scholarly journals A Non-Invasive Soil Moisture Sensing System Electronic Architecture: A Real Environment Assessment

Sensors ◽  
2020 ◽  
Vol 20 (21) ◽  
pp. 6147
Author(s):  
Leonardo Franceschelli ◽  
Annachiara Berardinelli ◽  
Marco Crescentini ◽  
Eleonora Iaccheri ◽  
Marco Tartagni ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Electronic Circuit ◽  
Silty Clay ◽  
Non Invasive ◽  
Fast Estimation ◽  
Sensing System ◽  
Real Environment ◽  
Loam Soil ◽  
Rapid Moisture ◽  
Moisture Sensing

This paper will show the electronic architecture of a portable and non-invasive soil moisture system based on an open rectangular waveguide. The spectral information, measured in the range of 1.5–2.7 GHz, is elaborated on by an embedded predictive model, based on a partial least squares (PLS) regression tool, for the estimation of the soil moisture (%) in a real environment. The proposed system is composed of a waveguide, containing Tx and Rx antennas, and an electronic circuit driven by a microcontroller (MCU). It will be shown how the system provides a useful and fast estimation of moisture on a silty clay loam soil characterized by a moisture range of about 9% to 32% and a soil temperature ranging from about 8 °C and 18 °C. Using the PLS approach, the moisture content can be predicted with an R2 value of 0.892, a root mean square error (RMSE) of 1.0%, and a residual prediction deviation (RPD) of 4.3. The results prove that it is possible to make accurate and rapid moisture assessments without the use of invasive electrodes, as currently employed by state-of-the-art approaches.

Smart Multi-Level Soil Moisture Sensing System

2021 ◽  
Author(s):  
Warisara Sriphanthaboot ◽  
Treetep Saengow ◽  
Kasama Kamonkusonman ◽  
Minthorn Phunthawornwong ◽  
Pongpith Simmanee ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Sensing System ◽  
Multi Level ◽  
Moisture Sensing

Irrigation Automation with a Soil Moisture Sensing System

1980 ◽  
Vol 23 (3) ◽  
pp. 0649-0652 ◽  
Author(s):  
Hollis Shull ◽  
A. S. Dylla
Keyword(s):  
Soil Moisture ◽  
Sensing System ◽  
Moisture Sensing

Non-invasive soil moisture sensing based on open-ended waveguide and multivariate analysis

2017 ◽  
Vol 265 ◽  
pp. 236-245 ◽  
Author(s):  
G. Luciani ◽  
A. Berardinelli ◽  
M. Crescentini ◽  
A. Romani ◽  
M. Tartagni ◽  
...  
Keyword(s):  
Multivariate Analysis ◽  
Soil Moisture ◽  
Non Invasive ◽  
Moisture Sensing

scholarly journals Greenhouse Gas Emissions from Pecan Orchards in Semiarid Southern New Mexico

HortScience ◽  
2018 ◽  
Vol 53 (5) ◽  
pp. 704-709
Author(s):  
Darby S. Kellum ◽  
Manoj K. Shukla ◽  
John Mexal ◽  
Sanjit Deb
Keyword(s):  
Soil Moisture ◽  
Moisture Content ◽  
Greenhouse Gas ◽  
Ghg Emissions ◽  
Irrigation Event ◽  
Driving Factor ◽  
Silty Clay ◽  
Nitrogen Application ◽  
La Mancha ◽  
Loam Soil

