Effects of Weed-Control Treatments and Plant Density on Root Yield and Sugar Content of Sugar Beet


Sugar Tech, vol.25, no.4, pp.805-819, 2023 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 25 Issue: 4
  • Publication Date: 2023
  • Doi Number: 10.1007/s12355-023-01249-0
  • Journal Name: Sugar Tech
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Agricultural & Environmental Science Database, CAB Abstracts
  • Page Numbers: pp.805-819
  • Keywords: Beta vulgaris L, Weed control, Plant density, Yield, Quality, BROADLEAF WEEDS, INTERFERENCE, COMBINATIONS, HERBICIDES
  • Eskisehir Osmangazi University Affiliated: Yes


This study was conducted to investigate the effects of weed-control treatments and plant densities on root yield and sugar content of sugar beet in the 2015, 2016, and 2017 growing seasons in Eskişehir, Türkiye. Weed-control treatments were designed considering the applications of sugar beet farmers and non-weed management (T0), pre-emergence herbicide (T1), post-emergence herbicide (T2), T1 + T2 (T3), T1 + hand-hoeing (T4), and weed-free (T5) with continuous hand-hoeing. Five plant densities were arranged in different row spacings of 30 (D1), 35 (D2), 40 (D3), 45 (D4), and 50 (D5) cm. Root yield, sugar content, yield reduction, weed-control efficiency, weed density, weed frequency, weed fresh weight, and weed dry weight were investigated. The results showed that the highest root yield and sugar content were obtained from T5 with 117.1 ton ha−1 and 15.17%, respectively. The lowest weed density and weed fresh and dry weights were measured in T4 and T3. Depending on the year, the root yield decreased by 100% when there was no weed management. Among the plant densities, D1 gave the highest sugar content with 13.22%, while the highest root yield (63.9 ton ha−1) was observed in D3. The most common weed, Amaranthus retroflexus L., had an 85% frequency. The most intense weed was Chenopodium album L., with 38.86 plant m−2. Weed-control treatments significantly enhanced sugar beet root yield and sugar content; furthermore, T4 produced yields similar to weed-free treatment (T5). To suppress weeds in sugar beet production, higher plant densities (30, 35, and 40 cm) are suggested if mechanization facilities are available.