**8. Conclusion**

In this chapter, we presented a detail overview about roles of terpenoids in essential oils as a natural weed killer on a wide range of weed species according to the latest investigations conducted in the current decade. Terpenoids can be useful to control weeds which should be considered as a new approach agricultural sustainable to reduce weed losses and keeping the environment safe from the risks of synthetic herbicides. The current review also turns out that monoterpenoids showed the highest phytotoxicity in comparison to the sesquiterpenoids when these types considered the dominant compounds found in essential oils.

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**Author details**

Ahmed Abdulwahid Ali Almarie

ag.ahmed.abdalwahed@uoanbar.edu.iq

provided the original work is properly cited.

College of Agriculture, University of Anbar, Anbar, Iraq

\*Address all correspondence to: ahmedalmaree@yahoo.com;

© 2020 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium,

*Roles of Terpenoids in Essential Oils and Its Potential as Natural Weed Killers: Recent…*

*DOI: http://dx.doi.org/10.5772/intechopen.91322*

*Roles of Terpenoids in Essential Oils and Its Potential as Natural Weed Killers: Recent… DOI: http://dx.doi.org/10.5772/intechopen.91322*
