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<\/strong>Star apple, scientifically known as Chrysophyllum cainito L.<\/em>, belongs to the Sapotaceae family. The star apple trees sold by the center are grafted trees, ensuring early fruiting within two years of planting. These trees produce abundant, larger, and sweeter fruits compared to common varieties.<\/p>\n
Morphological Characteristics:<\/strong> Planting Season:<\/strong> Planting Method and Density:<\/strong><\/p>\n Spacing:<\/strong> Depending on the width of the planting bed, the number of tree rows is arranged accordingly.<\/p>\n<\/li>\n For a 7-8m wide bed: Plant one row of trees in the center, spacing them 8m apart, with a density of 12-13 trees per 1000m\u00b2.<\/p>\n<\/li>\n For a 9-10m wide bed: Plant two rows in a staggered formation.<\/p>\n<\/li>\n Short-term crops or fruit trees can be intercropped for the first 1-3 years to increase income.<\/p>\n<\/li>\n<\/ul>\n Planting Techniques:<\/strong><\/p>\n Soil Preparation:<\/strong> Before planting, create raised beds 0.5m high and 1m in diameter. Use decomposed dry soil mixed with 15kg of well-rotted manure. Dig a hole 20cm deep at the center of the mound and apply a handful of DAP fertilizer along with 300g of phosphate.<\/p>\n<\/li>\n Fertilization:<\/strong> Use topsoil, pond mud, or old garden soil to form the planting mound, with a diameter of 0.8-1m and a height of 0.4-0.7m. Apply 1-1.5kg of lime per mound 15-30 days before planting. Add 10-15kg of well-decomposed organic fertilizer and 0.5-1.5kg of trace element phosphate or 10-20g of NPK 20-20-15 + TE per hole.<\/p>\n<\/li>\n Planting Process:<\/strong> Dig a hole just large enough for the seedling bag (approximately 20-25 cm). Remove the plastic bag, place the seedling into the hole, compact the soil firmly, and use three stakes to stabilize the plant. Ensure proper shading.<\/p>\n<\/li>\n<\/ul>\n Care Techniques:<\/strong><\/p>\n Water the seedlings for the first two weeks after planting to help them establish roots.<\/p>\n<\/li>\n In the first two years, provide care 2-3 times per year. From the third year onward, care should be provided 1-2 times per year (loosening the soil around the base, weeding, and removing competing plants). Apply approximately 3kg of decomposed manure or 0.3kg of NPK per tree in the second year.<\/p>\n<\/li>\n Maintain 30-50% shade coverage.<\/p>\n<\/li>\n About a month after planting, apply DAP + urea mixed with water around the roots twice a month.<\/p>\n<\/li>\n In the first 1-3 years, loosen the soil around the base annually and apply 20kg of well-rotted manure along with three applications of chemical fertilizer. Each application should include 1-1.5kg of a mixture of DAP 18-46-0, NPK 20-20-15, and urea, applied in the lunar months of January, June, and October.<\/p>\n<\/li>\n Before fertilization, flood the bed with 0.5cm of water, drain it completely, then apply fertilizer. Water thoroughly 3-4 days later to ensure nutrient absorption.<\/p>\n<\/li>\n During the dry season, dredge ditches and apply mud to the bed surface. Allow the mud to dry and crack, raising the bed level annually.<\/p>\n<\/li>\n Once the tree begins to bear fruit, weed around the base and fertilize each tree with 2-3 baskets of decomposed manure and organic waste. Apply chemical fertilizer in four stages:<\/p>\n Flower induction:<\/strong> Apply 3kg of NPK 20-20-15 + urea + phosphate per tree.<\/p>\n<\/li>\n Fruit setting stage:<\/strong> When fruits are the size of a button, apply 2kg of urea + DAP per tree.<\/p>\n<\/li>\n Early fruit development:<\/strong> When fruits reach 2-2.5cm in diameter, apply 2kg of NPK 20-20-15 per tree.<\/p>\n<\/li>\n Final stage:<\/strong> About two months before harvest, apply 2kg of NPK 20-20-15 per tree.<\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n Fruit Borer (Alopia<\/em> sp.):<\/strong> Fruit Rot Disease:<\/strong> Prevention:<\/strong> Maintain garden hygiene to prevent disease spread, remove and destroy infected fruits.