Calcium fruit, also known as *Pittosporum* or "calcium fruit tree," is a unique and highly valuable plant that combines high productivity, nutritional benefits, and ornamental appeal. Here’s a detailed overview of its advantages and cultivation techniques:
First, the main advantages of calcium fruit:
1. **High Yield from Early Stages**: One of the most remarkable features of this fruit is its rapid yield. In the first year, it can produce over 100 kilograms per 667 square meters (1 acre). By the second year, production increases to 600 kilograms, and by the third year, it can reach more than 1,500 kilograms. This level of early productivity is rare among fruit trees.
2. **Superior Fruit Quality**: The fruit resembles cherries in shape but has the flavor of plums. It's not only delicious but also highly nutritious, containing 60 mg of calcium per 100 grams of fresh fruit. It is rich in protein, vitamins, and essential minerals, making it a premium fruit choice for both health and taste.
3. **Ornamental Value**: The calcium fruit tree is visually appealing throughout the seasons. It blooms with beautiful flowers in spring, offers lush green leaves in summer, and bears attractive fruits in autumn. It is ideal for planting along roadsides, near homes, or in public spaces, helping to prevent soil erosion while enhancing the landscape.
4. **Strong Adaptability**: This tree thrives in a wide range of environments. It can be grown in areas with temperatures between 35°C and 43°C, annual rainfall ranging from 400 mm to 2000 mm, and at elevations up to 1,600 meters. It adapts well to slopes, hills, and even desert-like conditions, making it a versatile crop for various regions.
Second, the cultivation techniques for calcium fruit:
1. **Planting and Soil Preparation**: Choose a flat area or gentle slope that receives plenty of sunlight and has deep, fertile soil. Before planting, deeply till the soil and add about 2,000 kg of composted organic manure per acre. Mix in garbage fertilizer, animal manure, and superphosphate before leveling the ground. Dig planting holes 30 cm deep and wide, spaced 1 meter apart. Place 1 kg of mixed organic fertilizer at the bottom of each hole, cover with topsoil, insert the seedling, and firm the soil around it. Plant approximately 660 seedlings per acre.
2. **Management Practices**: After planting, water daily for the first two weeks to ensure good survival rates. During the growing season, perform 2–4 rounds of weeding and soil cultivation. In October, apply 1 kg of farmyard manure around each tree, 15 cm away from the trunk. In April, apply 20 kg of urea per mu (approximately 0.067 acres) dissolved in water to promote spring shoot growth. In July, apply 20 kg of compound fertilizer per acre to support fruit development and improve quality. So far, no major diseases have been reported, though pests such as aphids, borers, and fruit flies may appear. These can be controlled using 40% dimethoate diluted at 1,200 times.
3. **Pruning and Shaping**: Prune the tree to form a bushy or natural happy shape. After planting, cut the seedling back to about 30 cm and encourage the growth of 3–4 main branches. Develop medium and small fruit-bearing branches, and manage auxiliary branches by pulling them in summer to open up the canopy and increase the number of short fruiting branches. After harvest in autumn, remove dense, weak, or pest-infested branches to maintain tree health.
4. **Harvest and Processing**: The fruit is typically ready for harvest from early August to late September. Each fruit weighs between 6–8 grams, with some reaching up to 10 grams. Fresh fruit can be sold directly, or processed into juice, wine, preserved fruit, or canned products, offering multiple income opportunities for farmers.
In summary, the calcium fruit is not only a high-yield and nutritious crop but also an attractive and adaptable plant suitable for both commercial and ornamental purposes. With proper care and management, it can thrive in diverse climates and provide long-term benefits to growers.
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