دورية أكاديمية
Supplemental greenhouse lighting increased the water use efficiency, crop growth, and cutting production in Cannabis sativa
العنوان: | Supplemental greenhouse lighting increased the water use efficiency, crop growth, and cutting production in Cannabis sativa |
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المؤلفون: | Cristian E. Collado, Seung Jae Hwang, Ricardo Hernández |
المصدر: | Frontiers in Plant Science, Vol 15 (2024) |
بيانات النشر: | Frontiers Media S.A., 2024. |
سنة النشر: | 2024 |
المجموعة: | LCC:Plant culture |
مصطلحات موضوعية: | HEMP, stock plant, propagation, water management, water reduction, crop yield, Plant culture, SB1-1110 |
الوصف: | The expanding cannabis production sector faces economic challenges, intensified by freshwater scarcity in the main US production areas. Greenhouse cultivation harnesses sunlight to reduce production costs, yet the impact of greenhouse light levels on crucial production components, such as plant growth, branching, and water use efficiency (WUE), remains poorly understood. This study aimed to assess the effects of combined sunlight and supplemental lighting on the crop’s main production components and leaf gas exchange of Cannabis sativa ‘Suver Haze’ in the vegetative stage. Within a greenhouse, LED lighting provided at intensities of ~150, 300, 500, and 700 µmol m-2 s-1 (18-hour photoperiod), combined with solar radiation, resulted in average daily light integrals of 17.9, 29.8, 39.5, and 51.8 mol m-2 d-1. Increasing light levels linearly increased biomass, leaf area, and the number of branches per plant and square meter, with respective rates of 0.26 g, 32.5 cm2, and 0.41 branches per mole of additional light. As anticipated, crop evapotranspiration increased by 1.8-fold with the increase in light intensity yet crop WUE improved by 1.6-fold when comparing the lowest and highest light treatments. Moreover, water requirements per unit of plant biomass decreased from 0.37 to 0.24 liters per gram when lighting increased from ~18 to 52 mol m-2 d-1, marking a 35% reduction in evapotranspiration. These results were supported by increments in leaf photosynthesis and WUE with light enhancement. Furthermore, our findings indicate that even 52 mol m-2 d-1 of supplemental lighting did not saturate any of the crop responses to light and can be economically viable for cannabis nurseries. In conclusion, light supplementation strongly enhanced photosynthesis and plant growth while increasing WUE. Additionally, a comprehensive discussion highlights the shared physiological mechanisms governing WUE in diverse plant species and their potential for water conservation under enhanced lighting conditions. |
نوع الوثيقة: | article |
وصف الملف: | electronic resource |
اللغة: | English |
تدمد: | 1664-462X |
العلاقة: | https://www.frontiersin.org/articles/10.3389/fpls.2024.1371702/fullTest; https://doaj.org/toc/1664-462XTest |
DOI: | 10.3389/fpls.2024.1371702 |
الوصول الحر: | https://doaj.org/article/92f2cd8eb83b4615a5b33177c4180d5fTest |
رقم الانضمام: | edsdoj.92f2cd8eb83b4615a5b33177c4180d5f |
قاعدة البيانات: | Directory of Open Access Journals |
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