ISSN 2756-3804
International Journal of Irrigation and Water Management ISSN 5423-5294 Vol. 2 (10), pp. 001-004, October, 2015. © International Scholars Journals
Full Length Research Paper
Effects of limited irrigation on root yield and quality of sugar beet (Beta vulgaris L.)
Mahmoodi R1, Maralian, H.2* and Aghabarati, A3
1Department of agriculture, Buali Sina University, Hamadan, Iran.
2Department of Plant Productions. Moghan Junior College of agriculture, University of Mohaghegh- Ardabili, Ardabil, Iran.
3Tarbiat Modares University, Tehran, Iran.
Accepted 24 October, 2014
Abstract
This field study was conducted in order to investigate the yield and quality of sugar beet cv zargan in relation to different irrigation regimes during 2005 at Ardabil conditions. The experimental design was a randomized complete block design with four replicates. In this experiment irrigation regimes were I1 = Irrigation at 13.3 F.C (30% F.C), I2b= Irrigation at 15.5 F.C (50% F.C), I3 = Irrigation at 17.7 F.C (70% F.C) and I4 = Irrigation at 19.9 F.C (90% F.C). Parameters such as root yield (t/ha), leaf yield (t/ha), sugar content (%), Molasses (%), pure sugar content (%), white sugar yield (t/ha), Na (mmol/100 g root), K (mmol/100 g root) were evaluated. Irrigation treatments had a significant effect on sugar yield and its quality. Potassium concentration was not significantly affected by irrigation treatments. Results of irrigation treatments showed that the optimum soil water content for root yield is 70% of field capacity with 78.5 t/ha. The minimum root yield (52.5 t/ha) was observed at 90% of field capacity. Irrigation at 30, 50 and 70% of field capacity (I1, I2 and I3) had same effect on sugar content while sugar content decreased at 90% field capacity (I4). When the available soil water content was at 70% of field capacity, maximum root yield and quality was observed.
Key word: Beta vulgaris, irrigation, root yield, sugar quality.