{"id":775,"date":"2016-06-27T19:40:57","date_gmt":"2016-06-27T19:40:57","guid":{"rendered":"http:\/\/elpicudonegro.com\/web\/?p=775"},"modified":"2016-06-28T18:11:05","modified_gmt":"2016-06-28T18:11:05","slug":"sintomas-pitas-afectadas","status":"publish","type":"post","link":"https:\/\/elpicudonegro.com\/web\/2016\/06\/27\/sintomas-pitas-afectadas\/","title":{"rendered":"S\u00edntomas de pitas afectadas por picudo negro"},"content":{"rendered":"

Cuando una PITA es atacada por picudo negro<\/strong>, antes de estar muerta, vamos a encontrar algunas se\u00f1ales o s\u00edntomas para localizar el ataque. Lo m\u00e1s notorio es que desde el centro del cogollo hacia afuera se aprecia un cambio de color, producto de la pudrici\u00f3n interna, que pasa del verde azulado al gris viol\u00e1ceo – rosado.<\/span> Si nos acercamos percibiremos adem\u00e1s un olor f\u00e9tido.<\/p>\n

Es distinguible desde la distancia y nos permite conocer que plantas est\u00e1n irreversiblemente afectadas. Adem\u00e1s esas son las pitas donde podemos encontrar el \u00abbicho\u00bb en todas sus fases o etapas, antes que los adultos comiencen a moverse hacia otro huesped. Este hecho nos da pistas de los momentos oportunos<\/strong> para tomar medidas de control.<\/p>\n

\"Pita
Pita con s\u00edntomas evidentes de pudrici\u00f3n y \u00abcuello de ganso\u00bb<\/figcaption><\/figure>\n

Diferentes trabajos de investigaci\u00f3n muestran la relaci\u00f3n que guardan bacterias fitopat\u00f3genas de distintos g\u00e9neros con insectos plagas de plantas. Adem\u00e1s de otros agentes como hongos y levaduras.<\/p>\n

En concreto en los AGAVES, la presencia de la bacteria Erwinia sp<\/strong>. se asocia a la presencia del picudo del agave (Scyphophorus acupunctatus Gyll<\/em>).<\/p>\n

\"comienza
Putrefaccion inicial provocada posiblemente por Erwinia sp.<\/figcaption><\/figure>\n

Los resultados de distintos estudios indican que plantas de agave con s\u00edntomas de pudrici\u00f3n del cogollo, cabeza y hojas, est\u00e1n asociadas con la presencia de Erwinia carotovora<\/em> (Granados, 1993; Valenzuela-Zapata, 1997; V\u00e9lez-Guti\u00e9rrez, 1997; Monroy-S\u00e1nchez, 1999, Virgen-Calleros et al., 2000; Cervantes-Mart\u00ednez et al., 2002). Y tambi\u00e9n Jim\u00e9nez-Hidalgo et al. (2005) identificaron a Erwinia cacticida<\/em> como el agente causal de la pudrici\u00f3n en agave.<\/p>\n

Otro s\u00edntoma frecuente de la presencia del insecto, es el llamado cuello de ganso, que consiste en una inclinaci\u00f3n excesiva del cogollo hacia un lado, esto se debe a que la larva del picudo, al alimentarse va formando galer\u00edas que afectan un lado de la planta por la parte interna, y el crecimiento de ese lado se hace m\u00e1s lento o se detiene definitivamente, mientras el lado opuesto contin\u00faa creciendo de manera normal, causando la inclinaci\u00f3n del cogollo por el crecimiento hacia un solo lado.<\/p>\n

El resultado final es sobra conocido… SEGUIMOS TRABAJANDO EN EL ESTUDIO DE LA BIOLOG\u00cdA DEL INSECTO E IMPLEMENTANDO DIFERENTES M\u00c9TODOS DE CONTROL.<\/p>\n

GRACIAS<\/p>\n

\n","protected":false},"excerpt":{"rendered":"

Cuando una PITA es atacada por picudo negro, antes de estar muerta, vamos a encontrar algunas se\u00f1ales o s\u00edntomas para localizar el ataque. Lo m\u00e1s notorio es que desde el centro del cogollo hacia afuera se aprecia un cambio de color, producto de la pudrici\u00f3n interna, que pasa del verde azulado al gris viol\u00e1ceo – … Seguir leyendo S\u00edntomas de pitas afectadas por picudo negro<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[4],"tags":[14],"class_list":["post-775","post","type-post","status-publish","format-standard","hentry","category-tratamientos-lucha-contra-el-picudo-negro","tag-tratamientos-picudo-negro"],"yoast_head":"\nS\u00edntomas de pitas afectadas por picudo negro<\/title>\n<meta name=\"description\" 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