Effets de l’hydrogel sur la survie et la croissance des plantules d’arganier sur une parcelle de régénération en climat aride.

Defaa, Chamchelmaarif; Achour, Ahmed; Mousadik, Abdelhamid El; Maanda, F

doi:10.4314/jab.v92i1.3

Cited by 5 publications

(5 citation statements)

References 19 publications

(16 reference statements)

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“…Under reduced irrigation frequencies, hydrogel amendment allowed for significantly improved growth in potting medium, clay- and sand-containing soils, leading to growth increased by 4%, 3% and 6% respectively, in comparison with non-amended conditions. These observations are in line with studies on Argania spinosa in arid region (C Defaa 2015), and on cucumber and basil plants in sandy soils (Montesano et al 2015).…”

Section: Resultssupporting

confidence: 91%

“…On the other hand, the growths recorded with hydrogel supplementation were not significantly affected across conditions, except for clay-containing soils during limited watering. These observations are consistent with studies with Argania spinosa on arid region [22], and on cucumber and basil plants in sandy soils [11]. Under limited irrigation, hydrogel supplementation led to significantly improved growth in potting medium, sand- and clay-containing soils with heights of 108%, 101% and 107% their initial heights, respectively.…”

Section: Resultssupporting

confidence: 91%

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Hydrogels improve plant growth in Mars analog conditions

Peyrusson

2021

Preprint

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Plants will be fundamental components of future human missions to Mars, and cultivation will probably suffer from the lack of optimal soils as well as of available liquid water. Additionally, the question as to whether Mars soils are suitable for plant cultivation is still open. Hydrogels are polymers able to absorb large quantity of water and have been shown to increase water retention in the soil, thus increasing plant establishment and growth. This work reports on the short-term assessment of plant growth in Mars soil analogs supplemented with hydrogels, in the constrained environment of a simulated life-on-Mars mission. Soil analogs consisted in sand and clay-rich material, sampled in the vicinity of the Mars Desert Research Station, a Mars analog facility surrounded by soils sharing similarities with mineralogical and chemical composition of Martian soils. Heights and dry biomass of Mentha spicata and seed germination of Raphanus sativus were monitored. Results revealed that clay-containing soil was the most unfavorable for the growth of control plants. The deleterious effects of Mars soil analogs on plant growth were potentiated under limited irrigation. By contrast, hydrogel amendment allowed for an overall improvement of plant endurance in Mars soil analogs, more pronounced under low watering conditions, leading to almost constant masses across conditions. Additionally, results point to an increase of seed germination rate in sand, which creates a dense medium with low water retention, that hydrogels might help loosening. The results suggest that Mars soil analogs can support the growth of plants in the tested conditions, and raise the hypothesis that in situ soils might be suitable for future exploration of Mars.

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Section: Resultssupporting

confidence: 91%

Section: Resultssupporting

confidence: 91%

Hydrogels improve plant growth in Mars analog conditions

Peyrusson

2021

Preprint

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“…According to Wang and Boogher [20], hydrogels absorb various amounts of water during expansion and have been found to increase water retention in potting media, thus reducing the irrigation frequency and delaying the onset of wilting. Adding hydrogel to soil demonstrated a positive impact on the development of argan seedling parameters [21], it significantly enhanced growth, root collar diameter and the slenderness index of plants. The biodegradable superabsorbent cellulose-based hydrogel used by Montesano et al [22] for sweet basil plants grown on perlite with hydrogel added showed an increase in fresh biomass.…”

Section: Resultsmentioning

confidence: 96%

In vitro clonal propagation and efficient acclimatization with use of hydrogel of intensively sweet medicinal plant Lippia dulcis Trev.

Tomaszewska-Sowa

2020

Herba Polonica

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Summary Introduction: The leaves of Lippia dulcis contain high amounts of hernandulcin. It is one thousand fold sweeter than sucrose, however, it hardly contains any calories. Objective: The aim of this research was to optimalisation of micropropagation and acclimatization of L dulcis Methods: The nodal explants were inoculated on phytohormone-free MS medium. After 6 weeks the explants were inoculated onto the MS medium with different plant growth regulators. Well-developed rooted plantlets were adapted to ex vitro conditions using hydrogel. Results: On the medium with BAP and NAA the highest number of shoots were produced. The higest average shoot length, number of the leaves and the leaf area were recorded on the medium with GA3. Adding IBA increased the number of roots. The addition of hydrogel enhanced the acclimatization efficiency. Conclusions: There was observed a positive, stimulating influence of growth regulators on mass propagation and increase in the number of leaves and the leaf area and influence of hydrogel on the development of plantlets during acclimatization.

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“…In Morocco, hydrogels have been noted to have a highly significant effect on plant growth, contributing to remarkable height growth of argan plants from the fourth month after planting [12]. Additionally, Tyagi et al [13] and Hou et al [14] observed a stimulating hydrophilic superabsorbent effect on the yield of different crops, such as potatoes and maize, under various soil conditions According to Johnson [15], the use of hydrogels increases available moisture in the root zone, which implies longer intervals between irrigations.…”

Section: Introductionmentioning

confidence: 99%

Innovative Solutions for Drought: Evaluating Hydrogel Application on Onion Cultivation (Allium cepa) in Morocco

Bergui

Abouabdillah

Bourioug

et al. 2023

Water

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Throughout the last decade, and particularly in 2022, water scarcity has become a critical concern in Morocco and other Mediterranean countries. The lack of rainfall during spring was worsened by a succession of heat waves during the summer. To address this drought, innovative solutions, including the use of new technologies such as hydrogels, will be essential to transform agriculture. This paper presents the findings of a study that evaluated the impact of hydrogel application on onion (Allium cepa) cultivation in Meknes, Morocco. The treatments investigated in this study comprised two different types of hydrogel-based soil additives (Arbovit® polyacrylate and Huminsorb® polyacrylate), applied at two rates (30 and 20 kg/ha), and irrigated at two levels of water supply (100% and 50% of daily crop evapotranspiration; ETc). Two control treatments were included, without hydrogel application and with both water amounts. The experiment was conducted in an open field using a completely randomized design. The results indicated a significant impact of both hydrogel-type dose and water dose on onion plant growth, as evidenced by various vegetation parameters. Among the hydrogels tested, Huminsorb® Polyacrylate produced the most favorable outcomes, with treatment T9 (100%, HP, 30 kg/ha) yielding 70.55 t/ha; this represented an increase of 11 t/ha as compared to the 100% ETc treatment without hydrogel application. Moreover, the combination of hydrogel application with 50% ETc water stress showed promising results, with treatment T4 (HP, 30 kg, 50%) producing almost the same yield as the 100% ETc treatment without hydrogel while saving 208 mm of water.

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Effets de l’hydrogel sur la survie et la croissance des plantules d’arganier sur une parcelle de régénération en climat aride.

Cited by 5 publications

References 19 publications

Hydrogels improve plant growth in Mars analog conditions

Hydrogels improve plant growth in Mars analog conditions

In vitro clonal propagation and efficient acclimatization with use of hydrogel of intensively sweet medicinal plant Lippia dulcis Trev.

Innovative Solutions for Drought: Evaluating Hydrogel Application on Onion Cultivation (Allium cepa) in Morocco

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