@Article{phyton.2023.026513,
AUTHOR = {Muhammad Asad, Rashad Rasool Khan, Ahmed B. Aljuboory, Muhammad Haroon U. Rashid, Uttam Kumar, Inzamam Ul Haq, Aqsa Hafeez, Ahmed Noureldeen, Khadiga Alharbi},
TITLE = {Toxic and Antifeedant Effects of Different Pesticidal Plant Extracts against Beet Armyworm (<i>Spodoptera exigua</i>)},
JOURNAL = {Phyton-International Journal of Experimental Botany},
VOLUME = {92},
YEAR = {2023},
NUMBER = {4},
PAGES = {1161--1172},
URL = {http://www.techscience.com/phyton/v92n4/51248},
ISSN = {1851-5657},
ABSTRACT = {The beet armyworm (BAW), <i>Spodoptera exigua</i> (Lepidoptera: Noctuidae) is a highly destructive pest of vegetables and
field crops. Management of beet armyworm primarily relies on synthetic pesticides, which is threatening the beneficial
community and environment. Most importantly, the BAW developed resistance to synthetic pesticides with making it
difficult to manage. Therefore, alternative and environment-friendly pest management tactics are urgently required.
The use of pesticidal plant extracts provides an effective way for a sustainable pest management program. To evaluate
the use of pesticidal plant extracts against BAW, we selected six plant species (<i>Lantana camara</i>, <i>Aloe vera</i>, <i>Azadirachta
indica</i>, <i>Cymbopogon citratus</i>, <i>Nicotiana tabacum </i>, and <i>Ocimum basilicum</i>) for initial screening experiment. Four out of
six plant species such as<i> A. indica</i>, <i>N. tabacum</i>, <i>C. citratus</i> and <i>O. basilicum</i> showed promising mortality of more than
50%. Therefore, we selected these four plant extracts for the subsequent experiments. Through contact bioassay, <i>A.
indica</i> showed high mortality 66.63%, followed by the <i>N. tabacum</i> 53.33%, at 10% w/v concentration. Similarly, <i>N.
tabacum</i> showed the highest mortality rate, 66% at 10% w/v concentration, followed by the<i> A. indica </i>46% through
feeding bioassay. Furthermore, the feeding deterrence assay showed that <i>C. citratus</i> had a high antifeedant index
(−50) followed by <i>A. indica</i> (−39), and <i>N. tabacum</i> (−28). In living plant assay, the <i>N. tabacum</i> extract showed a
low mean damage score 3.6 on living cotton plant followed by <i>C. citratus</i> 4.5 and <i>A. indica </i>5.5. Hence, extracts of
three plant species provided promising results against the BAW, which can minimize the use of synthetic chemicals,
particularly for small landholding farmers. Further studies are also required to evaluate the effects of these plant extract
against BAW on cotton plants under field conditions to optimize the further use.},
DOI = {10.32604/phyton.2023.026513}
}