{"id":518,"date":"2022-04-06T09:15:11","date_gmt":"2022-04-06T09:15:11","guid":{"rendered":"https:\/\/forum.sbenny.com\/blog\/gardening\/trees\/other-trees\/the-borer-or-margaronia-of-the-olive-tree-damage-and-biological-defense\/"},"modified":"2022-04-06T09:15:11","modified_gmt":"2022-04-06T09:15:11","slug":"the-borer-or-margaronia-of-the-olive-tree-damage-and-biological-defense","status":"publish","type":"post","link":"https:\/\/forum.sbenny.com\/blog\/gardening\/trees\/other-trees\/the-borer-or-margaronia-of-the-olive-tree-damage-and-biological-defense\/","title":{"rendered":"The borer or margaronia of the olive tree.  Damage and biological defense"},"content":{"rendered":"<p> <br \/>\n<\/p>\n<div id=\"penci-post-entry-inner\">\n<p>There <strong>olive tree borer<\/strong> is also known as <strong>margaronia<\/strong>.  His scientific names are two, that is <em><strong>Palpita vitrealis<\/strong><\/em>  And <em><strong>Palpita unionalis<\/strong><\/em>.<span id=\"more-16585\"><\/span>  It is a very common parasite in Italian olive growing areas.  Its presence is of concern, as it can damage both the vegetation of the <u>olive trees<\/u> than the drupes, or olives.  The insect, even if it has nocturnal habits, is easy to recognize in the adult stage, since the butterfly has a very particular appearance.  The damage, however, is not done by the butterfly, but mostly by the larvae in their various stages of growth.<\/p>\n<p>In this article we get to know this parasite of the olive tree better, we study its biological cycle and we understand how to intervene to eliminate it from the olive grove.<span id=\"ezoic-pub-ad-placeholder-657\" class=\"ezoic-adpicker-ad\"><\/span><span class=\"ezoic-ad box-3 box-3657 adtester-container adtester-container-657\" data-ez-name=\"coltivazionebiologica_it-box-3\"><span id=\"div-gpt-ad-coltivazionebiologica_it-box-3-0\" ezaw=\"728\" ezah=\"90\" style=\"position:relative;z-index:0;display:inline-block;padding:0;min-height:90px;min-width:728px\" class=\"ezoic-ad\"><\/span><\/span><\/p><div id=\"forum-3844533284\" class=\"forum-content-2 forum-entity-placement\">\t\t<div class=\"ad-wrapper\" style=\"width:100%;min-height:250px;text-align:center\">\r\n\t\t\t<!-- In Article Blog -->\r\n\t\t\t<ins class=\"adsbygoogle\"\r\n\t\t\t\t style=\"display:block; text-align:center;\"\r\n\t\t\t\t data-ad-layout=\"in-article\"\r\n\t\t\t\t data-ad-format=\"fluid\"\r\n\t\t\t\t data-ad-client=\"ca-pub-3476569516614521\"\r\n\t\t\t\t data-ad-slot=\"9829044906\"><\/ins>\r\n\t\t\t<script>\r\n\t\t\t\t (adsbygoogle = window.adsbygoogle || []).push({});\r\n\t\t\t<\/script>\r\n\t\t<\/div><\/div>\n<h2><span id=\"Identificazione_della_Palpita_vitrealis_Palpita_unionalis\">Identification of the Palpita vitrealis (Palpita unionalis)<\/span><\/h2>\n<p>The olive tree borer is indicated with the entomological nomenclature of <em>Palpita vitrealis<\/em> (Rossi) or with the synonym of <em>Palpita unionalis<\/em> (Hubner).<br \/>It is an insect of the order of <em>Lepidoptera<\/em>family <em>Crambidae<\/em>subfamily <em>Spilomelinae<\/em>.  Sometimes, it is called <strong>green olive moth<\/strong>but it is a wrong name and risks confusing margaronia with <u>olive moth (<em>Prays Oleae<\/em>)<\/u>.<\/p>\n<h2><span id=\"Aspetto_della_margaronia_dellolivo_adulta\">Appearance of the adult olive margaronia<\/span><\/h2>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"ezlazyload aligncenter size-full wp-image-16589\" alt=\"Palpita vitrealis\" width=\"780\" height=\"529\" ezimgfmt=\"rs rscb3 src ng ngcb3\" src=\"https:\/\/forum.sbenny.com\/blog\/wp-content\/uploads\/2022\/04\/The-borer-or-margaronia-of-the-olive-tree-Damage-and.jpg\"><br \/>The adult butterfly of the olive borer has a characteristic slender shape, with a wingspan of 2.5 to 3 cm.  