Field management measures and technical key points for garland chrysanthemum
When thinning is done well, garland chrysanthemum not only yields more, but also does not bend, giving good quality. Besides selecting and keeping seedlings of uniform growth, attention should also be paid to suitable thinning timing. If thinning is done too early, it easily wastes a second round of work, because seeds sown into the ground do not all grow at the same time; some seedlings have already emerged, while others...
The optimum growth temperature for garland chrysanthemum is 17-20°C. When growing under protection and the temperature exceeds 25°C, open the ventilation openings to let air in. When the young seedlings grow to about 10 cm, thin the small-leaf type to a plant and row spacing of 3-5 cm square, and thin the large-leaf type to about 20 cm square, while also removing weeds. Begin watering after the seedlings emerge, using keeping the soil moist as the standard. Apply a quick-acting nitrogen fertilizer once 10-15 days before each harvest, applying 15 kg of potassium nitrate and about 8 kg of urea per mu. Pest and disease control for garland chrysanthemum should mainly start with agricultural control: fertilize and water reasonably, avoiding sudden large fluctuations; keep temperature management from fluctuating up and down, create a good ecological environment, and promote healthy plant growth. When the seedlings grow to 18-20 cm tall, the small-leaf type is cut once close to the ground, the soil is washed from the roots, and they are tied into small bundles for market. Harvesting large-leaf garland chrysanthemum is more flexible; it can be harvested all at once, or sown once and harvested multiple times. The method is: at harvest, leave 4-5 leaves at the base of the main stem or 1-2 side branches, pinch or cut with a small knife the upper tender main branches or side branches, tie them into bundles for market, and pinch once about every 20 days. After each harvest, water and topdress promptly to promote the sprouting of side branches.