## 2 Results
### Soil Chemical Composition
\begin{table}
\begin{tabular}{c c c c c c c} \hline \hline \(\mathbf{N}^{\circ}\) & **Component 1** & **LRI 2** & **LRI 3** & **Soil 4** & **Soil 5** & **Soil 6** & **Soil 7** \\ \hline
1 & \(\alpha\)-thujene & 821 & 823 & 4.2 \(\pm\) 0.02 & 0.1 \(\pm\) 0.02 & 4.0 \(\pm\) 0.03 & 3.7 \(\pm\) 0.03 \\
2 & \(\alpha\)-pinene & 942 & 943 & 19.0 \(\pm\) 0.05 & 0.4 \(\pm\) 0.02 & 20.4 \(\pm\) 0.02 & 1.2 \(\pm\) 0.02 \\
3 & Sabinene & 976 & 972 & 2.5 \(\pm\) 0.02 & - & 3.2 \(\pm\) 0.02 & 3.2 \(\pm\) 0.02 \\
4 & \(\alpha\)-terpinene & 1012 & 1010 & 5.1 \(\pm\) 0.02 & 0.3 \(\pm\) 0.02 & 4.5 \(\pm\) 0.02 & 6.0 \(\pm\) 0.06 \\
5 & \(p\)-cymene & 1020 & 1016 & 9.0 \(\pm\) 0.02 & 0.6 \(\pm\) 0.03 & 4.8 \(\pm\) 0.04 & 6.5 \(\pm\) 0.03 \\
6 & Limonene & 1026 & 1023 & 4.9 \(\pm\) 0.02 & 0.3 \(\pm\) 0.02 & 2.9 \(\pm\) 0.02 & 4.6 \(\pm\) 0.02 \\
7 & \(\gamma\)-terpinene & 1053 & 1054 & 6.3 \(\pm\) 0.02 & 0.3 \(\pm\) 0.04 & 6.5 \(\pm\) 0.02 & 7.8 \(\pm\) 0.02 \\
8 & Terpinolene & 1082 & 1080 & 2.2 \(\pm\) 0.02 & 1.0 \(\pm\) 0.06 & - & - \\
9 & \(\alpha\)-cubebene & 1352 & 1348 & - & 2.3 \(\pm\) 0.02 & 0.5 \(\pm\) 0.03 & 2.1 \(\pm\) 0.01 \\
10 & Copaene & 1390 & 1385 & 0.3 \(\pm\) 0.02 & 2.8 \(\pm\) 0.02 & 0.9 \(\pm\) 0.02 & 3.2 \(\pm\) 0.02 \\
11 & \(\beta\)-elemene & 1408 & 1406 & 9.7 \(\pm\) 0.02 & 12.9 \(\pm\) 0.02 & 7.1 \(\pm\) 0.02 & 13.7 \(\pm\) 0.02 \\
12 & \(\beta\)-cavophyllene & 1427 & 1424 & 1.6 \(\pm\) 0.02 & 4.2 \(\pm\) 0.03 & 2.1 \(\pm\) 0.02 & 4.4 \(\pm\) 0.01 \\
13 & cis-thujopsene & 1438 & 1435 & 30.2 \(\pm\) 0.02 & 26.7 \(\pm\) 0.04 & 40.5 \(\pm\) 0.03 & 32.2 \(\pm\) 0.02 \\
14 & Humulene & 1471 & 1465 & 1.5 \(\pm\) 0.02 & 2.1 \(\pm\) 0.02 & 1.0 \(\pm\) 0.05 & 3.0 \(\pm\) 0.02 \\
15 & \(\gamma\)-muurolene & 1490 & 1486 & - & 4.9 \(\pm\) 0.04 & - & - \\
17 & \(\alpha\)-muurolene & 1507 & * & - & 1.9 \(\pm\) 0.04 & - & - \\
16 & \(\delta\)-cadinene & 1533 & 1530 & 0.6 \(\pm\) 0.04 & 10.6 \(\pm\) 0.02 & 0.3 \(\pm\) 0.02 & 2.6 \(\pm\) 0.01 \\
18 & \(\tau\)-muurolol & 1641 & 1639 & - & 0.9 \(\pm\) 0.02 & - & - \\
19 & \(\alpha\)-cadinol & 1678 & 1676 & 2.9 \(\pm\) 0.02 & 27.7 \(\pm\) 0.04 & 1.2 \(\pm\) 0.02 & 5.6 \(\pm\) 0.02 \\ \hline  & SUM & & 100.0 & 100.0 & 99.9 & 99.8 \\  & Terpenoids & & 53.2 & 3.0 & 46.3 & 33.0 \\  & Sesquiterpenoids & & 46.5 & 94.2 & 52.7 & 63.6 \\  & Others & & 0.3 & 2.8 & 0.9 & 3.2 \\ \hline \hline \end{tabular}  
* The components are reported according to their elution order on apolar column 2 Linear Retention indices measured on apolar column; 3 Linear Retention indices from literature;
* Not detected.  
\end{table} 
Table 2: Chemical composition (percentage mean values \(\pm\) standard deviation) of soil samples with _L. multiform_ and _S. alba_ seeds in non-direct contact with _J. communis_ EO. (Tables 4 and 5). \(\alpha\)-Thujene was the main volatile for the soils treated with _J. communis_ EO, regardless of the type of seed species. In particular, it was the only one for the sample with _S. alba_ seeds subjected to the action of 5 \(\mu\)L of _L. decidua_ EO (Table 4). In contrast, \(\alpha\)-pinene (\(\geq\)81.8%) characterized the chemical composition of the volatile emission of the soils in direct contact with _L. decidua_ EO (Table 5).