Evaluation of soil organic matter from integrated production systems using laser-induced fluorescence spectroscopy

2021 ◽  
Vol 211 ◽  
pp. 105001
Author(s):  
Amanda M. Tadini ◽  
Alfredo A.P. Xavier ◽  
Débora M.B.P. Milori ◽  
Patrícia P.A. Oliveira ◽  
José R. Pezzopane ◽  
...  
2020 ◽  
Author(s):  
Amanda Maria Tadini ◽  
Alfredo Augusto Pereira Xavier ◽  
Ladislau Martin-Neto ◽  
Débora Marcondes Bastos Pereira Milori ◽  
Alberto Carlos de Campos Bernardi

<p>The Integrated Crop-Livestock-Forest Systems (CLF) have been able to capture and store the carbon (C) in the form of Soil Organic Matter (SOM), in different regions in Brazil, thereby contributing to mitigate agricultural greenhouse gases emission. This is an eligible practice in Low Carbon Emission Agriculture Plan in Brazil, and currently has around 15 million hectares under use, a very positive and important trend in soil land use in Brazil. SOM is considered a relevant indicator of soil quality due to its direct relationship with biological, chemical, and physical properties, allowing it to evaluate the impacts of agricultural management. Laser-based spectroscopies as Laser-Induced Fluorescence Spectroscopy (LIFS) and Laser-Induced Breakdown Spectroscopy (LIBS) have become promising tools in the evaluation of the SOM in agricultural soils. LIBS can measure soil C, and LIFS can infer about the chemical structure of SOM, mainly aromaticity. The standard protocol for measuring soil C changes involves soil sampling at the field and chemical sample preparation for laboratory analysis. Although this procedure produces precise results, it takes time, generates chemical residues, and the costs restrict its routine for large scale use in agricultural projects. Thus, there is a need to develop clean (green chemistry), rapid, precise, and cost-efficient methods for measuring soil C changes in the field. Also, information about the chemical structure of SOM usually is done through spectroscopic techniques, such as <sup>13</sup>C NMR, EPR, and fluorescence of humic acid, which are not applied for large scale measurement and mapping. LIFS can be applied in whole soil and can be used to evaluate the aromaticity of SOM, and consequently, its chemical stability.  The objectives of this study were to evaluatethe soil C stock and SOM Stability of some Brazilian soils under different integrated systems, such as,Crop-Livestock-Forest (CLF), Crop-Livestock (CL) and Livestock-Forest(LF). The results showed the combination of soil carbon accumulation, and an increase of SOM aromaticity for CLF, which can be promising for sustainable intensification in agriculture.</p><p><strong>Keywords: </strong>Sustainable Intensification; Soil Organic Matter; Carbon stock; Laser-Induced Fluorescence Spectroscopy; Integrated Crop-Livestock-Forest Systems</p>


2014 ◽  
Vol 164 ◽  
pp. 74-81 ◽  
Author(s):  
Meiju Liu ◽  
Weiling Liang ◽  
Hang Qu ◽  
Gengyin Zhi ◽  
Qiuxue Chen ◽  
...  

2006 ◽  
Vol 70 (1) ◽  
pp. 57-63 ◽  
Author(s):  
Débora Marcondes Bastos Pereira Milori ◽  
Helder Vinicius Avanço Galeti ◽  
Ladislau Martin-Neto ◽  
Jeferson Dieckow ◽  
Martha González-Pérez ◽  
...  

2016 ◽  
Vol 124 ◽  
pp. 139-148 ◽  
Author(s):  
Olsen Rainness Mouloubou ◽  
Pascale Prudent ◽  
Stéphane Mounier ◽  
Jean-Luc Boudenne ◽  
Madi Guirema Abaker ◽  
...  

Author(s):  
Alper Durak ◽  
Özlem Altuntaş ◽  
İbrahim Kutalmış Kutsal ◽  
Rabia Işık ◽  
Fırat Ege Karaat

Due to its importance for organic agriculture, one of the most important agricultural production systems, various sources have been proposed to increase soil organic matter content. Vermicompost is one of those sources known as the resistant last form of farmyard manure which is degraded by earthworms. Soil organic matter or humus and their compounds are nutrient sources that increase physical, chemical and biological quality of soil. Humus and humus compounds improve soil physical, chemical and biological quality parameters increasing rhizosphere aeration and water holding capacity, rehabilitating soil structure, providing plant nutrients and constituting natural media for microorganisms with their regulative effects on soil reactions. In this study, the effects of vermicompost on yield and some growth parameters of lettuce were investigated. For this purpose, a random block designed experiment with 5 different applications was conducted in 3 replicates. The applications were control, vermicompost applications of 100 kg, 200 kg and 300 kg per decare and conventional fertilization. According to the results obtained, yield and growth parameters were improved by vermicompost application when compared to control and conventional fertilization. As a result of this study, it was concluded that 300 kg vermicompost/da is a promising application in lettuce production for optimal yield and soil improvement.


2011 ◽  
Vol 111 (2) ◽  
pp. 231-235 ◽  
Author(s):  
T. Martins ◽  
S.C. Saab ◽  
D.M.B.P. Milori ◽  
A.M. Brinatti ◽  
J.A. Rosa ◽  
...  

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