Tomatoes are widely loved for their rich nutritional value and diverse ways of consumption. Cultivated tomatoes have high yields and offer excellent economic returns, especially in off-season greenhouse farming, where profits can be significant. There are many tomato varieties, but they are mainly categorized into large red and pink types. Imported red tomatoes from Europe and the U.S. are known for their firm texture and attractive fruit shape, making them ideal for long-distance transportation and meeting export standards. However, they often suffer from small size and less flavorful taste. On the other hand, locally grown powdered tomatoes are larger and more flavorful, but they tend to lack firmness, resilience, and disease resistance.
In recent years, a new variety called "Longdo," introduced from the U.S., has gained attention. It combines the best traits of both types—offering good hardness, appealing fruit shape, strong growth, and a pink color with a pleasant texture. This variety is rare and highly promising, making it an excellent choice for farmers looking to try something new. Small-scale planting is recommended first, with potential for wider adoption in the future.
**First, Key Characteristics**
Longdo is an early-maturing, indeterminate type tomato with thick leaves and strong plant growth. The fruit is hard, with a shape and quality comparable to imported red tomatoes, ensuring a long shelf life. The fruits are uniform in size, beautifully shaped, and of high quality, meeting export standards as well as supermarket requirements. Each fruit weighs approximately 320-350 grams on average. It shows strong resistance to diseases such as leaf mold, viral infections, and root-knot nematodes. Additionally, it is cold and heat tolerant, preventing issues like green shoulders under low temperatures or leaf curling in high temperatures. It maintains continuous fruit setting without empty clusters or early aging, outperforming traditional varieties in overall performance. Its adaptability allows it to be planted throughout the year in different regions, including overwintering, late autumn, summer, and early spring.
**Second, Cultivation Tips**
Given its vigorous growth, the planting density for overwintering should not be too high. It is recommended to plant around 2,200 plants per acre. For field cultivation, with 4-6 fruit sets, the planting density can reach about 3,200 plants per mu. Flowering should be managed carefully, keeping the concentration moderate to ensure proper fruit development. During the flower bud differentiation stage (when seedlings have 3-8 leaves), nighttime temperatures should be maintained at 10°C or above. Base fertilizer should include organic matter, along with proper amounts of potassium and calcium. After planting, the first fertilization should occur when the first cluster of fruit reaches walnut size, followed by additional top-dressing with increased application.
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