What is the key to successful radish cultivation

Basic knowledge of radish

Daikon is a species of plant in the Abrana family that is native to the Mediterranean coast, the Central Highlands of South China and Central Asia, and grows even on thin soils. A cool climate-loving vegetable, the optimal temperature for growth is 18 to 20 ° C. It is susceptible to heat and relatively strong to cold, but it is susceptible to frost damage if too cold. .

In addition to vitamin C and potassium, radish also contains diastase that aids in digestion and regulates gastrointestinal function. In addition, the leaves tend to be cut during cooking, but in fact they are richer in nutrients than the roots and rich in carotene, vitamin B2, vitamin C and fiber.

Time to grow radish

Daikon can be planted year round if you choose a variety that is right for the time of harvest, such as spring, early summer and autumn. Sowing times vary depending on the region and variety, but according to the instructions, sow seeds around late February for spring harvest, harvested from late April to mid May and around April for first harvest summer. Seeds are sown from late May to June, the harvest is sown in early September, harvested from November to December. Of these, the most basic crop is harvested in the fall.

Daikon can also be grown in a growing truss

Conventional radish is not suitable for potting because it has a root length of 30 cm or more. If you want to grow regular sized radishes in your home garden, we recommend using a bag of cultivated soil as a container.
You can also plant a potted plant by choosing a variety that matches the size of the pot. For cultivating, what is commonly referred to as “mini radish” and short seeds are suitable.

Korokko is a mini radish with a root length of about 20 cm. It has a crunchy texture and can be widely used for salads, pickles, grated foods, fried foods and simmered foods. In the summer-autumn season, harvest at 20 to 25 cm in length and 7 to 7.5 cm thick after sowing about 50 to 65 days.

Santaro is a short, easy-to-find turnip that grows anywhere, withstands the cold, and can be harvested for a long time. It is especially suitable for simmering dishes because it is easy to absorb. This variety is easy to grow even for beginners as it is resistant to diseases like viral illness and yellow leaf disease.

Shogoin is a round radish native to Kyoto. It has sweet and thick meat qualities, making it suitable for simmering dishes like oden and pickles. It is characterized by high disease resistance and less root cracking. After sowing about 60 to 70 days, they can harvest. Sowing times vary by location, cool areas sow from late July to mid-August, harvested from late September to early November, warm and intermediate areas sow, and harvest from late. August to mid September. Is a guide from late October to around January next year.

The fertilizer is suitable for growing radish

The key to growing radishes is securing enough arable land (50 cm or more) and planting deep, draining and water-retaining. At least 2 weeks before sowing seeds, add about 2 kg of ripe compost and 100-150 g of bitter lime per square meter and plow 30-35 cm deep. And a week before sowing, add about 150 grams of chemical fertilizer per square meter and re-cultivate to a depth of 30-35 cm. For short seeds, sprinkle 4 seeds about 20 cm apart, while for normal seeds sprinkle 5 – 6 seeds about 30 cm apart, cover about 1 cm in soil, soak them with water. In addition, the rapidly growing radish requires more fertilizer. After thinning, sprinkle 50-60 grams of chemical fertilizer per square meter and collect soil at the base of the warehouse.

When planting regular size radishes in a planting pot, prepare a large pot with a depth of about 30 cm and 25 liters or more. If you put light stone on the bottom of the pot and put commercial soil in it, you don’t need to fertilize. We will thin it three times as directed, but after the second pruning, add 1 gram of chemical fertilizer per liter of soil as additional fertilizer and gather the soil back together.

Notes when growing radishes

Radishes are easy to grow vegetables, but they are full of pests and diseases and have the weak point of being susceptible to disease. Pests and diseases to be noted in radish cultivation.

Pests easily cling to radishes

The following are typical pests and diseases that easily attach to radishes. We’ll also cover effective remedies for each.

Radish-absorbing pests include stink bugs and hakusai mites. The sting of beetles infects viruses and causes disease, so it needs to be prevented. The best protective water solvent, Dantotsu water solvent, etc. can be used to control abramushi. There are no registered insecticides for spiders, but drugs registered for spiders on vegetables including Sun Crystal Emulsion, Akari Touch Emulsion and Adhesive Kusui, can be sprayed to reduce appearance.

The leaf-eating worms included Aomushi (a larva of Monshirocho), Yotoumushi, Himadara no Meiga, Konaga and Daikonhamushi. If the leaves are gone, the roots are poorly developed, they must be controlled. To cope, the simplest method is to throw away leaves with insects when the numbers are small. However, if you have a lot of it then the spraying will be effective. Typical drugs include Prevason Flowable 5, Preo Flowable and Diana SC. When cultivating in a growing platform, using insect nets is also very effective.

Radish disease

Mosaic disease is a viral disease that is transmitted by sucking the juice from fake peaches and mushrooms. At first, the veins become transparent, then the entire leaf becomes mosaic-green to yellow, then the leaves become dust. If infected during the early stages of growth, the entire plant strain will atrophy and the roots cannot develop. As a countermeasure, insect repellent nets that suppress the appearance of abram are most effective.

Soft rot is a disease caused by a bacteria. As it develops from the seedling stage, the stalk is soft like boiling and eventually dies. If infected after the plant has grown, the leaves will turn yellow and fall, as symptoms progress, they will rot from the center of the roots and become hollow and foul-smelling. As a countermeasure avoid continuous undercut and spraying Casmin Bordeaux, Cassette wet coating powder, Kinset 80 wet coating powder, Yonepon wet coating powder, Sterna wet coating powder, etc. as a precaution. Masterpiece wetting powder can also be used as a biological insecticide.

The main points for successful turnip cultivation

When the root of a radish grows into the soil, it becomes a “root” if the tip is blocked by hard soil, rocks or compost. Occasionally, on the news, etc., it is said that radish has an interesting shape, but it is thought that such radish also has many bulbs. If you plant a pot, don’t worry about the roots anymore.

In addition, thinning is indispensable for the harvest of large radishes. After the first thinning time, after growing, we prune the trees with insects, bad-shaped trees, underdeveloped trees, leaving 3 trees in each place. When thinning, be careful not to damage the seedlings you leave behind. Next, when the number of true leaves is about 2-3, perform a second thinning. At this time, thinning leaves two well-developed seedlings. Then, when the true number of leaves is about 5 to 6 leaves, leave a seedling with the best growth and a third thinning process. This effort is the key to the success of radish cultivation.

* Information as of November 2018.