Learn about sweet potato cultivation and harvesting techniques in Japan, including seedling preparation, planting, watering, and harvesting methods.
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Key Takeaways
- Sweet potatoes have diverse uses in Japan, including food and alcohol production.
- Proper seedling preparation and moisture control are critical for successful cultivation.
- Mechanization can improve efficiency in planting and harvesting.
- Timing of planting is adapted to local climate conditions such as winter snow.
- Sustainable practices include leaving stalks to enrich soil for future crops.
What the video covers
- The video showcases sweet potato harvesting in Japan on a sunny day.
- Sweet potatoes in Japan are grown not only for eating but also for making liquor.
- Seedlings are prepared by planting sweet potato tubers, covering with soil, and watering for about 2 weeks.
- Seedlings are taken from root segments and planted in the field using plastic sheets to retain moisture.
- Planting can be done manually or with machines, with larger farms using specialized equipment.
- Sweet potatoes are planted around May and June due to Japan's winter snow.
- The crop requires a humidity level of 70-80% and frequent watering without flooding.
- Harvesting occurs after 3 months when leaves turn purple; stalks are removed and left to nourish the soil.
- The nylon layer covering the field is removed before harvesting by machine.
- The video briefly shows the production process of sweet potato liquor including distillation.
Full Transcript — Download SRT & Markdown
Speaker A
Ta da. Hello my friend, today is a beautiful sunny day
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We are in Japan and today we will harvest sweet potatoes.
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Sweet potatoes are popular in Japan and Asian countries.
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Here they grow sweet potatoes not just for eating
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They also planted sweet potatoes to the making liquor.
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It's hard to believe, sweet potato alcohol, I was surprised for the first time hearing about it.
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Of course, boiling sweet or baked sweet potatoes is also very delicious.
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This is the processing of sweet potato, they are preparing sweet potato seedlings.
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Let see a detailed process here soon.
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First we will prepare seedlings.
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We will plant sweet potato tubers for seedlings.
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Like this
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Then fill up the thin layer of soil and water.
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About 2 weeks will grow.
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Taking seedling step
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We need to take the segment where the roots have grown
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So it can be grown in the field already
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Planting
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Plastic sheet to keep the plant moist during the early period.
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Seedlings can be planted, or by machine.
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Farms in the province still plant manually.
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Some big farms they will use machine
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for example this type of machine. Very convenient
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You can completely consult and order one for your farm
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And save a lot of effort.
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In Japan have winter snow, so they will plant it around May and June
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Sweet potatoes need lots of water.
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The necessary humidity in the potato field is from 70 to 80%
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So you need to water a lot. But do not flood the field
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After 3 months, sweet potatoes will be harvested
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At that time, the leaves will gradually turn purple, you can see
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Preparing to harvest, they first removed the stalks
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These creepers will then be left here, to nourish the soil then for the next crop
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Of course still need fertilizer.
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Remove nylon layer
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And harvest by machine
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Let's see the production process
Speaker A
蒸溜機
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蒸溜された原酒
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原酒
Topics:sweet potato cultivationJapan farmingsweet potato harvestingseedling preparationsweet potato liquoragriculture technologyplanting machinerycrop irrigationsustainable farmingfarm machinery Japan






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