Garlic Yellow is a unique green vegetable that develops from the nutrients stored within garlic bulbs, cultivated in complete darkness. It doesn't require fertilization and is known for its rich nutritional value and health benefits. The following are detailed cultivation techniques to help you grow Garlic Yellow successfully.
First, preparing the growing bed:
1. **Indoor Cultivation Beds**: Set up framed beds with a width of 1.2–1.5 meters, length of 2.5–3 meters, and height of 1.7 meters, arranged in four layers. The bottom layer is covered with 6 cm of sand or loam, while the upper three layers are made from reeds or branches. Cover the entire structure with plastic film or waterproof felt to prevent water seepage. Surround the bed with bricks or boards and add another 6 cm of sand or loam on top for stability and drainage.
2. **Plastic Greenhouse Cultivation**: Construct a semi-underground greenhouse that is 4–6 meters wide, 1.5 meters high, and 20–30 meters long. Dig the base 30 cm deep and build mounds around it. Cover the bed with 6 cm of fine sand or loam to retain heat. Place a 20 cm layer of straw on top to block light, and cover with plastic film to protect against rain and maintain moisture levels.
Second, selecting the right garlic variety: Choose fast-growing varieties such as Purple Skin Garlic, Zigong Garlic, or Four-Clove Garlic. These varieties produce robust, uniform, and high-yield Garlic Yellow with strong disease resistance and cold tolerance.
Third, preparing the garlic seeds: Garlic bulbs have a dormancy period, so it's essential to break this before planting. Remove the outer skin, the base plate, and some of the cloves to enhance moisture absorption and gas exchange. Soak the bulbs in fresh water for 24 hours before planting to speed up germination.
Fourth, sowing the garlic: In protected environments like greenhouses or indoors, plant the garlic as densely as possible to maximize space and yield. Arrange the bulbs in rows without gaps. If the bulbs are small, split them in half and place them directly into the bed. Plant approximately 15–20 kg of garlic per square meter. Ensure the tops are even, use a wooden board to press them down, cover with 3–4 cm of fine soil, and water thoroughly. Place plastic film over the bed to increase temperature and moisture, and remove the film once the sprouts appear.
Fifth, managing temperature: In indoor setups, use a stove to maintain warmth if temperatures drop. Before planting, keep daytime temperatures at 25°C and nighttime temperatures between 18–20°C to encourage early growth. After sprouting, adjust the temperature to 18–20°C during the day and 14–18°C at night when the seedlings reach 26 cm. Four to five days before harvest, lower the temperature to around 12°C to improve quality.
Sixth, managing moisture: In indoor settings, mist the plants every 3–4 days. In greenhouses, watering is usually unnecessary unless the temperature becomes too high, in which case the bed should be dried 1–2 times. Use warm groundwater instead of cold river water. Every seven days, spray a solution of 0.1% potassium dihydrogen phosphate or 0.2–0.3% urea. Stop watering 3–4 days before harvesting.
Seventh, harvesting: Under ideal temperature and humidity conditions, Garlic Yellow can be harvested 15–20 days after planting, when the plants reach 30–40 cm in height. Each kilogram of garlic can yield 0.6–0.8 kg of Garlic Yellow. A second harvest can be done after another 15–20 days, with 2–3 total harvests possible. However, the yield decreases with each subsequent harvest, with the second harvest being 60–70% of the first, and the third being even less. On average, you can expect 1.2–1.5 kg of Garlic Yellow per kilogram of garlic planted. After two harvests, it's best to replant the remaining bulbs separately for better results.
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