Effects of Water Deficit on Water Consumption Characteristics of Pepper under Mulched Drip Irrigation in the Hexi Oasis Region
Vol. 4 (2025): 2025 International Conference on Agricultural Sciences, Economics, Biomedical and Environmental Sciences (SEMBE 2025)
Received: 2026-05-23
Accepted: 2026-05-23
Published: 2026-05-23
Abstract
This study examined how varying degrees of water deficit influence the water consumption patterns of pepper under drip irrigation with mulch through a field trial. The experimental design included mild and moderate water deficits during the flowering and fruiting phases, as well as mild deficits during the full fruit and late fruiting stages. A fully irrigated treatment throughout the reproductive stage served as the control (CK). The findings revealed that across treatments, pepper water use characteristics — specifically water consumption modulus, rate, and total consumption — ranked as follows: full fruit stage > late fruiting stage > flowering and fruiting stage > seedling stage. Compared to CK, both water use intensity and total consumption generally declined as the severity of water deficit increased. Notably, mild water limitation at the seedling phase and water stress in the late fruiting stage had little effect on overall water use, whereas other deficit treatments significantly decreased total consumption by 9.90%-24.10% relative to CK. Overall, deficits during the seedling and late fruiting stages minimally influenced total water use, whereas reductions were most pronounced when stress occurred during the flowering and fruiting stage.
Keywords
References
[1] R. T. Watson, D. L. Albritton, T. Barker, I. Bashmakov, O. F. Canziani, R. Christ, U. Cubasch, et al., Climate Change 2001: Synthesis Report. A Contribution of Working Groups I, II and III to the Third Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge, UK: Cambridge Univ. Press, 2001. ISBN: 9780521807700.
[2] J. R. Petit, J. Jouzel, D. Raynaud, N. I. Barkov, J.-M. Barnola, I. Basile, et al., “Climate and atmospheric history of the past 420,000 years from the Vostok ice core, Antarctica,” Nature, vol. 399, pp. 429–436, 1999, doi: 10.1038/20859.
[3] J. Luterbacher, E. Xoplaki, C. Casty, H. Wanner, A. Pauling, and M. Küttel, “Mediterranean climate variability over the last centuries: A review,” in The Mediterranean Climate: An Overview of the Main Characteristics and Issues, P. Lionello, P. Malanotte-Rizzoli, and R. Boscolo, Eds. Amsterdam: Elsevier, 2006, pp. 27–148, doi: 10.1016/S1571-9197(07)80004-2.
[4] E. Fereres and R. G. Evans, “Irrigation of fruit trees and vines: an introduction,” Irrig. Sci., vol. 24, pp. 55–57, 2006, doi: 10.1007/s00271-005-0019-3.
[5] S. M. P. Carvalho, “Water availability in Almeria,” in Greenhouse Horticulture in Almería (Spain): Report on a Study Tour 24–29 January 2000, Horticultural Production Chains Group, 2000, pp. 39–47. ISBN: 9789067545938.
[6] B. Guo, B. Zhou, Z. Zhang, K. Li, J. Wang, J. Chen, and G. Papadakis, “A critical review of the status of current greenhouse technology in China and development prospects,” Appl. Sci., vol. 14, no. 13, p. 5952, 2024, doi: 10.3390/app14135952.
[7] B. G. Leib, H. W. Caspari, C. A. Redulla, P. K. Andrews, and J. J. Jabro, “Partial rootzone drying and deficit irrigation of ‘Fuji’ apples in a semiarid climate,” Irrig. Sci., vol. 24, pp. 85–99, 2006, doi: 10.1007/s00271-005-0013-9.
[8] A. Blanke, S. Rozelle, B. Lohmar, J. Wang, and J. Huang, “Water saving technology and saving water in China,” Agric. Water Manag., vol. 87, pp. 139–150, 2007, doi: 10.1016/j.agwat.2006.06.025.
[9] S. R. Downward and R. Taylor, “An assessment of Spain’s Programa AGUA and its implications for sustainable water management in the province of Almeria southeast Spain,” J. Environ. Manag., vol. 82, pp. 272–289, 2007, doi: 10.1016/j.jen-vman.2005.12.015.
[10] H. Yang, T. Du, and R. Qiu, “Improved water use efficiency and fruit quality of greenhouse crops under regulated deficit irrigation in northwest China,” Agric. Water Manag., vol. 179, pp. 193–204, 2017, doi: 10.1016/j.agwat.2016.05.029.
[11] Z. Zou and X. Zou, “Geographical and ecological differences in pepper cultivation and consumption in China,” Front. Nutr., vol. 8, p. 718517, 2021, doi: 10.3389/fnut.2021.718517.
[12] M. M. Peet, “Irrigation and fertilization,” in Tomatoes, Crop Production Science in Horticulture, E. Heuvelink, Ed. Wallingford, UK: CABI Publishing, 2005, pp. 171–198. ISBN: 9781845931490.
[13] A. Patel, N. L. Kushwaha, J. Rajput, and P. V. Gautam, “Advances in micro-irrigation practices for improving water use efficiency in dryland agriculture,” in Enhancing Resilience of Dryland Agriculture under Changing Climate: Interdisciplinary and Convergence Approaches. Singapore: Springer Nature Singapore, 2023, pp. 157–176. ISBN: 9789811991585.
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Published in2026-05-23 14:50:15
DOI 10.70088/n0bf5j85
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Journal Information
- Vol. 4 (2025): 2025 International Conference on Agricultural Sciences, Economics, Biomedical and Environmental Sciences (SEMBE 2025)
- 2026-05-23
- ISSN: (Print) 3078-770X/ (Online) 3078-7718
- Journal Homepage