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Huanglongbing (HLB) vectored by Asian citrus psyllid (Diaphorina citri) severely affects commercial plantations of Mexican lime (Citrus aurantifolia) in the dry tropic region of Mexico. Management of Huanglongbing is based on intensive use of agronomic practices such as irrigation, nutrition, pruning, and weed, insect pest, and disease control. During 2018 to 2022, the effect of black, white, aluminum, and green plastic mulches, a white polypropylene mesh (ground cover), and bare soil (traditional system), were evaluated on D. citri and incidence-severity (I-S) of Huanglongbing, and Mexican lime yields. Trees with all types of plastic mulch had less I-S during the first 13 months of the study (35 to 40% of affected foliage) compared to bare soil (74% of tree affected). Also, plots with plastic mulches had fewer Asian citrus psyllid adults (one to 16 insects/trap/week) as compared with bare soil (11 to 28 adults). Mulched treatments had a positive effect on fruit production. After 4 years, plots with white, aluminum, green, and black plastic yielded 41.6, 40.1, 39.6, and 34.9 t/ha. Bare soil yielded only 26.6 t/ha. The cost to install plastic mulches was $526/ha. Because of that, the plastics increased yields by 50-56% and the average price of Mexican lime fruit was about $600 per ton. This production system is an economically profitable alternative to the growers to coexist with Huanglongbing in the dry tropics of Mexico. [ABSTRACT FROM AUTHOR]

Copyright of Revista Mexicana de Ciencias Agrícolas is the property of Instituto Nacional de Investigaciones Forestales, Agricolas y Pecuarias and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Mexicana de Ciencias Agrícolas is the property of Instituto Nacional de Investigaciones Forestales, Agricolas y Pecuarias and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

El psílido asiático de los cítricos (PAC; Diaphorina citri) es la plaga más importante que afecta a la lima mexicanao ( Citrus aurantifolia) en el trópico seco de México y es el vector de la enfermedad del Huanglongbing. Su control se basa en el uso de insecticidas sintéticos. La búsqueda de alternativas sustentables y eficaces es una prioridad en el manejo del PAC. En este estudio, se evaluó el efecto de diferentes tipos de aceites y extractos de plantas en el control de ninfas del PAC en el estado de Colima, México. Las pruebas fueron conducidas en árboles de lima mexicana y plantas de vivero infestadas con la plaga. Se realizó una aplicación foliar de cada tratamiento sobre brotes vegetativos de 5 a 7 días de edad. Las evaluaciones del número de ninfas vivas se hicieron antes y después de la aplicación de los aceites y los extractos de plantas. En la primera prueba, el aceite parafínico (99% de residuos no sulfonados) a concentraciones de 1, 2, y 3%, redujeron la población del PAC entre un 77 a 98% en comparación con el testigo sin control. En las otras pruebas, los diferentes aceites (parafínicos, de cocina y de cítricos) mostraron una baja infestación del PAC con relación al testigo. También, los extractos de neem, ajo y cebolla mostraron una reducción significativa de ninfas después de la aplicación. El aceite de semilla de Jatropha curcas tuvo una buena efectividad en el control del insecto. No se observaron signos de fitotoxicidad en los árboles tratados con cualquiera de los aceites durante el invierno, pero si los hubo durante el verano, principalmente con los aceites de cocina. Estos resultados demuestran que los aceites y extractos vegetales pueden ser incluidos en un programa de control del PAC en lima mexicana para reducir el uso de insecticidas sintéticos (organofosforados), los cuales están teniendo problemas de resistencia de D. citri. [ABSTRACT FROM AUTHOR]

Copyright of Revista Chapingo Serie Horticultura is the property of Universidad Autonoma Chapingo and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Agrociencia is the property of Colegio de Postgraduados and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Tamarind, Tamarindus indica L., is an economically important crop in the dry tropical region of Western Mexico. For more than a decade, damage caused by an insect borer in seeds has been observed. Since 2006, taxonomical identification, biology, hosts, and integrated management of the insect have been studied. In this review, current knowledge of the tamarind seed borer is presented. The beetle is 4 to 6 mm long, with a brown-colored body with pubescence, large hind legs, and large serrated antennae. Its elytra do not cover the last abdominal segments. The larvae are 7 to 8 mm long, pinkish-white in color, and slightly mobile. In the Western region of Mexico, tamarind is the main host. The insect oviposits on different legumes; however, only on tamarind (followed by peanut and chickpea) can it complete its life cycle. According to these characteristics, the insect was identified as Caryedon serratus Oliver and affects tamarind pods at pre- and postharvest. Its control should be oriented to damage reduction in the field and storage. The use of insecticides (deltamethrin and paraffinic oil) before harvest is suggested. Also, all the fruits on the tree must be cut during harvest, because this insect is able to complete its life cycle in them. The fumigation of the pods with aluminum phosphide can reduce damage during storage. [ABSTRACT FROM AUTHOR]