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Testing a Low Cost Apparatus to Monitor Soil Salinity in Plant Physiology Experiment Using Arduino Platform
Communications in Soil Science and Plant Analysis ( IF 1.8 ) Pub Date : 2021-05-13 , DOI: 10.1080/00103624.2021.1919700
Vanessa Negrão-Rodrigues 1 , Grazielle Sales Teodoro 2 , Mario J. Marques-Azevedo 3 , Mauro Brum 4
Affiliation  

ABSTRACT

Soil salinization is a common problem impacting plant physiology and agricultural productivities. In order to monitor soil salinization in plant physiological experiments, a salinity monitoring system – SProb – was produced to improve our understanding of plant responses to salinity, using open hardware Arduino platform. An experiment was performed and designed to calibrate and check the viability and accuracy of SProb to be used in scientific researches. Salt concentrations were manipulated to identify sensor ability in determining salt accumulation or leaching in soils. Also, two mangrove plant species were grown to identify if root presence would affect soil salt measurements. The soil osmotic potential (Ψs) was estimated from SProb results and correlated with predawn and midday leaf water potential (Ψl) of the mangrove plants, to identify if Ψs would affect plants water regulations. It was also shown that SProb described well the soil salt accumulation or leaching along the time, and the measurements were not affected by the presence of roots. The ranges of Ψs matched with the range of mangrove Ψl, and the Ψl decreased with the decrease in Ψs (increase in salinity). It was confirmed that the SProb sensor is efficient, cheap and has enough accuracy to monitor soil salt concentration. Thus, SProb can be used in plant physiological experiments increasing our ability to make accurate science when such technology is not available in research centers.



中文翻译:

使用 Arduino 平台测试低成本设备以监测植物生理学实验中的土壤盐度

摘要

土壤盐渍化是影响植物生理和农业生产力的常见问题。为了在植物生理实验中监测土壤盐渍化,开发了一个盐度监测系统——SProb——使用开放硬件 Arduino 平台来提高我们对植物对盐度反应的理解。进行并设计了一项实验,以校准和检查用于科学研究的 SProb 的可行性和准确性。操纵盐浓度来确定传感器在确定土壤中的盐积累或浸出的能力。此外,还种植了两种红树林植物,以确定根系的存在是否会影响土壤盐分测量。土壤渗透势 (Ψ s ) 是根据 SProb 结果估计的,并与黎明前和中午叶水势 (Ψ s ) 相关联l ) 的红树林植物,以确定 Ψ s是否会影响植物的水分调节。还表明,SProb 很好地描述了土壤盐分随时间的积累或浸出,并且测量值不受根系存在的影响。Ψ s的范围与红树林Ψ l的范围相匹配,Ψ l随Ψ s的减小(盐度增加)而减小。经证实,SProb 传感器高效、廉价且具有足够的精度来监测土壤盐分浓度。因此,当研究中心没有此类技术时,SProb 可用于植物生理实验,提高我们进行准确科学的能力。

更新日期:2021-05-13
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