Its appearance is somewhat reminiscent of the Anglo-French Concorde aircraft.  The wings are white, transparent and bright, with pearly reflections.  They have a hazel-colored front margin.  Male specimens are distinguished from females by the presence of a tuft of elongated scales at the point where the abdomen ends.<span id=\"ezoic-pub-ad-placeholder-652\" class=\"ezoic-adpicker-ad\"><\/span><span class=\"ezoic-ad medrectangle-3 medrectangle-3652 adtester-container adtester-container-652\" data-ez-name=\"coltivazionebiologica_it-medrectangle-3\"><span id=\"div-gpt-ad-coltivazionebiologica_it-medrectangle-3-0\" ezaw=\"728\" ezah=\"90\" style=\"position:relative;z-index:0;display:inline-block;padding:0;min-height:90px;min-width:728px\" class=\"ezoic-ad\"><\/span><\/span><\/p><div id=\"forum-1888534347\" class=\"forum-content forum-entity-placement\">\t\t<div class=\"ad-wrapper\" style=\"width:100%;min-height:250px;text-align:center\">\r\n\t\t\t<!-- In Article Blog -->\r\n\t\t\t<ins class=\"adsbygoogle\"\r\n\t\t\t\t style=\"display:block; text-align:center;\"\r\n\t\t\t\t data-ad-layout=\"in-article\"\r\n\t\t\t\t data-ad-format=\"fluid\"\r\n\t\t\t\t data-ad-client=\"ca-pub-3476569516614521\"\r\n\t\t\t\t data-ad-slot=\"9829044906\"><\/ins>\r\n\t\t\t<script>\r\n\t\t\t\t (adsbygoogle = window.adsbygoogle || []).push({});\r\n\t\t\t<\/script>\r\n\t\t<\/div><\/div>\n<h2><span id=\"Aspetto_della_larva_di_margaronia_dellolivo\">Appearance of the olive margaronia larva<\/span><\/h2>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"ezlazyload aligncenter size-full wp-image-16587\" alt=\"Larva of margaronia\" width=\"780\" height=\"477\" ezimgfmt=\"rs rscb3 src ng ngcb3\" src=\"https:\/\/forum.sbenny.com\/blog\/wp-content\/uploads\/2022\/04\/1649236511_447_The-borer-or-margaronia-of-the-olive-tree-Damage-and.jpg\"><br \/>Olive margaronia larvae go through six stages of development.  As soon as they are born they are slightly larger than the egg that contained them.  The color is yellowish, with a body provided with bristles, located on black tubercles.<br \/>When mature, they have a small head, with the rest of the body gradually swollen to the center and then narrowed again to the caudal end.  The color is bright green, with a yellowish head.  When fully developed, they measure about 2 cm in length.  Later, when it is about to transform itself into a chrysalis, it shortens and swells, turning towards brown.<\/p>\n<h2><span id=\"Piante_colpite_dalla_margaronia\">Plants affected by margaronia<\/span><\/h2>\n<p>There <em>Palpita vitrealis<\/em> it does not live only against the olive trees.  Other host plants, typical of our Mediterranean scrub, are: olive, <u>strawberry tree<\/u>, <u>privet<\/u>, <u>mastic<\/u>jasmine, ash, <u>tree heather<\/u>.<\/p><div id=\"forum-1035648926\" class=\"forum-content-3 forum-entity-placement\">\t\t<div class=\"ad-wrapper\" style=\"width:100%;min-height:250px;text-align:center\">\r\n\t\t\t<!-- In Article Blog -->\r\n\t\t\t<ins class=\"adsbygoogle\"\r\n\t\t\t\t style=\"display:block; text-align:center;\"\r\n\t\t\t\t data-ad-layout=\"in-article\"\r\n\t\t\t\t data-ad-format=\"fluid\"\r\n\t\t\t\t data-ad-client=\"ca-pub-3476569516614521\"\r\n\t\t\t\t data-ad-slot=\"9829044906\"><\/ins>\r\n\t\t\t<script>\r\n\t\t\t\t (adsbygoogle = window.adsbygoogle || []).push({});\r\n\t\t\t<\/script>\r\n\t\t<\/div><\/div>\n<h2><span id=\"Danni_della_piralide_sullolivo\">Damage of the borer on the olive tree<\/span><\/h2>\n<p><img decoding=\"async\" loading=\"lazy\" class=\"ezlazyload aligncenter size-full wp-image-16588\" alt=\"The damage of margaronia on the olive tree\" width=\"780\" height=\"472\" ezimgfmt=\"rs rscb3 src ng ngcb3\" src=\"https:\/\/forum.sbenny.com\/blog\/wp-content\/uploads\/2022\/04\/1649236511_42_The-borer-or-margaronia-of-the-olive-tree-Damage-and.jpg\"><br \/>On the olive tree the damage of the borer is more significant, as it can be damaged both the vegetation and the <u>ripening olives<\/u>.  