Lotus Field Management
Top dressing should be applied 2-3 times throughout the growing season. The first application should take place when the plant has 1-2 leaves, followed by a second application before the rhizome starts to form, and a third application when the trailing leaf appears. For every 667 square meters (about one mu), apply 2000-4000 kg of well-rotted manure or 15 kg of urea for the first round. The second round should include 20-25 kg of compound fertilizer, and the third round can use 10-15 kg of urea. Early maturing varieties may only require two top dressings.
Weed removal should be done regularly throughout the growing period. When the lotus plants have 1-2 leaves, you can manually fertilize or loosen the soil around the rhizomes to encourage healthy rhizome growth. Be careful not to damage the stems while loosening the soil.
To ensure even distribution of the rhizomes across the field and avoid them growing into the ridges, check the direction of the rhizome growth frequently. If the rhizome is leaning in an unwanted direction, gently lift it and redirect it. To do this, open the soil in the first and second sections of the rhizome, expose the bud and rhizome, then carefully lift and adjust its position before burying it back into the soil. Avoid pulling too hard, as this could break the rhizome. It’s best to perform this task on a sunny afternoon when the soil is easier to work with.
Water level management is crucial. The water depth should be kept consistent, following the principle of shallow during the early stages, deeper during the middle, and gradually reduced later. During the mid-growth phase, when temperatures are higher and the stems are taller, the water depth can be maintained at over 20 cm. After the harvest, if the rhizomes are to be left in the ground for the next year, a certain water level should be maintained to prevent the soil from drying out and cracking, which could damage the underground stems during cold winters. This also helps keep the soil from becoming too hard, making future digging easier.
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