IRRIGATION WATER MANAGEMENT FOR SUGAR BEET CROP | ||||
| Fayoum Journal of Agricultural Research and Development | ||||
| Article 2, Volume 24, Issue 1, January 2010, Page 14-29 PDF (509.63 K) | ||||
| Document Type: Research articles. | ||||
| DOI: 10.21608/fjard.2010.195652 | ||||
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| Authors | ||||
| F.R.M Farrag; M.F.I El-Akram,; K.M.R. Youssef | ||||
| Soil, Water and Environment Res. Inst., A.R.C., Giza, Egypt | ||||
| Abstract | ||||
| Field experiments were conducted at Tameia Res. Station, Fayoum Governorate during 2007/2008 and 2008/2009 seasons to study the effect of the combination between two ridge width treatments, i.e. (R1): ridges of 60 cm width and (R2) : ridges of 120 cm width (beds planted from both sides), with four irrigation regimes, i.e. (I1) : 30%, (I2) : 45%, (I3) : 60% and (I4): 75% available soil moisture depletion (ASMD) on sugar beet yield and its components, quality and some water relations. A split - plot design with four replication was used. The main obtained results were as follows: 1. Root length, root diameter, root weight, fresh root yield / fed, sucrose, T.S.S., juice purity percentages and sugar yield/fed were significantly affected by ridge width, irrigation regime treatments and their interaction in both seasons, to different magnitudes. 2. Planting on ridges of 60 cm width and irrigation at 30% ASMD gave the highest root diameter (16.8, 17.3cm), root weight (2.64, 2.73gm) and root yield (19.78 and 20.56 t/fed in 2007/2008 and 2008/2009, respectively). However, the lowest averages were obtained from bed (R2) planting and irrigation at 75% ASMD in both seasons. Root length under both ridge width treatments significantly increased as ASMD increased from 30% to 75% in both seasons. 3. The highest sucrose %, i.e. 18.26 and 18.55% in the two successive seasons were detected from wide ridges planting and irrigation at 30% ASMD, whereas planting on ridges of 60 cm width and irrigation at 30% ASMD gave the highest sugar yield (3.58 and 3.80 t/ fed in 2007/2008 and 2008/2009 seasons), respectively. 4. Seasonal consumptive use (ETC) averaged 52.80 and 54.38 cm in the two successive seasons. The highest ETC values, i.e. 58.86 and 60.26 cm in 2007/2008 and 2008/2009 seasons, respectively were detected from planting on ridges of 60 cm width and irrigation at 30% ASMD. Planting on beds and irrigation at 75% ASMD gave the lowest ETC values, i.e. 46.82 and 47.73 cm in the two successive seasons. Planting on wide ridges (beds) decreased ETC by 7.00 and 8.71% in the two seasons. 5. Daily ETC rates started with low values, then increased during Jan. and Feb. months and reached its maximum values during March, then redecreased during April and May. The crop coefficient (KC) during the growing season months from November until May were 0.55, 0.7, 0.83, 1.05, 1.11, 0.79 and 0.59, respectively, (average of two seasons). 6. Planting on wide ridges (beds) and irrigation at 45% ASMD was found to be the optimum efficiency of water use, i.e. 8.018 and 8.021 kg roots/m3 water consumed in 2007/2008 and 2008/2009 seasons, respectively, as a treatment for water rationalization. | ||||
| Keywords | ||||
| Sugar beet yield; Quality; Ridging; Water relations | ||||
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