{"id":11249,"date":"2026-06-30T10:13:17","date_gmt":"2026-06-30T10:13:17","guid":{"rendered":"https:\/\/agri-research-journal.net\/SjarEn\/?p=11249"},"modified":"2026-06-30T10:13:17","modified_gmt":"2026-06-30T10:13:17","slug":"the-toxic-effect-of-b-thuringiensis-var-kurstaki-on-the-potato-tuber-moth-phthorimaea-operculella-under-laboratory-conditions","status":"publish","type":"post","link":"https:\/\/agri-research-journal.net\/SjarEn\/?p=11249","title":{"rendered":"The Toxic effect of B.thuringiensis var kurstaki on the potato tuber moth Phthorimaea operculella under laboratory conditions"},"content":{"rendered":"<p style=\"text-align: center;\"><span style=\"font-family: 'times new roman', times, serif;\"><strong>Samer Al- Amer*<sup>1<\/sup><\/strong><\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\">1 Syrian Grain company, Deir Ezzor, Syria <\/span><br \/>\n<span style=\"font-family: 'times new roman', times, serif;\">(*Corresponding author: Dr.Samer Al-Amer, E-mail: <a href=\"mailto:sa10.8.1978am@gmail.com\">sa10.8.1978am@gmail.com<\/a>).<\/span><\/p>\n<p style=\"text-align: center;\"><span style=\"font-family: 'times new roman', times, serif;\">Received: 23\/ 11\/ 2025\u00a0 \u00a0 \u00a0Accepted: 22\/ 01\/ 2026<\/span><\/p>\n<p><span style=\"font-family: 'Times New Roman', Times; font-size: 17px;\"><strong>Abstract:\u00a0<\/strong><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-family: 'Times New Roman', Times; font-size: 17px;\">This research was conducted in the Faculty of Agricultural Engineering at Al-Furat University in Deir ez-Zor, Department of Plant Protection, during the 2024, and the purpose of\u00a0 this research is to determine the\u00a0 the possibility of using Bacillus thuringeinsis var kurstaki Bacteria in combating the potato tuber moth(Phthorimaea operculella) under laboratory conditions(Temperature 25\u00ba\u00b11 , photoperiod 12 light:12 darkness , Humidity 70\u00b15). Different concentrations of B.th bacterial suspension (%0.125 ,%0.25 ,% 0.5 , %1) were used to treat potato tubers on which potato tuber moth larvae fed. The percentage of death of F1 individuals of the potato tuber moth in the larval and pupal stages increased with increasing concentration of Bacillus thuringiensis var kurstaki\u00a0 bacteria The 1% concentration was significantly superior to the other concentrations of B.th bacteria in increasing the percentage of death in the larval and pupal stages, as the percentage reached 78.8%. The percentage of deformed insects of the potato tuber moth increased at a concentration of 0.125%, compared to the concentration 0. 25%. and the control treatment. Where the percentage reached 3.83%. It was noted that the average weight of F1 pupae fed on tubers treated with Bacillus thuringiensis var kurstaki bacteria decreased significantly and clearly at the 0.25% concentration of bacteria compared to the concentration 0.125%. and the control treatment.<\/span><\/p>\n<p><span style=\"font-family: 'times new roman', times, serif;\"><strong>Keywords:<\/strong>Bacteria Bacillus .thuringiensis var kurstaki. Potato tuber moth(Phthorimaea operculella). pupal. larva<\/span><\/p>\n<p><strong><span style=\"font-family: 'times new roman', times, serif;\">\u00a0Full paper in Arabic: <a href=\"http:\/\/agri-research-journal.net\/SjarEn\/wp-content\/uploads\/v13n3p17.pdf\">PDF<\/a><\/span><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Samer Al- Amer*1 1 Syrian Grain company, Deir Ezzor, Syria (*Corresponding author: Dr.Samer Al-Amer, E-mail: sa10.8.1978am@gmail.com). Received: 23\/ 11\/ 2025\u00a0 \u00a0 \u00a0Accepted: 22\/ 01\/ 2026 Abstract:\u00a0 This research was conducted in the Faculty of Agricultural Engineering at Al-Furat University in &hellip; <a href=\"https:\/\/agri-research-journal.net\/SjarEn\/?p=11249\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-11249","post","type-post","status-publish","format-standard","hentry","category-sjar"],"_links":{"self":[{"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=\/wp\/v2\/posts\/11249","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=11249"}],"version-history":[{"count":1,"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=\/wp\/v2\/posts\/11249\/revisions"}],"predecessor-version":[{"id":11254,"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=\/wp\/v2\/posts\/11249\/revisions\/11254"}],"wp:attachment":[{"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=11249"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=11249"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/agri-research-journal.net\/SjarEn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=11249"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}