Greenhouse gas (GHG) emissions are fueling global climate change, with methane and nitrous oxide being the primary agricultural gases emitted. It has been shown that N2O emissions correlate to moisture content fluctuations; however, emissions from agricultural fields in the semiarid regions of the Southwest where rewetting events occur regularly are not well established. The scope of this study was to quantify GHG emissions in correlation to soil moisture fluctuations and fertilizer application. The study was conducted continuously in two pecan [Carya illinoinensis (Wangenh.) K. Koch] orchards between Aug. 2010 and Aug. 2011 on a sandy loam soil (La Mancha) and a silty clay loam soil (Leyendecker), both under normal management practices. The small chamber technique was used to measure GHGs. Emissions varied greatly throughout the year. The largest flux of CO2 at La Mancha and Leyendecker both occurred during a drying event immediately following an irrigation event: 84,642.49 μg·m−2·h−1 and 30,338.24 μg·m−2·h−1, respectively. The net CH4 flux at Leyendecker and La Mancha was close to zero with the largest emissions occurring during wetting events. Results showed that N2O emissions were maintained near the baseline except for the few days following an irrigation event. The largest emission peak at La Mancha occurred after irrigation and nitrogen application: 322.06 μg·m−2·h−1. The largest emission peaks of 26.37 and 1.13 μg·m−2·h−1 at Leyendecker and La Mancha, respectively, occurred after irrigation, nitrogen application, and tillage. Nitrogen application was the driving factor affecting N2O emissions at La Mancha, whereas soil moisture content was the driving factor at Leyendecker. Emission factors (EFs) at La Mancha and Leyendecker were 0.49% and 0.05%, respectively. A thorough accounting of GHG emissions is necessary for budgeting and identifying mitigation policy.

Effect The Treatments of Biofertilizer and Mineral Fertilizer on Content of N P K of Soil Cultivated With Crop Corn (Zea Mays L).

2019 ◽  
Vol 9 (2) ◽  
pp. 247-256
Author(s):  
Mohammed Aajmi Salman ◽  
Jawad A. Kamal Al-Shibani
Keyword(s):  
Zea Mays ◽  
Zea Mays L ◽  
Mineral Fertilizer ◽  
Silty Clay ◽  
Clay Loam ◽  
Potassium Fertilizer ◽  
Clay Loam Soil ◽  
Silty Clay Loam ◽  
Fall Season ◽  
Loam Soil

Beneficial microorganisms play a key role in the availability of ions minerals in the soil and use Randomized Complete Block Desing ( R.C.B.D ). The objective of this paper to the study effect of the of biofertilizer and miniral treatments on availability of NPK for crop corn zea mays L.Two types of biofertilizer are Bacterial Bacillus subtilis and Fungal Trichoderma harianum. Three levels of potassium fertilizer are (2.9533, 0.4000 and 2.9533). A field experiment in fall season of 2018 Has been conducted in silty clay loam soil. The experimental Results indicated that Bacillus and Trichoderma inoculation separately or together Have made a significant effect to increase in the availability of N P K in the soil compare to other treatments. The grain yield is where (2.9533, 0.4000 and 2.9533) of bacterial and fungal bio-fertilizer and potassium fertilizers respectively as compared to the control.

Evaluation of Presswheels and Seed Coverers for Direct Seeding of Brassica

HortScience ◽  
1997 ◽  
Vol 32 (4) ◽  
pp. 599E-600
Author(s):  
Regina P. Bracy ◽  
Richard L. Parish
Keyword(s):  
Soil Moisture ◽  
Sandy Loam ◽  
Visual Observation ◽  
Mustard Seed ◽  
High Soil Moisture ◽  
Loam Soil ◽  
Direct Seeded ◽  
Plant Emergence ◽  
Moisture Conditions ◽  
Determine Effect

Improved stand establishment of direct-seeded crops has usually involved seed treatment and/or seed covers. Planters have been evaluated for seed/plant spacing uniformity, singulation, furrow openers, and presswheel design; however, effects of presswheels and seed coverers on plant establishment have not been widely investigated. Five experiments were conducted in a fine sandy loam soil to determine effect of presswheels and seed coverers on emergence of direct-seeded cabbage and mustard. Seed were planted with Stanhay 870 seeder equipped with one of four presswheels and seed coverers. Presswheels included smooth, mesh, concave split, and flat split types. Seed coverers included standard drag, light drag, paired knives, and no coverer. Soil moisture at planting ranged from 8% to 19% in the top 5 cm of bed. Differences in plant counts taken 2 weeks after planting were minimal with any presswheel or seed coverer. Visual observation indicated the seed furrow was more completely closed with the knife coverer in high soil moisture conditions. All tests received at least 14 mm of precipitation within 6 days from planting, which may account for lack of differences in plant emergence.

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