<\/p>\n<\/li>\n Treatment:<\/strong> Apply fungicides such as Carbenzim 500FL, Thio-M 500SC, Score, Antracol, Daconil, Nustar, or Benomyl 2-3 times at 10-15 day intervals.<\/p>\n<\/li>\n Post-harvest Treatment:<\/strong> Fruits can be treated with hot water at 52\u00b0C for 10 minutes to prevent rot.<\/p>\n<\/li>\n<\/ul>\n The period from fruit set to harvest ranges from 180-200 days, depending on variety and season. Harvest when fruits reach physiological maturity and exhibit their characteristic color and shape.<\/p>\n Cut fruits with 1-2 cm of stem attached.<\/p>\n<\/li>\n Discard damaged or diseased fruits.<\/p>\n<\/li>\n Use paper bags to protect fruits during transport to prevent scratches.<\/p>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":" 1. Variety Description Name: Star apple, scientifically known as Chrysophyllum cainito L., belongs to the Sapotaceae family. The star apple trees sold by the center are grafted trees, ensuring early fruiting within two years of planting. These trees produce abundant, larger, and sweeter fruits compared to common varieties. Morphological Characteristics:The star apple is a woody […]<\/p>\n","protected":false},"author":5,"featured_media":2224,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[114,132,134],"tags":[],"class_list":["post-2226","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fruit-trees","category-planting-techniques","category-techniques-for-planting-and-caring-for-fruit-trees"],"_links":{"self":[{"href":"https:\/\/ifs.edu.vn\/index.php?rest_route=\/wp\/v2\/posts\/2226","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ifs.edu.vn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ifs.edu.vn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ifs.edu.vn\/index.php?rest_route=\/wp\/v2\/users\/5"}],"replies":[{"embeddable":true,"href":"https:\/\/ifs.edu.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2226"}],"version-history":[{"count":1,"href":"https:\/\/ifs.edu.vn\/index.php?rest_route=\/wp\/v2\/posts\/2226\/revisions"}],"predecessor-version":[{"id":2227,"href":"https:\/\/ifs.edu.vn\/index.php?rest_route=\/wp\/v2\/posts\/2226\/revisions\/2227"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/ifs.edu.vn\/index.php?rest_route=\/wp\/v2\/media\/2224"}],"wp:attachment":[{"href":"https:\/\/ifs.edu.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2226"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ifs.edu.vn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2226"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ifs.edu.vn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2226"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
The star apple is a woody tree that can grow up to 15-20m tall. Its leaves are evergreen, alternately arranged, oval-shaped, with smooth edges, and measure 5-15 cm in length. The underside of the leaves has a glossy, golden appearance when viewed from a distance. The small flowers are white with a purplish tint and have a pleasant fragrance. This is a hermaphroditic species (self-pollinating). The round fruits have a purple or greenish-brown rind when ripe, with a characteristic star-shaped pattern in the pulp. The seeds are flat, light brown, and hard. The tree bears fruit year-round after reaching at least seven years of age.<\/p>\n2. Planting and Care Techniques<\/h4>\n
Star apples can be planted year-round but are best planted at the beginning of the rainy season.<\/p>\n\n
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3. Pest and Disease Control<\/h4>\n
These pests attack the fruit from an early stage until maturity, causing premature fruit drop or damage that lowers fruit quality. If signs of infestation appear, spray insecticides such as Vibasu, Sagolex, Oncol, Netoxin, or Lorsban 2-3 times at 7-10 day intervals.<\/p>\n
Caused by fungi Lasiodiplodia theobromae<\/em> and Colletotrichum<\/em> sp., this disease infects fruits from an early stage. Initial symptoms appear as small black spots that spread rapidly in humid conditions, causing fruit to dry out and drop, with damage rates reaching 20-25%.<\/p>\n\n
4. Harvesting<\/h4>\n
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