New cultural system of Hypericum for long term production
2005
Matsuno, T.(Fukuoka-ken. Agricultural Research Center, Chikushino(Japan)) | Kunitake, T.
Using Hypericum variety 'Excellent Flair' lighting and heating method on heat forcing culture, lighting method on second harvesting culture in plastic house and its effects on cutback of new branch, and shading periods were examined. The results were as follows:Hypericum needs for 4hr (22:00-2:00) night break treatment for flowering. Minimum night temperature (7.5 deg C) with 4hr night break (22:00-2:00) was effective for heat forcing culture that lead to prolong the harvesting time and high quality of cut flower. In case of second harvesting culture in plastic house, starting of lighting at the beginning of August was effective for harvesting cut flower in late September. After first harvesting, starting of lighting at the beginning of August on cut back of new branch was effective for harvesting cut flower in mid-November. New cultural system of Hypericum for long term production, which might satisfy the consumer's demand by supplying the cut flower from March to July and September to November, was established by heat forcing culture combined with forcing culture and second harvesting culture.
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