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            "bbox": {
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            "text": "soil profile before it can be used by crops."
        },
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            "text": "Matric potential - A negative pressure or suction head that is read by SMS and reflects the ability of soil to either retain or move water as a result of suction exerted by soil pores."
        },
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            "text": "Oscillator - A device that converts direct current (DC) from a power supply to an alternating current (AC) signal."
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            "text": "Runoff - Water that originates from landscapes during precipitation/irrigation events that does not infiltrate into the soil."
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            "text": "Soil moisture sensors - Devices that are used to measure water content of a soil by various techniques."
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            "text": "Soil texture - Composition of soil based on its particle sizes.\nVolumetric - A unit of measurement in which the water in a soil is described by the percent volume of the space that the water is occupying."
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            "text": "Voltage - Difference of potential energy between two points on a circuit.\nWater use efficiency - Percentage of applied water used by the intended plant."
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            "text": "References",
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            "text": "Allen, R.G., Pereira, L.S., Raes, D. and Smith, M., 1998. Crop evapotranspiration-Guidelines for computing crop water requirements-FAO Irrigation and drainage paper 56. FAO, Rome, 300(9), p.D05109.",
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            "text": "Blonquist Jr, J.M., Jones, S.B. and Robinson, D.A., 2006. Precise irrigation scheduling for turfgrass using a sub-surface electromagnetic soil moisture sensor. Agricultural Water Management, 84(1-2), pp.153-165.",
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            "text": "Easton, Z.M., Bock, E., 2016. Soil and soil water relationships. Virginia Cooperative Extension.",
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                "block_label": "reference_content"
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        },
        {
            "id": "p14.12",
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            "bbox": {
                "l": 34.08,
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                "r": 558.96,
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            "text": "Edaphic, 2021. Time domain reflectometry (TDR). https://edaphic.com.au/soil-water-compendium/time-domain-reflectometry-tdr/ (accessed 4/20/2022).",
            "attrs": {
                "block_label": "reference_content"
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            "id": "p14.13",
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            "bbox": {
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            "text": "Kelleners, T.J., Soppe, R.W.O., Robinson, D.A., Schaap, M.G., Ayars, J.E. and Skaggs, T.H., 2004. Calibration of capacitance probe sensors using electric circuit theory. Soil Science Society of America Journal, 68(2), pp.430-439.",
            "attrs": {
                "block_label": "reference_content"
            }
        },
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            "id": "p14.14",
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            "text": "Kukal, M.S., Irmak, S. and Sharma, K., 2020. Development and application of a performance and operational feasibility guide to facilitate adoption of soil moisture sensors. Sustainability, 12(1), p.321.",
            "attrs": {
                "block_label": "reference_content"
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        },
        {
            "id": "p14.15",
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            "bbox": {
                "l": 34.08,
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                "r": 574.08,
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            "text": "Labodia Prima, 2019. The Standing Wave (ADR) Measurement Principle. https://www.labodiaprima.com/amplitude-domain-reflectometry-adr (accessed 4/20/2022).",
            "attrs": {
                "block_label": "reference_content"
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            "bbox": {
                "l": 34.32,
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                "r": 440.4,
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            "text": "Ling, P., 2004. A review of soil moisture sensors. Assn. Flor. Prof. Bull, 886, pp.22-23.",
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                "block_label": "reference_content"
            }
        },
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            "id": "p14.17",
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            "text": "Maughan, T., Allen, L.N. and Drost, D., 2015. Soil moisture measurement and sensors for irrigation management.",
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