The damage is done by the larvae at different age stages.  These practice erosions on the leaves, concentrating on the new apical shoots, especially those of suckers and suckers.<br \/>The fourth age larvae can erode the drupe, sometimes even exposing the core.<\/p>\n<h2><span id=\"Ciclo_di_vita_della_piralide_dellolivo\">Life cycle of the olive tree borer<\/span><\/h2>\n<p>The margaronia hibernates at the larva stage and in our latitudes it can make up to 5 generations in a year (Central and Southern Italy).  The first flight of adults occurs in early spring, with butterflies mating at night.<span id=\"ezoic-pub-ad-placeholder-658\" class=\"ezoic-adpicker-ad\"><\/span><span class=\"ezoic-ad medrectangle-4 medrectangle-4658 adtester-container adtester-container-658\" data-ez-name=\"coltivazionebiologica_it-medrectangle-4\"><span id=\"div-gpt-ad-coltivazionebiologica_it-medrectangle-4-0\" ezaw=\"580\" ezah=\"400\" style=\"position:relative;z-index:0;display:inline-block;padding:0;width:100%;max-width:1200px;margin-left:auto!important;margin-right:auto!important;min-height:90px;min-width:728px\" class=\"ezoic-ad\"><\/span><\/span><\/p>\n<h3><span id=\"Le_uova\">The eggs<\/span><\/h3>\n<p>Each female can lay a very variable number of eggs (from 86 to 1200).  These are laid in small groups, on both leaf pages and following the median rib of the <u>olive leaf<\/u>.  Depending on the temperatures, we will have an incubation time of 3 to 30 days, which is why the stages of development and the different generations often overlap.<\/p>\n<h3><span id=\"Le_larve\">The larvae<\/span><\/h3>\n<p>The larvae live in groups on the leaves, building shelters of silky threads and feeding on the most tender apicals.  As they grow, they separate, living isolated in the vegetation and continuing to erode the leaf blade.<br \/>The sixth-age larva gathers 2-3 leaves, between which it weaves a silky white cocoon within which it incrisalida.  The transformation into a butterfly takes place at different times, depending on the temperatures.<\/p>\n<h2><span id=\"Come_difendere_gli_alberi_dalla_margaronia\">How to defend trees from margaronia<\/span><\/h2>\n<p>To protect olive trees from margaronia, it is first of all necessary to ensure a high level of biodiversity in the<u>olive grove<\/u>.  The moth has several natural enemies, especially among <u>calcidoid hymenoptera<\/u> And <u>parasitoid diptera<\/u>.<br \/>Even pruning and balanced fertilization, by limiting the vigor of new shoots, avoid large infestations.  Much attention must be paid to the periodic cleaning of the suckers, as these are among the preferred stems of the borer.<span id=\"ezoic-pub-ad-placeholder-650\" class=\"ezoic-adpicker-ad\"><\/span><span class=\"ezoic-ad box-4 box-4650 adtester-container adtester-container-650\" data-ez-name=\"coltivazionebiologica_it-box-4\"><span id=\"div-gpt-ad-coltivazionebiologica_it-box-4-0\" ezaw=\"300\" ezah=\"250\" style=\"position:relative;z-index:0;display:inline-block;padding:0;min-height:250px;min-width:300px\" class=\"ezoic-ad\"><\/span><\/span><\/p>\n<h2><span id=\"Come_eliminare_le_larve_di_margaronia\">How to get rid of margaronia larvae<\/span><\/h2>\n<p>Among the various <u>biological remedies against parasites<\/u>the most effective against the olive borer is the <u>bacillus thuringiensis var.  kurstarki<\/u>.  