversification Centre South (CDCS) in Brooks, adds, "Growers should make sure to remove an) weeds that could be tucked into nooks and corners of the greenhouse and may escape detection. These weeds can be a potential source of insects next year There are many other aspects of greenhouse sanitation that a grower must pay attention to at this time. "After a crop has been removed, plant pathogens can survive in a greenhouse to initiate the infection in the next crop," says Dr. Piara Bains, senior plant pathologist, CDCN, Edmonton. "Many plant pathogens are known to develop special surviving structures. The pathogens may survive in dried crop residue and on greenhouse surfaces including w ires and tw ines. Spores of plant pathogens like Fuscirium s/>/> and VerticiUium spp can spread in the air and settle down later on grow blocks and initiate infection. Spray all greenhouse
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