Effects of Plant Density on Growth and Yield of Sunflower

Received: 30-08-2022

Accepted: 27-01-2023

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Issue: Vol. 21 No. 1 (2023)

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NÔNG HỌC

How to Cite:

Hoang, D., Loc, N., Long, N., & Thang, V. (2024). Effects of Plant Density on Growth and Yield of Sunflower. Vietnam Journal of Agricultural Sciences, 21(1), 8–13. http://testtapchi.vnua.edu.vn/index.php/vjasvn/article/view/1098

Effects of Plant Density on Growth and Yield of Sunflower

Dinh Thai Hoang (*) 1 , Nguyen Van Loc 1 , Nguyen Viet Long 1 , Vu Ngoc Thang 1

  • 1 Khoa Nông học, Học viện Nông nghiệp Việt Nam

    • Keywords

    Sunflower, plant density, growth, grain yield

    Abstract


    The study aimed to evaluate the growth and yield of introduced sunflower varieties in the 2021 Spring cropping season at Gia Lam, Hanoi. The experiment was designed according to a randomized complete block with three replicates for each of the two sunflower varieties, Roshia and Yuyoo 3. Theexperimental plant densities included 83,333, 55,556, and 41,667 plants/ha. The results showed that increasing plant density increased plant height, leaf area index, potential and actual yields but decreased head girth, leaf area, above-ground fresh and dry matter weight, and individual yield. At 83,333 plants/ha plant density, actual yields were highest (3.94 tonnes/ha in Roshia and 3.28 tonnes/ha in Yuyoo 3).

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