In recent years, Japanese sweet potatoes have been chosen by many farmers to grow their main income. This potato variety brings high yield and does not take too much time and effort to take care of. Japanese sweet potato growing technique Is there anything worth noting? The content of the article below will help you get more information on this topic.
What month should you plant sweet potatoes?
The most suitable time to plant Japanese sweet potato varieties is in the winter-spring season, around mid-September.
The latest time to start planting Japanese sweet potatoes is around October 5 of the solar calendar.
Carrying out soil work
People should choose the soil for planting Japanese sweet potatoes, which is a soil with a light mechanical composition. Make sure the water source for irrigation is enough to supply the plants during the whole dry season.
People pay attention to make the soil very loose, clean of weeds and agricultural residues from the previous crop. The beds for growing sweet potatoes should be made along the slope of the field., the height of each bed is from 35-40cm.
Sweet potato cultivation technique
When people grow Japanese sweet potatoes with bulbs, they should cut the potatoes into small slices with a thickness of about 3cm.
After cutting, the potato tubers are dipped in diluted cement water and left for about 2 days for the cut to dry. Only then can the slices of sweet potatoes be planted.
When the seed potatoes have germinated, place the sprouts facing up with a planting density of 40cm x 40cm per plant, paying attention to cover a thin layer of soil on the surface.
If the ambient temperature is too dry, you need to pay attention to water enough to keep the soil moist. Immediately after planting sweet potatoes, people also need to water the plants to provide moisture to help the roots grow.
Care after planting
After about a week of planting potatoes, people need to check the garden to replant the dead trees. This is a way to help stabilize the planting density and increase yield.
After 20-25 days of planting Japanese sweet potatoes, people should conduct plowing and fertilizing for the first time.
The 45-day period after planting sweet potatoes is very suitable for farmers to rake the soil and apply a second fertilizer.
The tipping will be done when the sweet potato string is about 45cm long. Besides, in order for the tree to grow and develop strongly, people need to cultivate the beds regularly. In order for the extra roots not to grow too strongly, reducing the yield of the plant, people need to pay attention to regularly lifting the rope. Lift the rope gently and put it back down as before.
Fertilize sweet potatoes
In order for Japanese sweet potatoes to have good quality and high yield, farmers need to pay attention to the fertilization process as follows:
Each pole of sweet potatoes needs to use about 400kg of rotted manure or 50kg of microbial organic fertilizer.
Urea nitrogen fertilizer is used about 6kg, potassium fertilizer 8kg and Super phosphate fertilizer about 10kg.
When applying fertilizing for sweet potato gardens, farmers will use all the manure, phosphate and 1/3 of the prepared nitrogen and potassium fertilizers.
When performing the first phase of fertilizer application, farmers need to use the entire remaining amount of nitrogen fertilizer and 1/3 of the amount of potassium fertilizer.
In the second application, the gardener will use up the remaining fertilizer.
Pests and diseases of sweet potatoes
This type of beetle will usually attack the trunk and tubers, mainly on the tubers. The best way to prevent this type of beetle is to conduct high cultivation and cover the roots with soil so that the beetles cannot lay eggs.
The most noticeable manifestation of this disease is the appearance of gray-white spots on the stem and petioles that gradually turn light brown. Lesions may clump together.
The best way to prevent scab in sweet potato plants is to choose clean varieties, rotate crops with other crops, raise beds and remove agricultural residues after harvest.
The most noticeable symptoms of yellow wilt disease in sweet potato plants are gradually wilting and falling leaves. When the disease progresses seriously, it can cause the tree to die dry or light, which slows down the growth and reduces the yield.
The best way to prevent this is to choose healthy plant varieties that do not contain pathogens and combine crop rotation with other crops to clean up agricultural residues after harvest.
This is a disease caused by bacteria, the base of the tree appears succulent wounds that are pale yellow and gradually turn brown. Infected tubers will gradually rot or completely rot.
The best way to prevent disease is to choose healthy seedlings, carefully prepared cuttings, rotate with other crops and soak the field in water after harvest.
The young caterpillars will have a light red color that is opaque to the sweet potato stalks, and the worms attack and cause the sweet potato plants to grow and develop poorly. The tuber yield is not high, even causing the plant to die.
The best way to control stem borers is to kill the pupae and eggs before planting, rotate crops with other crops, and raise the beds.
How long does it take to plant sweet potatoes to harvest?
The most obvious sign of when sweet potatoes can be harvested is when the plants stop growing. At this time, the base of the plant will gradually turn yellow, the surface of the tuber is quite smooth and there is very little resin.
Sunny days are very suitable for harvesting sweet potatoes. People should note during the harvesting process to avoid scratching the surface of the tubers because they can shorten the storage time of the tubers.
We have just finished learning information related to Japanese sweet potato growing techniques. AgriSearch.net hopes that with the information I share. Planting and caring for sweet potato plants will no longer be as difficult for people as before. Thank you for your interest in following the article.