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International Journal of Soil Science
  Year: 2017 | Volume: 12 | Issue: 2 | Page No.: 72-83
DOI: 10.3923/ijss.2017.72.83
 
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Re-using Diluted Reverse Osmosis Brine Water on the Growth of Two Varieties of Onion (Allium cepa L.)

Jalal Ahmed Said Mohammad Al-Tabbal

Abstract:
Background and Objective: High water demand which intensified the problem of water shortage enforced the decision maker for looking to new non-conventional water resources. The objective of this study was to discover the effect of using diluted reverse osmosis (RO) brine (reject) water on the growth of two onion (Allium cepa L.) varieties. Materials and Methods: The research work was conducted with two cultivars: ‘Giza 20’ and ‘Grano Texas’ during the period of 2011/2012 and 2012/2013 growing seasons. Twelve similar seedlings of each cultivar were planted in eighty four pots. Six levels of salinity were applied to the plant: Control (tap water with EC = 0.5 dS m–1), 1, 2, 3, 4 and 5 dS m–1.The treatments (onion cultivars and different levels of salinity) were laid out in a randomized complete block design with 7 replications. Each treatment and replication was conducted in a separate pot. During different stages of crop growth, data of different parameters were recorded 3 times at an interval of 30 days starting after transplanting. Data were analyzed by two way ANOVA and SAS. Results: Higher water salinity significantly p<0.05 reduced plant height, number of leaves/plant, neck diameter, plant fresh weight, bulb fresh weight, bulb length and diameter and dry matter content of the bulb in both cultivars in Jordan. ‘Grano Texas’ variety produced significantly higher yield than ‘Giza 20’ at all diluted brine water used. Increasing water salinity did not increase the concentration of several nutrients in the plant leaves except for magnesium while decreased the accumulation of copper and lead by leaves while, sharply increased in electrical conductivity, calcium, magnesium, sodium, total cationic ions, sodium absorption ratio and exchangeable sodium percentage in the soil due to irrigation with water which ha?he salinity up to 4.0 dS m–1. Conclusion: Onion varities with higher tolerant to saline water such as ‘Grano Texas’ onion can be irrigated with RO brine water.
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How to cite this article:

Jalal Ahmed Said Mohammad Al-Tabbal , 2017. Re-using Diluted Reverse Osmosis Brine Water on the Growth of Two Varieties of Onion (Allium cepa L.). International Journal of Soil Science, 12: 72-83.

DOI: 10.3923/ijss.2017.72.83

URL: https://scialert.net/abstract/?doi=ijss.2017.72.83

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