The young larvae are those on which the product is most effective, therefore, a good time to do the treatment is summer, when different larval stages overlap.  The wetting of the vegetation must be uniform and abundant, done in the evening hours of the day.  Bacillus thuringiensis acts by ingestion, so it is necessary for the larva to eat wet leaves.  In organic olive growing it is also used for <u>olive moth<\/u> and you can <u>buy here<\/u>without the need for the <u>license required for the purchase of plant protection products<\/u>.<\/p>\n<p><span id=\"ezoic-pub-ad-placeholder-689\" class=\"ezoic-adpicker-ad\"><\/span><span class=\"ezoic-ad large-mobile-banner-1 large-mobile-banner-1689 adtester-container adtester-container-689\" data-ez-name=\"coltivazionebiologica_it-large-mobile-banner-1\"><span id=\"div-gpt-ad-coltivazionebiologica_it-large-mobile-banner-1-0\" ezaw=\"580\" ezah=\"400\" style=\"position:relative;z-index:0;display:inline-block;padding:0;width:100%;max-width:1200px;margin-left:auto!important;margin-right:auto!important;min-height:90px;min-width:728px\" class=\"ezoic-ad\"><\/span><\/span><\/div>\n\n","protected":false},"excerpt":{"rendered":"<p>There olive tree borer is also known as margaronia. His scientific names are two, that is Palpita vitrealis And Palpita unionalis. It is a very common parasite in Italian olive growing areas. Its presence is of concern, as it can damage both the vegetation of the olive trees than the drupes, or olives. The insect, [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":519,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[70],"tags":[68,71,72],"class_list":["post-518","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-other-trees","tag-italian-garden","tag-olive-grove","tag-other-trees","entry","has-media"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>The borer or margaronia of the olive tree. Damage and biological defense - Sbenny\u2019s Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/forum.sbenny.com\/blog\/gardening\/trees\/other-trees\/the-borer-or-margaronia-of-the-olive-tree-damage-and-biological-defense\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"The borer or margaronia of the olive tree. Damage and biological defense - Sbenny\u2019s Blog\" \/>\n<meta property=\"og:description\" content=\"There olive tree borer is also known as margaronia. His scientific names are two, that is Palpita vitrealis And Palpita unionalis. It is a very common parasite in Italian olive growing areas. Its presence is of concern, as it can damage both the vegetation of the olive trees than the drupes, or olives. 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Damage and biological defense - Sbenny\u2019s Blog","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/forum.sbenny.com\/blog\/gardening\/trees\/other-trees\/the-borer-or-margaronia-of-the-olive-tree-damage-and-biological-defense\/","og_locale":"en_US","og_type":"article","og_title":"The borer or margaronia of the olive tree. Damage and biological defense - Sbenny\u2019s Blog","og_description":"There olive tree borer is also known as margaronia. His scientific names are two, that is Palpita vitrealis And Palpita unionalis. It is a very common parasite in Italian olive growing areas. Its presence is of concern, as it can damage both the vegetation of the olive trees than the drupes, or olives. 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