Evaluation of instruments for monitoring the soil–plant continuum

Dainese, Roberta; Lopes, Bruna de Carvalho Faria Lima; Fourcaud, Thierry; Tarantino, Alessandro

doi:10.1016/j.gete.2021.100256

Cited by 3 publications

(2 citation statements)

References 37 publications

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“…A third copper-constantan soldered thermocouple is located inside the sample chamber body to measure the temperature of the instrument for temperature compensation purposes. The use of the PSY1 Stem Psychrometer has proven to be reliable for monitoring the water potential, after validation with other techniques, including the Scholander pressure chamber [181,182]. Kokkotos et al used the PSY1 Stem Psychrometer to evaluate the variation in water potential in response to alternate fruit bearing [183].…”

Section: Thermocouple Psychrometermentioning

confidence: 99%

Continuous Plant-Based and Remote Sensing for Determination of Fruit Tree Water Status

Carella,

Bulacio Fischer,

Massenti

et al. 2024

Horticulturae

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Climate change poses significant challenges to agricultural productivity, making the efficient management of water resources essential for sustainable crop production. The assessment of plant water status is crucial for understanding plant physiological responses to water stress and optimizing water management practices in agriculture. Proximal and remote sensing techniques have emerged as powerful tools for the non-destructive, efficient, and spatially extensive monitoring of plant water status. This review aims to examine the recent advancements in proximal and remote sensing methodologies utilized for assessing the water status, consumption, and irrigation needs of fruit tree crops. Several proximal sensing tools have proved useful in the continuous estimation of tree water status but have strong limitations in terms of spatial variability. On the contrary, remote sensing technologies, although less precise in terms of water status estimates, can easily cover from medium to large areas with drone or satellite images. The integration of proximal and remote sensing would definitely improve plant water status assessment, resulting in higher accuracy by integrating temporal and spatial scales. This paper consists of three parts: the first part covers current plant-based proximal sensing tools, the second part covers remote sensing techniques, and the third part includes an update on the on the combined use of the two methodologies.

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Section: Thermocouple Psychrometermentioning

confidence: 99%

Continuous Plant-Based and Remote Sensing for Determination of Fruit Tree Water Status

Carella,

Bulacio Fischer,

Massenti

et al. 2024

Horticulturae

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“…In the SPAC water vapor dynamic circulation system, plants are the main link connecting soil and atmosphere [1][2][3][4][5]. Water reaches plant roots through soil, leaves through plant stems, then diffuses from leaf stomata to the static air layer, and finally participates in the atmospheric turbulent transformation to form a unified, dynamic, and mutual feedback continuous system [6,7].…”

Section: Introductionmentioning

confidence: 99%

Effect of Different Water Treatments in Soil-Plant-Atmosphere Continuum Based on Intelligent Weighing Systems

Gao

Guo

Shi

et al. 2022

Water

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In order to meet the needs of dynamic continuous monitoring of soil–plant–atmosphere continuum (SPAC), a new soil, plant, atmosphere analysis system has been established based on an intelligent weighing system (IWS). Four types of irrigation treatments (90%, 80%, 70%, and 60% of field capacity (FC)) were conducted on lettuce (Lactuca sativa var. ramosa Hort.) for two-season planting experiments. Regarding the soil, the relative system weight of IWS showed a significant linear correlation with the soil volumetric moisture content (SWC) (R2 = 0.64–0.94). When the SWC increased by 1.00%, the soil weight increased by 56–62 g. Regarding plants, the IWS also clearly reflected the changes in plant weight gain, transpiration rate, and stomatal conductance at different growth stages. After verification, the relative errors of the transpiration rate and stomatal conductance measured by the IWS were −9.60–22.30% and −7.20–22.20%, respectively. Regarding the atmospheric environment, the variation trend of the crop evapotranspiration (ETc) based on the IWS and the reference crop evapotranspiration (ET0) calculated with meteorological parameters were consistent. However, the numerical difference was in the uncertainty of the crop coefficient (Kc). The ETc of lettuce under the 80% FC treatment was the highest. Accordingly, a daily online measurement method for Kc was established. The Kc values of lettuce at different growth stages were 0.88, 1.22, and 2.43, respectively. The growth, yield, and water use efficiency (WUE) of crops under 80% FC treatment compared with other treatments significantly increased by 11.07–21.05%, 0.91–9.89%, and 2.16–15.80%, respectively. Therefore, the 80% FC was adopted as the irrigation low limit of potted lettuce. The experimental results provide a theoretical basis for further guiding crop irrigation.

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Effects of hydrogen sulfide on grass traits and water-gas transport in grass-planted unsaturated soil

et al. 2024

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Vegetation has been found to improve the hydrological performance of landfill cover. However, existing studies ignore effects of hydrogen sulphide (H2S), which is a toxic odour generated from municipal solid wastes. H2S is a potential signalling molecule in regulating plant-stomata aperture, but how the plant-H2S interaction affects the water-gas transport in soil remains unknown. This study aimed to investigate effects of H2S on Bermuda grass growth and its influence on water-gas transport in unsaturated soils. Soil columns, with and without vegetation, were prepared and fumigated with different H2S concentrations. These columns were subjected to controlled drought and rainfall sequentially. The results showed that grass leaves almost wilted without H2S fumigation due to the Pythium diseases caused by antecedent waterlogged conditions. In contrast, H2S fumigation promoted grass growth because of the fungicidal effects of H2S. Upon drought, H2S fumigation caused stomata closure, which resulted in a lower matric suction in the vegetated soil than that without H2S fumigation. Accordingly, H2S concentration reduced because of oxidation by metal oxides in soil. Upon subsequent rainfall, more infiltration but lower matric suction was observed in vegetated soils than that in bare case, whereas H2S concentration decreased continuously due to gas dissolution in the pore water. Direct application of laboratory findings herein to field cases should be used with cautions, because the applied continuous lightening and low evapotranspiration rate of the soil column tests may not be representative to field conditions.

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Evaluation of instruments for monitoring the soil–plant continuum

Cited by 3 publications

References 37 publications

Continuous Plant-Based and Remote Sensing for Determination of Fruit Tree Water Status

Continuous Plant-Based and Remote Sensing for Determination of Fruit Tree Water Status

Effect of Different Water Treatments in Soil-Plant-Atmosphere Continuum Based on Intelligent Weighing Systems

Effects of hydrogen sulfide on grass traits and water-gas transport in grass-planted unsaturated soil

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