Four methods for propagation of Granulovirus phthorimaea on Phthorimaea operculella (Zeller) larvae were evaluated under laboratory conditions. The were: immersion potato, Solanum tuberosum L., tuber; application by cotton swab to larvae; larval and aspersion with viral suspension (homogenized water one 15 infected larvae). objectives develop a method adapted in vivo production the virus determine susceptibility P. virus. Larval was significant at 5, 10, days after evaluation, killing 55.0,...

The use of nanoparticles (NPs) has generated an alternative pest control. objective was to evaluate the insecticidal effect zinc oxide (ZnO NPs), titanium dioxide (TiO2 and their combination on Bactericera cockerelli (Hemiptera: Triozidae) second-stage nymphs under laboratory greenhouse conditions in tomato. research carried out with leaf immersion bioassay method a complete randomized design, by direct plant spraying block design; both designs, control without NPs added. Mortality recorded...

Abstract Antifungal activity of zinc oxide (ZnO) and ZnO nanoparticles (ZnO NPs) was evaluated on the control Fusarium oxysporum Schltdl. (Nectriaceae) under laboratory greenhouse conditions. In vitro evaluation, poisoned culture media prepared, an explant placed in centre solid medium. The experimental design completely randomized with 18 treatments. Mycelial growth conidia concentration were evaluated. Subsequently, three treatments (3,000, 1,500, 100 ppm) NPs chosen for their evaluation...

The fall armyworm, Spodoptera frugiperda Smith & Abbot (Lepidoptera: Noctuidae), is a key pest of corn, Zea mays L. (Poales: Poaceae), in Mexico. development genetically modified (GM) corn hybrids for resistance to this insect, with the inclusion several genes coding proteins Cry1Ab, Vip3Aa20, and mCry3A Bacillus thuringiensis Berliner (Bacillales: Bacillaceae) (Bt), offer an alternative conventional insecticides control pest. Resistance armyworms GM Agrisure 3000 GT, Viptera 3110, 3111 was...

Se han generado acaricidas específicos para controlar T. urticae. Sin embargo, aspectos fisiológicos de este ácaro llevado a desarrollar resistencia contra estos pesticidas, uno los mecanismos involucrados, es la detoxificación mediante enzimas. En esta investigación, análisis bioquímicos se cuantificaron niveles enzimas detoxificadoras que pudieran conferir resistencia, en tres poblaciones urticae, provenientes zona productora rosas del sur Estado México. A cada población le realizaron...

The objective of this study was to determine the oxidative stress and physiological antioxidant responses coriander plants (Coriandrum sativum) grown for 58 days in soil with zinc oxide nanoparticles (ZnO NPs) sulfate (ZnSO4) at concentrations 0, 100, 200, 300, 400 mg Zn/kg soil. results revealed that all Zn compounds increased total chlorophyll content (CHLt) by least 45%, compared control group; however, mg/kg ZnSO4, accumulation decreased 34.6%. determination induction-plasma-coupled...

Diaphorina citri Kuwayama (Hemiptera: Liviidae) is a vector of Liberibacter asiaticus Jagoueix et al. and americanus Teixeira al., causal agents the critical yellow dragon disease or Huanglongbing (HLB), which affects citrus production worldwide. Recently, green synthetic nanoparticles have emerged as potential alternative to control agricultural insect pests. The insecticide effect silver (AgNPs) on 2nd instar nymphs D. under laboratory greenhouse conditions was evaluated. Mortality...

Tomato brown rugose fruit virus (ToBRFV) is considered an emerging disease and a viral pandemic for tomato consumers. The objectives of this research were to analyze the biological physicochemical characteristics ToBRFV in tobacco plants, as well evaluate its natural host range. Inoculant seeds recovered from ToBRFV-infected samples Coahuila, Mexico, confirmed by RT-PCR. In first greenhouse experiment, plants F1 hybrid variety 172–300 (Yüksel), infected with ToBRFV, used inclusions (VI),...

Se analizaron muestras de suelo y raíces del cultivo pepino. extrajeron e identificaron los nematodos fitopatógenos presentes. Juveniles Meloidogyne incognita fueron más abundantes en suelo, otros como Aphelenchoides sp., Pratylenchus Tylenchorynchus Aphelenchus sp. se encontraron con menor presencia. De las obtuvieron hembras huevos M. incognita. Con el fin encontrar alternativas a productos químicos fumigantes utilizados exceso, evaluaron rizobacterias Bacillus vallismortis, velezensis...

The quality of the host plant affects life history parameters tetranychid mites. biology and fertility tables Tetranychus merganser on five plants (Carica papaya, Phaseolus vulgaris, Capsicum annuum var. glabriusculum, Helietta parvifolia, Rosa hybrida) were assessed under laboratory conditions at 28 ± 1 °C 70-80% relative humidity (RH) with a photoperiod 12:12 h (L:D). development period immature females differed among tested ranged from 9.32 days P. vulgaris to 11.34 H. parvifolia. For...

