What should be paid attention to when growing garland chrysanthemum over summer? Master these management points
What should be paid attention to when growing garland chrysanthemum over summer? Please give guidance. Over-summer garland chrysanthemum has a short growth period, requiring only just over 20 days from sowing to harvest. But the growing period falls in a high-temperature season, and a little carelessness in management can easily cause disease. The following introduces the management of over-summer garland chrysanthemum for reference: First is sowing. Sowing can be done by machine, ...
What should be paid attention to when growing garland chrysanthemum over summer? Please give guidanceOver-summer garland chrysanthemum has a short growth period, requiring only just over 20 days from sowing to harvest. But the growing period falls in a high-temperature season, and a little carelessness in management can easily cause disease. The following introduces the management of over-summer garland chrysanthemum for reference:
First is sowing. Sowing can be done by machine or by hand broadcasting. Generally, seedlings emerge 3 days after sowing, but if the 3 days after sowing are all fine weather with temperatures above 35°C, it will make sprouting of garland chrysanthemum difficult. Therefore, it is best to sow on a cloudy day, or to check the weather forecast and choose the sowing time, preferably choosing a sowing date with a cloudy day the day after sowing. In addition, note that the sowing rate should also be increased; generally, sowing only 7 jin of seed per mu in winter gives a very suitable density after emergence.
Second is timely watering. Water the first time after sowing; water the second time about 10 days after emergence. If the market price is good, the second watering can be done a few days earlier; if the market is poor, it can be delayed a few days. Water the third time one day before harvesting garland chrysanthemum to help improve quality.
Third is pest and disease control. Immediately after emergence, spray 15% hymexazol (hymexazol) aqueous solution at 450 times dilution to control garland chrysanthemum damping-off and seedling blight.
In addition, the growing period of over-summer garland chrysanthemum coincides with high-temperature and rainy weather, so leaf yellowing and rotting easily occur. The diseases causing these phenomena are mainly Phytophthora blight and downy mildew, which should be prevented in advance in production. From the seedling stage, spraying propamocarb or metalaxyl-mancozeb at 600 times dilution can be used for control. At the same time, also pay attention to controlling leafminer; spraying 40% cyromazine wettable powder at 4000 times dilution can be used for control.
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