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Umerjanje merilnikov in določitev vodozadrževalnih lastnosti tal za natančno namakanje na podlagi meritev vsebnosti vode v tleh
ID Železnikar, Špela (Author), ID Honzak, Luka (Author), ID Pečan, Urša (Author), ID Pintar, Marina (Author)

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Abstract
Voda postaja redka dobrina, zato je strokovno pravilno upravljanje vode za natančno namakanje ključnega pomena za povečanje primarne rastlinske produkcije in zmanjšanje stroškov rastlinske pridelave v kmetijstvu. Natančno namakanje temelji na meritvah vsebnosti vode v tleh, ki jo običajno merimo z merilniki, ki merijo dielektričnost tal. Merilniki so opremljeni s tovarniško umeritveno funkcijo, ki zaznano dielektričnost pretvarja v volumsko vsebnost vode, vendar slednja ne deluje ustrezno v vseh talnih tipih. Zato je za točne meritve vsebnosti vode v tleh smiselno preveriti, ali je potrebna uporaba talno specifične umeritve. Poleg tega je za natančno namakanje potrebna tudi ustrezna določitev vodozadrževalnih lastnosti tal, ki jih lahko določimo z uporabo več različnih postopkov in metod. V prispevku smo na izbranih vzorcih tal, pridobljenih iz lokacij po Sloveniji, kjer se izvaja natančno namakanje, prikazali rezultate različnih načinov določanja talno specifičnih umeritvenih funkcij z dvema tipoma merilnikov (SM150T, Delta-T Devices in MVZ 100, Eltratec). Primerjali smo tudi rezultate določanja vodozadrževalnih lastnosti tal z uporabo različnih metod.

Language:Slovenian
Keywords:natančno namakanje, merilniki, vsebnost vode v tleh, talna voda, merilniki vsebnosti vode v tleh, vodozadrževalne lastnosti tal, umeritev
Work type:Article
Typology:1.01 - Original Scientific Article
Organization:BF - Biotechnical Faculty
Publication status:Published
Publication version:Author Accepted Manuscript
Article acceptance date:26.02.2022
Year:2022
Number of pages:12 str.
Numbering:Vol. 118, No. 1
PID:20.500.12556/RUL-135989 This link opens in a new window
UDC:631
ISSN on article:1854-1941
DOI:10.14720/aas.2022.118.1.1742 This link opens in a new window
COBISS.SI-ID:103840515 This link opens in a new window
Publication date in RUL:06.04.2022
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Downloads:121
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Record is a part of a journal

Title:Acta agriculturae Slovenica
Publisher:Biotehniška fakulteta, Oddelek za agronomijo in Oddelek za zootehniko, Biotehniška fakulteta, Oddelek za agronomijo in Oddelek za zootehniko, Univerza v Ljubljani, Biotehniška fakulteta, Založba Univerze v Ljubljani
ISSN:1854-1941
COBISS.SI-ID:219581184 This link opens in a new window

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:26.02.2022

Secondary language

Language:English
Title:Calibration of soil moisture sensors, determination of soil water retention properties for precision irrigation based on soil water content measurements
Abstract:
Water is becoming a scarce commodity. Therefore, proper water management in precision irrigation is crucial to increase productivity and reduce the cost of crop production. Precision irrigation is based on measuring the soil water content, which is often measured with dielectric sensors that measure the apparent permittivity of the soil. Although the sensors are already equipped with a factory calibration function that converts the measured permittivity into volumetric water content, the function does not work properly for all soil types. It is therefore recommended to check whether a soil-specific calibration is required for accurate soil water content measurements. Precise irrigation also requires adequate determination of soil water retention properties, which can be determined using various procedures and methods. In this paper, we presented the results of applying different approaches to determine soil-specific calibration functions using two types of dielectric sensors (SM150T, Delta-T Devices and MVZ 100, Eltratec) in different soil samples obtained from locations in Slovenia where precision irrigation is performed. In addition, the results of determining the water retention properties of the soil using different methods were also compared.

Keywords:precision irrigation, soil moisture sensors, water retention properties, calibration methods

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