USING IRRIGATION MANAGEMENT SYSTEMS FOR CABBAGE AND ASSESSING WATER USE EFFICIENCY | ||
| The Iraqi Journal of Agricultural Science | ||
| Article 1, Volume 43, Issue 4, August 2013, Pages 136-149 | ||
| Authors | ||
| Nameer. T. Mahdi; Hussein. A .Mohammad | ||
| Abstract | ||
| This research was conducted to assess the amount of water added for Cabbage, the actual evapotranspirtion, ETa and the water use efficiency under different irrigation systems including Micro-sprinkler irrigation (MSI), drip irrigation (DI), sub surface drip irrigation (SDI), and furrow irrigation (FI). The experiment was conducted in a field specialized in vegetable production in northern Baghdad at autumn season 2009 (latitude 33 north and longitude 45 east). The experiment was designed according to RCBD in four replications. The amount and time of irrigation were identified depending on the attrition of soil moisture by assessing the moisture content until the depletion of 50-55% of available water. The equation of water balance was used to determine ETa for each stages of plant growth (vegetative growth, leaves wrap, maturity and harvest). The results showed that the amounts of irrigation water were 3417.80, 2080.86, 1733.75 and 4612.44, m3.ha-1 for MSI, DI, SDI and FI respectively. Micro-irrigation systems (MSI, DI, and SDI) saved amount of irrigation water about 26%, 55%, and 62% comparing with FI. The total of ETa of cabbage was 405.82, 380.68, 364.70, and 393.43, mm.season-1 for MSI, DI, SDI, and FI respectively. The highest consumption of water was obtained at the MSI treatment. The increased percentage is 6.6%, 11.2% and 3.1% for DI, SDI and FI respectively. While the ETa increased percentage is 3.3% and 7.8% for FI treatment comparing with DI and SDI, respectively. The DI treatment increased 4.4% comparing with SDI. It is clear that micro-irrigation systems have reduced the amount of irrigation water and also reduced the water consumption of the plant, increased water use efficiency and saved 50% of irrigation water as compared with Furrow irrigation system. | ||
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