How to Grow High-Quality White Radish? A Detailed Guide to Cultivation Methods
How do you grow high-quality white radish? Here is some guidance: high-quality white radish can be grown this way: choose suitable soil. For planting radish, choose a previous crop that consumes little fertilizer, leaves behind plenty of organic matter, and is not affected by the same diseases and pests. Avoid cruciferous vegetables as the previous crop, otherwise diseases are likely to occur. Radish has wide adaptability to sandy loam...
How do you grow high-quality white radish? Here is some guidance.
High-quality white radish can be grown this way:
Choose suitable soil
For planting radish, choose a previous crop that consumes little fertilizer, leaves behind plenty of organic matter, and is not affected by the same diseases and pests. Avoid cruciferous vegetables as the previous crop, otherwise diseases are likely to occur. Radish has wide adaptability to sandy loam, but to obtain high-yield, high-quality produce, deep, loose, well-drained, and relatively fertile sandy loam is still best. When grown in suitable soil, the fleshy root can fully expand, with a regular shape, smooth skin, and attractive color, giving it market appeal.
The plot requires deep plowing
Level it and apply fertilizer evenly; this promotes an increase in available nutrients and beneficial microorganisms in the soil and makes it loose and breathable, which helps the absorbing roots take up nutrients and water, thereby allowing the leaf area to expand rapidly and the fleshy root to expand faster. Apply 75 kg of NPK compound fertilizer per mu as a base fertilizer. Then carry out soil disinfection and sterilization and control of underground pests. For the fungicide, choose 50% carbendazim 600 times solution or 70% thiophanate-methyl 800-1000 times solution for spraying; for the insecticide, choose 48% chlorpyrifos emulsifiable concentrate 800-1000 times solution for spraying.
Sowing
The quality of radish seeds has a great impact on the growth and yield of radish plants. To achieve uniform emergence, a full stand, and strong seedlings, select seeds carefully, using only plump, sound seeds and discarding shriveled, broken, and moldy seeds. The sowing rate depends on seed quality, soil texture, climate, and sowing method. Autumn-winter radish is mostly sown by dibbling or drilling. The seeding rate is determined by the desired thinning density; for dibbling, the hole spacing is 25-30 cm, with 4-5 seeds per hole, and the seeds should be scattered within the hole to avoid crowding after emergence, which would affect seedling quality.
Field management must keep up in time
After the seedlings emerge, they grow rapidly, so thin them in time to prevent crowding, shading, and spindly growth. Establish the final stand early, thin in stages, and set the plants at the right time to ensure a uniform and strong stand. Generally, thin 2-3 times, removing weak, deformed, and pest- or disease-damaged seedlings.
Water rationally
Watering is mainly determined by the growth characteristics of radish, the water requirements at each growth stage, climatic conditions, and soil conditions. After sowing, if the weather is dry, water immediately once, and water again when emergence begins, keeping the soil surface moist to ensure uniform emergence and reduce the occurrence of viral disease. If there is a lot of rain, drain promptly to prevent seedling death.
Apply topdressing scientifically
Winter radish is a medium-to-large radish variety with a relatively long growth period. On the basis of applying sufficient base fertilizer before sowing, topdressing should be applied appropriately; especially on plots with low soil fertility and insufficient base fertilizer, topdressing can significantly increase yield. Fertilization should use nitrogen fertilizer mixed with water or diluted manure water. After the radish "breaks belly," it enters the peak leaf growth stage, that is, the rosette stage; to promote leaf area expansion, apply a quick-acting nitrogen fertilizer once; when it enters the peak fleshy root expansion stage, apply a compound fertilizer once to help the fleshy root expand. Then 20 days before harvest, spray 0.2% monopotassium phosphate once a week for 2 consecutive sprays as foliar topdressing, which has a good effect on increasing yield and improving fleshy root quality.
Scientific intertillage, weeding, and pest control
During the radish growth period, intertillage and loosening of the soil are needed multiple times, especially at the seedling stage, when the temperature is relatively higher, there is more rain, and weeds grow rapidly, so frequent intertillage and weeding are needed. For high-ridge cultivation, the soil on the ridge is easily washed away by rain, so hilling should be combined with intertillage. For long, exposed-shoulder radish varieties, because the root neck is slender and weak, it often bends and lodges, so in the early growth stage soil should be hilled up around the roots to prevent lodging that would later form curved radishes. By the late rosette stage, the leaves have closed over the rows, so stop intertillage; weeding can then only be done by hand pulling.
Radish pests are mainly aphids and soft rot. Per mu, use 12% agricultural streptomycin sulfate wettable powder 10 million units plus 50-75 kg water, or 57.6% chlorothalonil dry granules 1000-1200 times solution for spraying, while also combining with root drenching. To control aphids, use imidacloprid-type products diluted with water for spraying.
Harvest in time
The harvest of winter radish depends on the variety and the marketing period. Harvesting too early gives low yield and a compact texture with poor taste; harvesting too late exposes the fleshy root to freezing or hollowing, worsening quality and causing hollowing. When the root diameter expands to 8-10 cm and the length is 25-30 cm, harvesting is more appropriate.
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