Evidence on shallow groundwater use by edible green vegetables such as Solanum pseudoca psicum, Ocimum basilicum and Lepidium sativum in a semi-arid climate condition

Houshang Ghamarnia and Erfan Khodaei

Agricultural Water Management, 2016, vol. 165, issue C, 198-210

Abstract: A number of lysimetric experiments were carried out from 2010 to 2011 to determine total water use, shallow groundwater contribution percentage and the effects of different shallow water table levels in the presence of supplementary surface irrigation on water requirements, wet yield production, and water use efficiencies of different edible green vegetables including Solanum pseudoca psicum, Ocimum basilicum and Lepidium sativum. These experiments were performed in a randomized complete block factorial experimental design with three replicates at the Lysimetric Research Station of Razi University, Kermanshah, Iran. Three treatments were applied to each experiment by maintaining groundwater with EC 2dSm−1 and different water table levels of 0.6, 0.80 and 1.10m, respectively. Supplementary surface irrigation with quality of 1dSm−1 was used during the experiments. The average total values of water use, surface water use, surface water saving percentages, groundwater uses and groundwater contribution percentages were found to be as 436mm, (208, 292, 324mm equal to 51, 32 and 24%) and (218, 134, 102mm equal to 49, 34 and 27%) for S. pseudoca psicum; 417mm (201, 279, 305mm equal to 52, 34 and 27%) and (206, 129, 102mm equal to 50, 31 and 25%) for O. basilicum and 415mm, (197, 299, 315mm equal to 53, 26 and 25%) and (209, 107 and 91mm equal to 51, 26 and 22%) for L. sativum, respectively. Generally, the results showed a higher wet weights and water use efficiencies for lower water table depths considering wet weights due to lower and higher surface water and groundwater uses, respectively.

Keywords: Groundwater contribution; Lysimeter; Supplementary irrigation; Water use efficiency (search for similar items in EconPapers)
Date: 2016
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Persistent link: https://EconPapers.repec.org/RePEc:eee:agiwat:v:165:y:2016:i:c:p:198-210

DOI: 10.1016/j.agwat.2015.10.028

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