Response of Pepper Growth to Water Deficit in a Cold and Arid Environment

Hengjia Zhang, Shijie Wang, Xietian Chen and Haiyan Li

GBP Proceedings Series, 2025, vol. 4, 15-22

Abstract: To assess the response of chilli growth and dry matter to water deficit in sub-film drip irrigation, a field experiment was conducted in a cold and arid region of Northwest China in 2016. The experiment was designed with three water deficit (WD) levels: mild deficit (65%-75% in the field capacity, FC), medium deficit (55%-65% in FC) and severe (45%-55% in FC). Water deficit treatments were applied during the seedling, flowering and fruiting, full fruiting, and later fruiting stages. Full irrigation (75%-85% of field capacity) throughout the entire growing season was used as the control (CK). The results showed that different WD at seedling, flowering and fruiting, and full fruit of pepper significantly (P < 0.05) decreased plant height, stem diameter and leaf area index than CK. WD applied either at the seedling stage or during the flowering and fruiting stage decreased the above-ground biomass and root mass. Additionally, the reduction in aboveground biomass and root mass became more significant as the severity of WD increased.

Keywords: water deficit; pepper; plant height; stem diameter; leaf area index (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:axf:gbppsa:v:4:y:2025:i::p:15-22

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