Investigating of zeolite role in modifying the effect of drought stress in hemp: Antioxidant enzymes and oil content

Adapting the cultivation of industrial hemp (Cannabis sativa L.) to marginal lands: A review

“…Although significant, these decreases do not imply critical crop failures, and the yield losses induced by water shortages might be partially compensated with the water savings of reduced irrigation. Only Bahador and Tadayon (2020) reported critical decreases of aboveground biomass and seed productivities (decreases of 71.3% and 81.6%, respectively, from the value of the well‐irrigated control) under Mediterranean climate, although they did not report the amounts of water supply for the different treatments. Strong decreases of aboveground biomass and seed productivities were also reported in an arid climate (Bsk) between two irrigation treatments: a well‐irrigated treatment and a dry treatment in which the crop was only irrigated during the seedling establishment phase.…”

“…As a mean of 10 cultivars, aboveground biomass and seed productivities decreased respectively by 60.3% and 67.0% from the values of the control (Campbell et al, 2019). Hemp seed yield appears to be particularly susceptible to water availability during the seed ripening phase (Bahador & Tadayon, 2020; Campbell et al, 2019) and was also recently reported to be susceptible to high temperatures (Baldini et al, 2020; Ferfuia et al, 2021).…”

“…In fact, hemp was reported to be particularly susceptible to water shortage during the phases of germination, emergence and during the early stages of its growth (Struik et al, 2000). This is particularly highlighted by the fact that most of the studies investigating hemp's tolerance to water stress at agronomic scale irrigated during the first stages of its growth and only initiated to apply the different irrigation regimes at a later growth stage (Bahador & Tadayon, 2020; Campbell et al, 2019; Cosentino et al, 2013; García‐Tejero et al, 2019; Herppich et al, 2020).…”

“…In the frame of a cultivation under dry climates, hemp might be suited under specific conditions. Long periods of water shortage under a high evaporative demand can dramatically affect the yield (Bahador & Tadayon, 2020; Campbell et al, 2019). This is particularly true if the hemp crop is grown on a sandy soil that does no retain water, or if it is grown on a shallow soil or on a soil presenting a compaction layer preventing the development of the taproot.…”

Impact of Zeolite from Coal Fly Ash on Soil Hydrophysical Properties and Plant Growth

“…Ozbahce et al [40] tested the efficiency of natural zeolite clinoptilolite combined with different irrigation levels on potato growth, showing the positive effects of different zeolite doses on tuber yield and quality under water deficit conditions. Bahador and Tadayon [41] demonstrated that zeolite application reduces the negative impact of water deficit on industrial plants such as hemp. The authors showed that under different water deficit conditions, zeolite has effects on antioxidant enzymes in leaves and carotenoid content.…”