For oranges from fruit set to harvest: supplement calcium and boron monthly with 50 g YaraLiva Nitrabor per tree.
Published · Út Nữ Co., Ltd
> Warning: The content of this article was generated / supported by AI based on publicly available documents. Út Nữ Co., Ltd disclaims responsibility for damages arising from the use of information in this article. Farmers and dealers should cross-reference packaging, manufacturer's instructions, local seasonal calendars, and contact the hotline for advice suitable for actual conditions. Orange groves in the Mekong Delta are currently in the fruit setting and fruit development stages. Besides nitrogen, phosphorus, and potassium, trees also need calcium and boron. The required amount is not large, but it should be applied evenly. This article follows the principle of right type – right time – right amount, using YaraLiva Nitrabor as an example, according to Yara's citrus nutrition program. This article is for orange trees; the dosage differs from the previous article on pomelo. YaraLiva Nitrabor Composition (according to Yara) According to Yara Vietnam's product page (Yara Việt Nam, n.d.b):
- N 15.4%; CaO 26%; B 0.3%.
- Granular form.
According to Yara's description, the nitrogen in the product is mainly in nitrate form. The product supplements calcium and boron, contributing to better plant resilience (Yara Việt Nam, n.d.b). Fertilization Schedule for Oranges from Fruit Set to Harvest (Yara) According to Yara's citrus nutrition program, the page for oranges, apply once a month, per tree (Yara Việt Nam, 2025):
- YaraLiva Nitrabor: 0.05 kg/tree (50 g/tree).
- YaraMila Complex: 0.2 kg/tree.
- YaraSuna Organic Advance: 0.5–0.6 kg/tree (if used in the orchard).
Total annual application per tree according to the program: 0.2 kg YaraMila Racer + 2 kg Complex + 0.55 kg Nitrabor + 1–1.2 kg YaraSuna. Yara notes that this is a general recommendation and needs to be adjusted according to cultivation conditions (Yara Việt Nam, 2025). The Nitrabor product page on yara.vn does not have a dosage table; the dosage in this article is taken from Yara's program file. Illustrative example: for an orchard of 200 orange trees, 10 kg of Nitrabor and 40 kg of Complex are needed each month. The Nitrabor dosage is very small, so it should be pre-divided for each row of trees to ensure even spreading. Notes on Application 1. Spread evenly around the canopy, then water thoroughly after application. 2. Do not arbitrarily increase the Nitrabor dosage; maintain the exact amount specified in the program. 3. The rainy season may end early (Thúy Lam, 2026): mulch the base, manage water proactively. 4. For coastal orchards, measure salinity before irrigation (Dân Việt, 2026). Conclusion For oranges from fruit set to harvest, Yara's program recommends applying 50 g of YaraLiva Nitrabor and 0.2 kg of YaraMila Complex per tree each month. Small, even applications spread around the canopy are the correct way to supplement calcium and boron with the right type, at the right time, and in the right amount. Product reference pages: YaraLiva Nitrabor, YaraMila Complex 12-11-18. Dosage varies depending on soil, variety, and tree condition. For further consultation, please call Út Nữ: 02943 882069. References Dân Việt (2026) 'Khung thời vụ mới nhất “né” hạn mặn do El Nino cho vụ đông xuân 2026-2027, Cục Trồng trọt và BVTV khuyến cáo gì?', *Báo Dân Việt*, 19 tháng 6. Available at: https://danviet.vn/khung-thoi-vu-moi-nhat-ne-han-man-do-el-nio-cho-vu-dong-xuan-2026-2027-cuc-trong-trot-va-bvtv-khuyen-cao-gi-d1436554.html (Accessed: 8 October 2026). Thúy Lam (2026) 'Hướng dẫn lịch thời vụ và cơ cấu giống lúa vụ Đông Xuân 2026–2027', *Trung tâm Khuyến nông tỉnh Cà Mau*, 6 tháng 10. Available at: http://khuyennongcamau.vn/thong-tin-va-truyen-thong/huong-dan-lich-thoi-vu-va-co-cau-giong-lua-vu-dong-xuan-2026-2027-85460 (Accessed: 8 October 2026). Yara Việt Nam (2025) *Quy trình dinh dưỡng cây có múi* (trang Bưởi, trang Cam). Available at: https://www.yara.vn/siteassets/vietnam/cay-trong/2025_qui-trinh-dinh-dng/2025_yara-quy-trinh-dinh-duong-cay-co-mui.pdf (Accessed: 12 October 2026). Yara Việt Nam (n.d.b) *YaraLiva NITRABOR*. Available at: https://www.yara.vn/crop-nutrition-master/phan-bon/yaraliva/yaraliva-nitrabor/ (Accessed: 12 October 2026). About Content and Responsibility Content developed by Grokbot AI. Út Nữ Co., Ltd and Grokbot AI disclaim responsibility for any damages arising from the use of information in this article. All content is for exploratory and academic purposes only, does not replace professional technical advice, official manufacturer recommendations or state agency guidelines, and does not constitute a commercial promise of yield or economic efficiency.