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• Effects of Nitrogen Rate and Planting Density on Yield and Fruit Quality of Cherry Tomato VNUA38

  Vũ Thị Xuân Bình, Nguyễn Trung Đức, Phạm Quang Tuân, Thiều Thị Phong Thu, Vũ Thị Thúy Hằng, Đỗ Thị Hường, Nguyễn Hoàng Tiến, Đỗ Tuấn Long

  Date Received: 10-09-2026 / Date Accepted: 17-10-2026 / Date Published: 30-10-2026

   Abstract PDF (VIETNAMESE)

  This study aimed to determine a suitable nitrogen rate and planting density for the anthocyanin-rich cherry tomato VNUA38 in the Red River Delta. A split-plot experiment with three replications combined five nitrogen rates (80, 110, 140, 170 and 200kg N/ha) and five planting densities (70cm between rows; 40, 45, 50, 55 and 60cm between plants, i.e. 23,810-35,714 plants/ha) in the 2024 autumn-winter and 2025 spring seasons at Gia Lam, Hanoi. Planting density significantly affected harvested yield in both seasons, which was highest at 45-50cm spacing and lowest at 60cm, while 200kg N/ha reduced yield per plant in autumn-winter. Treatment P4M3 (170kg N/ha, 70 × 50cm) gave the highest harvested yield in both seasons (27.31 and 23.46 t/ha). Total anthocyanin content remained stable at 4.66-4.75 mg/100g fresh weight and was not affected by nitrogen rate or planting density. P4M3 is proposed as the basis for the cultivation protocol of VNUA38 in the Red River Delta.

  DOI: https://doi.org/10.31817/tckhnnvn.2026.24.10.04