One of the important domestic insects that transmit many pathogens to environment is Periplaneta Americana . The control methods this insect are often ineffective and have caused resistance in these insects. purpose present study was investigate effects contact feeding lethality titanium nanoparticles on In study, different concentrations were prepared for oral treatments P

Los cambios cardiovasculares del embarazo conllevan mayor riesgo en cardiópatas. El objetivo fue analizar los efectos adversos cardiovasculares, obstétricos y perinatales asociados a cardiopatía congénita adquirida durante el puerperio. Estudio transversal retrospectivo, que incluyó registro de 2017-2023 pacientes embarazadas o puérperas hospitalizadas con diagnóstico adquirida. Se compararon eventos (insuficiencia cardiaca, evento vascular cerebral, edema agudo pulmonar, muerte materna,...

Abstract Avocado brown mite, Oligonychus punicae (Hirst) (Acari: Tetranychidae), causes significant damage to crops, such as avocado ( Persea americana Mill. [Lauraceae]). To implement strategies for integrated management of O. , it is necessary understand its biology when feeds on different hosts. Life tables three host plants P. cv. Hass, Pithecellobium dulce (Roxb.) Benth [Fabaceae] and Rosa hybrida L. [Rosaceae]) were developed under laboratory conditions. The developmental time immature...

Helicoverpa zea (Boddie) (Lepidoptera: Noctuidae), the corn earworm, is a key pest causing damage to Zea mays L. (Poales: Poaceae). The development of hybrids expressing Cry1Ab, Vip3Aa20, and mCry3A protein Bacillus thuringiensis Berliner (Bt) (Bacillales: Bacillaceae) an option control this insect. Corn Agrisure™ 3000 GT, Agrisure® Viptera™ 3110, 3111 were tested for earworm suppression in agricultural region Sinaloa during 2011, 2012, 2013 autumn—winter growing seasons, compared with their...

The Tetranychidae family includes mites causing severe damage to agricultural fields. red spider mite,

<p><strong>Background.</strong> Fall Armyworm (FAW) is one of the most damaging agricultural pests found in Western Hemisphere, and it now key on several crops America, Africa, Oceania, Asia; becoming a major threat to food safety many countries, due losses caused farmers.<strong> Objective.</strong> Review current knowledge FAW resistance active ingredients world. <strong>Methodology. </strong>A systematic study was carried out by collecting...

Se evaluó el nivel de daño ocasionado por gusano cogollero, Spodoptera frugiperda (J.E. Smith), bajo condiciones campo en tres híbridos maíz genéticamente modificado (GM) y un híbrido convencional como testigo, todos con sin aplicación insecticidas. Las variedades GM Agrisure 3110® que expresa las proteínas Bacillus thuringiensis Cry1Ab Vip3Aa20, Viptera 3111® Cry1Ab, mCry3A, mostraron alto resistencia valores la Escala Davis igual a 1 control insecticida. 3000 GT® mCry3A tuvo foliar 2.3 3.3...

Magnolia tamaulipana powder extract inhibited egg laying and food intake of adult female Tetranychus urticae. These effects increased according to concentration, being highly effective between 500 1000 µg/mL. Thus, this shows promise as a control agent for spider mites.

Tetranychidae family is a major group of mites causing serious damage in agricultural, vegetable and ornamental crops. Avocado bronze mite (ABM),

Red spider mites, Tetranychus merganser Boudreaux (Acari: Tetranychidae), is an agricultural pest that causes economic losses in papaya and nopal crops Mexico. The aim of this research was to assess antibiosis antixenosis as resistance mechanisms seven host plants (Thevetia ahouai, Carica papaya, Phaseolus vulgaris, Moringa oleifera, Pittosporum tobira, Helietta parvifolia, Capsicum annuum var. glabriusculum) red mites. Antixenosis evaluated by non-preference for oviposition feeding,...

At least 59 maize races (Zea mays L.) have been registered in Mexico. The feeding damage caused by insects and mites to crops generates up ~30% of yield losses. Spider-mite-resistant plants are needed. red spider mite, Tetranychus merganser Boudreaux (Acari: Tetranychidae), is distributed the United States, China, Mexico, Thailand. It considered a potential pest Mexican agriculture. aim this study was evaluate resistance mechanisms (antixenosis antibiosis) 11 native populations,...

En el presente estudio se reporta la incidencia del gusano de semilla maíz, o mosca frijol, Delia platura (Meigen) (Diptera: Anthomyiidae), como plaga primaria en plantaciones. Las larvas alimentan los bulbos y parte basal las hojas. Se encontraron incidencias 5 al 52% plantas dañadas por plantaciones comerciales.

Tomato (Solanum lycopersicum L.) is one of the most important crops in Mexico due to its economic and nutritional value. Among main diseases tomato production Fusarium wilt, which can cause 60% losses (Ascencio et al, 2008). Mixed infections species or other fungi genera, would increase disease severity. During April May 2021, plants with more than 60 days old, were collected from areas Aguascalientes (22°03'46.5"N 102°05'17.4"W 22°04'53.64"N 101°58'55.81"W) Zacatecas (23°05'59.2"N...

The potato/tomato psyllid, Bactericera cockerelli (Šulc), is among the most important pests of solanaceous crops as a vector pathogen ‘Candidatus Liberibacter solanacearum’ (Lso). Lso-infected psyllids often arrive in crop fields from various wild species Solanaceae and Convolvulaceae, especially those that provide early-season hosts for vector. Physalis are perennial plants within family with broad geographical distributions overlap B. cockerelli, yet status many or Lso remains unknown. Our...