Abstract
To study the effects of air temperature on yield and re-growth after harvest of Chinese chive (Allium tuberosum Rottler), seeds of 'Green road' were sown every two months and seedlings were grown for 40 days. Then, seedlings were transplanted to the sand-bed in a plastic house and cultivated with sufficient fertigation for 150 days untll first harvest. Leaves of Chinese chive plants were harvested every two months and yield and re-growih were measured.HomePage
Yield and re-growih were different depending on the month of harvest. In case that plant age and times of harvest were equal, re-growth of leaves after harvest was strongly affected by the air temperature and was different depending on the month of harvest. However, if the plant has the different age and different sowing time, when plants were harvested at the same time, the pattern and the speed of re-growih of leaves were almost equal. The influence of day length on re-growih of leaves after harvest seemed to be small. Re-growih of leaves had significant correlation with the cumulative air temperature and the best re-growih was obtained when the cumulative air temperature became about 470oC during 20 days after harvest (that is 23 to 25oC of average air temperature).Keywords: Chinese chive, Allium tuberosum Rottler, sand culture, cumulative temperature, re-growih, harvest, plastic house