Effect of sowing date and plant density on bolting of four sugar beet (Beta vulgaris L.) varieties

Authors

  • Entessar Al-Jbawi General Commission for Scientific Agricultural Research, Crops Research Administration. Douma, Damascus
  • Waeel Sabsabi General Commission for Scientific Agricultural Research, Crops Research Administration. Douma, Damascus
  • Gharibo Gharibo Crops Department, Faculty of Agriculture, Aleppo University, Aleppo
  • Abd El-Muhsien Al-Sayed Omar Crops Department, Faculty of Agriculture, Aleppo University, Aleppo

DOI:

https://doi.org/10.3126/ije.v4i2.12647

Keywords:

Sugar beet, bolting, plant density, sowing date

Abstract

This experiment was conducted in Homs Agricultural Research Station, Homs, Syria during 2007/2008 and 2008/2009 seasons to study the effect of sowing date and plant density on bolting for four sugar beet varieties, tow are monogerm varieties i.e. Parade and Etna, while the other are multigerm varieties i.e. Nadir and Mammoth. Three sowing dates were applied, began from 15/9 to 15/10, the interval between the sowing dates was 15 days. Three plant densities were executed (133 000, 100 000 and 80 000 plantha-1). Split plot design was used with three replicates. The combined analysis exhibited the significant effect of varieties (V), sowing dates (S), and plant densities (D) on all types of bolting (Early, medium, late and total). Least significant test (L.S.D 0.05) clarified that early autumn sowing (15/9 and 1/10) increased total bolting percent 74.86 and 44.88 % respectively, as compared with date (15/10) 15.57% (control). The plant density (133 000 plant ha-1) decreased total bolting percent 43.56% as compared with the other plant densities (80 000 and 100 000 plant ha-1) 46.35 and 45.40% respectively. The results showed that the monogerm varieties were superior and more resistant to bolting as compared with the multigerm ones.

DOI: http://dx.doi.org/10.3126/ije.v4i2.12647

International Journal of Environment Vol.4(2) 2015: 256-270

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Published

2015-06-03

How to Cite

Al-Jbawi, E., Sabsabi, W., Gharibo, G., & Al-Sayed Omar, A. E.-M. (2015). Effect of sowing date and plant density on bolting of four sugar beet (Beta vulgaris L.) varieties. International Journal of Environment, 4(2), 256–270. https://doi.org/10.3126/ije.v4i2.12647

Issue

Vol. 4 No. 2 (2015)

Section

Research Papers

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