Ultrasonic Sensing of Plant Water Needs for Agriculture

Álvarez-Arenas, Tomas Gómez; Gil-Pelegrin, Eustaquio; Cuello, Joao Ealo; Fariñas, Maria Dolores; Sancho-Knapik, Domingo; Collazos Burbano, David Alejandro; Peguero-Pina, Jose Javier
July 2016
Sensors (14248220);Jul2016, Vol. 16 Issue 7, p1089
Academic Journal
Fresh water is a key natural resource for food production, sanitation and industrial uses and has a high environmental value. The largest water use worldwide (~70%) corresponds to irrigation in agriculture, where use of water is becoming essential to maintain productivity. Efficient irrigation control largely depends on having access to reliable information about the actual plant water needs. Therefore, fast, portable and non-invasive sensing techniques able to measure water requirements directly on the plant are essential to face the huge challenge posed by the extensive water use in agriculture, the increasing water shortage and the impact of climate change. Non-contact resonant ultrasonic spectroscopy (NC-RUS) in the frequency range 0.1–1.2 MHz has revealed as an efficient and powerful non-destructive, non-invasive and in vivo sensing technique for leaves of different plant species. In particular, NC-RUS allows determining surface mass, thickness and elastic modulus of the leaves. Hence, valuable information can be obtained about water content and turgor pressure. This work analyzes and reviews the main requirements for sensors, electronics, signal processing and data analysis in order to develop a fast, portable, robust and non-invasive NC-RUS system to monitor variations in leaves water content or turgor pressure. A sensing prototype is proposed, described and, as application example, used to study two different species: Vitis vinifera and Coffea arabica, whose leaves present thickness resonances in two different frequency bands (400–900 kHz and 200–400 kHz, respectively), These species are representative of two different climates and are related to two high-added value agricultural products where efficient irrigation management can be critical. Moreover, the technique can also be applied to other species and similar results can be obtained.


Related Articles

  • ECOLOGICAL TREATMENT METHOD OF THE DANUBE WATER FOR DRINKING WATER QUALITY IMPROVEMENT. Serban, Anca; Burtea, Mariana Carmen; Risnoveanu, Luxita // Annals of the University Dunarea de Jos of Galati: Fascicle II, ;2013, Vol. 36 Issue 2, p223 

    The Danube is a drinking water source in many locations along its flow from the Black Forest Mountains to Danube Delta. Water quality in the Danube has improved during the last decade, but further improvement is still needed. Although overall pollution has declined, mainly because of the drop in...

  • Ultrasonic level measurement benefits. Thomas, Tim // Processing (08968659);Dec2015 Supplement Water/Waste Processing, p20 

    The article compares ultrasonic and radar sensors, recognizing situations in which ultrasonic instruments may be a more effective choice. Continuous level measurements and limit-level detection are needed in water and wastewater treatment plants from a process engineering, water management and...

  • Even when the economic outlook is dim, keep the light on energy conservation. Whalen, Kevin; Katzel, Jeanine // Plant Engineering;Jun94, Vol. 48 Issue 7, p104 

    Focuses on the need for a common sense approach to plant energy management. Need to supplement the need for heat with waste heat and the need for water with previously used, but usable water; Energy savings in the boiler room.

  • 超声波土壤含水量检测装置的模型建立与验证. 李君; 徐岩; 姜锐; 杨洲; 陆华忠 // Transactions of the Chinese Society of Agricultural Engineering;2017, Vol. 33 Issue 13, p127 

    Soil water content is an important surface variable for describing the soil dryness. Soil water content estimation is used in the monitoring of extreme hydrologic events, weather prediction, irrigation management and water balance modeling. The phenomena of soil moisture expansion, drying...

  • Fusion of Ultrasonic and Spectral Sensor Data for Improving the Estimation of Biomass in Grasslands with Heterogeneous Sward Structure. Moeckel, Thomas; Safari, Hanieh; Reddersen, Björn; Fricke, Thomas; Wachendorf, Michael // Remote Sensing;Jan2017, Vol. 9 Issue 1, p98 

    An accurate estimation of biomass is needed to understand the spatio-temporal changes of forage resources in pasture ecosystems and to support grazing management decisions. A timely evaluation of biomass is challenging, as it requires efficient means such as technical sensing methods to assess...

  • Strategies for summer watering. Walheim, Lance // Sunset;Aug2000, Vol. 205 Issue 2, p70 

    Presents six steps on how give your garden the amount of water it needs without waste. Know your soil; Match your irrigation system to your plants; Irrigate plants to the correct depth. INSET: Hose sense..

  • New electronics guide seeds to water. Wood, Marcia // Agricultural Research;Dec95, Vol. 43 Issue 12, p17 

    Reports on the moisture-sensing planter designed by agricultural engineer Lyle M. Carter, from Shafter in California which helps ensure seeds receive the water they need for a healthy start. How it works.

  • Noncontact and noninvasive study of plant leaves using air-coupled ultrasounds. Gómez Álvarez-Arenas, T. E.; Sancho-Knapik, D.; Peguero-Pina, J. J.; Gil-Pelegrín, E. // Applied Physics Letters;11/9/2009, Vol. 95 Issue 19, p193702 

    Plant leaves are studied by the analysis of the magnitude and phase spectra of their thickness mechanical resonances. These resonances appear at ultrasonic frequencies and have been excited and sensed using air-coupled ultrasounds. In spite of the complex leaf microstructure, the effective...

  • Evaluation of Spatial Application Accuracy of Sensing-Spraying System for Variable Rate Application of Oil Palm Trees. Hassen, Nasir Salim; Sidik, Nor Azwadi C.; Hassan, Fargham // Advances in Environmental Biology;Jun2014, Vol. 8 Issue 10, p579 

    Precious agricultural agents are lost during conventional spraying systems. The use of sensing and spraying system to spray according to the plant size reduces spray losses which reduces farming costs significantly and contributes to environmentally friendly crop farming. The continuous change...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics