Armyworm Spodoptera Frugiperda Research Articles

Insecticidal activity of essential oils on Spodoptera frugiperda and selectivity to Euborellia annulipes.

Fall armyworm (Spodoptera frugiperda) is the main species that causes damage to the maize crop in Brazil. In the perspective of studying alternatives of control of this pest that preserve the natural enemies, the aim of this research was to evaluate the insecticidal efficiency of the essential oils of Vanillosmopsis arborea and Lippia microphylla on S. frugiperda and verify the selectivity to the predator Euborellia annulipes. The bioassays were carried out in the Agricultural Entomology Laboratory of the Federal University of Paraiba, using insects, from 3rd instar of S. frugiperda and E. annulipes, originating from mass rearing in the laboratory itself. Dilutions of the oils were performed in Tween® 80 at concentrations of 0, 100, 150 and 200 mg mL-1. 1.0 μL from each dilution was applied to the prothoracic region of the insects. The S. frugiperda mortality was verified by topical contact of V. arborea oil with LC10 = 74.3 mg mL-1 and LC50 = 172.86 mg mL-1, for L. microphyla, LC10 = 51.26 mg mL-1 and LC50 = 104.52 mg mL-1. The observed lethal concentrations for E. annulipes were V. arborea LC10 = 71.3 mg mL-1 and LC50 = 160.2 mg mL-1. While L. microphyla, were LC10 = 50.3 mg mL-1 and LC50 = 134.67 mg mL-1. The essential oils of V. arborea and L. microphylla are efficient in the control of S. frugiperda, but are not selective to the predator E. Annulipes.

POTENSI PENGENDALIAN HAYATI HAMA SPODOPTERA FRUGIPERDA UNTUK KEBERLANJUTAN PRODUKSI JAGUNG

The armyworm Spodoptera frugiperda, which damages corn plants, is one of the invasive pests. The armyworm S. frugiperda damages corn plants by eating leaf tissue from one side so that the remaining epidermal tissue then makes holes in the leaves and eats from the edge of the leaf to the inside, which causes perforation in the leaves. Control efforts using insecticides have not been practical due to the feeding behaviour of the second and third instar larvae that settle on the inside of the leaves under protected conditions. Therefore, it is necessary to carry out other control techniques that can suppress the development of environmentally friendly S. frugiperda by considering economic and ecological aspects, namely biological control.
 Biological control optimizes the role of natural enemies as biological control agents in efforts to manage pest populations which are part of the chain in agroecosystems. Utilization of natural enemies, parasitoids, predators, and pathogen, can suppress the development of the S. frugiperda pest in corn, reducing the use of synthetic pesticides. Natural enemies of S. frugiperda include the egg parasitoid Telenomus sp. and Trichogramma sp.; larva parasitoid Glyptapanteles creatonoti (Viereck), solitary larval parasitoid Campoletis chlorideae Uchida, and parasitoid larvae of the order Hymenoptera: Ichneumonidae: Ichneumoninae and G. creatonoti. as well as an entomopathogenic species, Nomuraea rileyi (Farl.) Samson. Natural enemies can control S. frugiperda pests to save sustainable maize yields based on the basic principles of sustainable agriculture models. Agroecological steps are taken to reduce the population of S. frugiperda in corn plants by:/ (1) sustainable management of soil fertility, primarily actions that maintain or store soil organic carbon; (2) intercropping with properly selected companion plants; and (3) diversification of the agricultural environment through the management of (semi) natural habitats at various spatial scales.

Daya Rusak Spodoptera frugiperda J. E. Smith pada Tanaman Jagung yang Diberi Perlakuan Pestisida Nabati Daun Pepaya dan Bawang Putih

Plant Pest Organisms (PPO) that have recently become a problem in corn cultivation are Fall Armyworm (FAW) or the armyworm Spodoptera frugiperda J. E. Smith. The damage of S. frugiperda on sweet corn and feed is thought to be different and is not yet known. This study aims to determine the level of destruction of S. frugiperda on sweet corn and feed with control treatment of biological pesticides on papaya leaves and garlic, 30 ml/l water, 40 ml/l water, and 50 ml/l water. This study used a completely Randomized Design (CRD) with two factors. Corn varieties and concentrations of vegetable pesticides. The treatments used in this study were water control, chemical control, and three treatments of biological pesticide concentration with four replications. The results of observations 1-3 (age 0-2 weeks after planting/ WAP) have not found an attack, occurred on the study to 4-7 (age 3-6 WAP). Pesticides of papaya leaf and garlic affected the destructive power of S. frugiperda, where the concentration factor on the incidence of attack and attack intensity had a very significant effect, an interval of the variety factor had to make a difference on the incidence of attack but did not significantly affect the potency of the attack. The 50 ml/l concentration treatment on sweet corn and feed varieties was the best in suppressing the percentage of attack (12.50; 23.40%), attack intensity (5.92; 8.00%), and damage to the cob (1.79); 4.79%).

Identification of a fall armyworm (Spodoptera frugiperda)-specific gene and development of a rapid and sensitive loop-mediated isothermal amplification assay

The fall armyworm [FAW, Spodoptera frugiperda (J E Smith)], a moth native to America, has spread throughout the world since it was first discovered in Africa in 2016. The FAW is a polyphagous migratory pest that can travel over long distances using seasonal winds or typhoons because of its excellent flying ability, causing serious damage to many crops. For effective FAW control, accurate species identification is essential at the beginning of the invasion. In this study, the FAW-specific gene Sf00067 was discovered by performing bioinformatics to develop a fast and accurate tool for the species-specific diagnosis of this pest. An Sf00067 loop-mediated isothermal amplification (LAMP) assay was developed, and optimal conditions were established. The Sf00067 6 primer LAMP (Sf6p-LAMP) assay established in this study was able to diagnose various genotype-based strains of FAW captured in Korea and FAWs collected from Benin, Africa. Our FAW diagnostic protocol can be completed within 30 min, from the process of extracting genomic DNA from an egg or a 1st instar larva to species determination.

Life-history and life-table parameters of fall armyworm (Spodoptera frugiperda) for maize (Zea mays) in tropical Indian condition

Fall armyworm (Spodoptera frugiperda (J. E. Smith)) is an invasive pest reported in 2018 from India which principally attacks maize during vegetative and reproductive stages. Investigations were carried out to understand biologyof the pest in new tropical and sub-tropical environment for devising effective management strategies in maize. Thebiological aspects included morphometrics and life cycle of fall armyworm reared on maize under laboratory conditions at 26–31ºC and 50–65% relative humidity during August-September, 2018 to January-February, 2019 i.e. 34th to 6th standard weeks (SDW). Life table parameters including stage specific and age specific fecundity, population growth attributes and life expectancy of fall armyworm were computed. The diameter of eggs, length and width of body and their head capsules of different larval instars, pre-pupa, pupa, male and female adults were also measured.

Transcriptomic Responses of Fall Armyworms (Spodoptera frugiperda) Feeding on a Resistant Maize Inbred Line Xi502 with High Benzoxazinoid Content

The fall armyworm (Spodoptera frugiperda) is a devastating invasive insect herbivore. Its success on its preferred host plant, maize (Zea mays), is supported by numerous specialized detoxification mechanisms that suppress the defense responses of maize. In this study, we used a resistant Chinese maize cultivar, Xi502, which showed slower growth and lower yield-related phenotypes compare with maize inbred line B73. Comparative transcriptomic analyses demonstrated that B73-fed fall armyworm larvae have a significantly faster transcriptomic re-configuration toward maturation compared to their siblings fed with Xi502 leaves, whereas a number of putative aromatic breakdown -related DEGs were specifically induced when feeding on Xi502. Targeted metabolomic quantification demonstrated that Xi502 contains significantly higher levels of various benzoxazinoid compounds. Artificial feeding with the structural analog of a benzoxazinoid compound preferentially accumulated in Xi502 demonstrated a significant growth inhibition effect on FAW larvae. These results provide important genetic material and preliminary evidence for further dissection of the FAW-resistance mechanism in maize.

Mechanism of Action of Endophytic Fungi Hypocrea lixii and Beauveria bassiana in Phaseolus vulgaris as Biopesticides against Pea Leafminer and Fall Armyworm.

Endophytic fungal isolates Hypocrea lixii F3ST1 and Beauveria bassiana G1LU3 were evaluated for their potential to endophytically colonize and induce active compounds in Phaseolus vulgaris, as a defense mechanism against pea leafminer (Liriomyza huidobrensis) and fall armyworm (Spodoptera frugiperda). Endophytic colonization was achieved through seed inoculation with the volatile emissions from P. vulgaris plants being analyzed using GC-MS. The crude extracts of P. vulgaris obtained using methanol and dichloromethane were assayed against leafminer and fall armyworm larvae using leaf dipping and topical application, respectively. The two isolates successfully colonized the entire host plant (roots, stems, and leaves) with significant variation (p < 0.001) between fungal isolates and the controls. The results showed qualitative differences in the volatile profiles between the control plants, endophytically colonized and insect-damaged plants attributed to fungal inoculation and leafminer damage. The crude methanol extracts significantly reduced the percentage pupation of 2nd instar leafminer larvae (p < 0.001) and adult-flies emergence (p < 0.05). The survival of the 1st instar fall armyworm larvae was also significantly reduced (p < 0.001) compared to the controls. This study demonstrated the high potential of endophytic fungi H. lixii and B. bassiana in inducing mainly specific defense compounds in the common bean P. vulgaris that can be used against pea leafminer and fall armyworm.

Neonicotinoids can cause arrested pupal ecdysis in Lepidoptera

Recently, we reported a novel mode of action in monarch butterfly (Danaus plexippus) larvae exposed to neonicotinoid insecticides: arrest in pupal ecdysis following successful larval ecdysis. In this paper, we explore arrested pupal ecdysis in greater detail and propose adverse outcome pathways to explain how neonicotinoids cause this effect. Using imidacloprid as a model compound, we determined that final-instar monarchs, corn earworms (Helicoverpa zea), and wax moths (Galleria mellonella) showed high susceptibility to arrested pupal ecdysis while painted ladies (Vanessa cardui) and red admirals (Vanessa atalanta) showed low susceptibility. Fall armyworms (Spodoptera frugiperda) and European corn borers (Ostrinia nubilalis) were recalcitrant. All larvae with arrested ecdysis developed pupal cuticle, but with incomplete shedding of larval cuticle and unexpanded pupal appendages; corn earworm larvae successfully developed into adults with unexpanded appendages. Delayed initiation of pupal ecdysis was also observed with treated larvae. Imidacloprid exposure was required at least 26 h prior to pupal ecdysis to disrupt the molt. These observations suggest neonicotinoids may disrupt the function of crustacean cardioactive peptide (CCAP) neurons, either by directly acting on their nicotinic acetylcholine receptors or by acting on receptors of inhibitory neurons that regulate CCAP activity.

Application of e-information for Fall Armyworm control among maize farmers in Southwestern Nigeria

This study assessed the application of electronic messages on Fall Armyworm (FAW) (Spodoptera frugiperda) disseminated to farmers in Southwestern Nigeria. Multi-stage sampling method was used to select 205 maize farmers. Using ex-post factor research design, electronic information on FAW were broadcast to farmers through formats such as voice calls and text messages. Each of the respondents received five batches of voice calls and text messages in English and Yoruba Languages for 2 – 3 weeks. Data were collected on the suitability of e-message, perception and constraints to electronic information use. Data collected were described and analyzed using Pearson Product Moment Correlation (PPMC) and linear regression at ?0.05. Mean age of respondents was 40years and 69.3% could communicate in Yoruba while only 39.9% understood the English language. Majority of the farmers expressed unfavourable perception to the use of e-messages for FAW information. Constraints identified with e-message use were related to the poor interactivity of the medium, though suitable for 55.6% of the respondents. Level of education and perception were major determinants of the suitability of e-messages disseminated. Thus, dissemination of e-messages to farmers using local languages was advocated in agricultural interventions.

A mathematical model for fall armyworm management on maize biomass

Fall armyworm (Spodoptera frugiperda), a highly destructive and fast spreading agricultural pest native to North and South America, poses a real threat to global food security. In this paper, to explore the dynamics and implications of fall armyworm outbreak in a field of maize biomass, we propose a new dynamical system for maize biomass and fall armyworm interaction via Caputo fractional-order operator, which is not only a nonlocal operator but also contains all characteristics concerned with memory of the dynamical system. We define the basic reproduction number, which represents the average number of newborns produced by one individual female moth during its life span. We establish that the basic reproduction number is a threshold quantity, which determines persistence and extinction of the pest. Finally, we simulate the Caputo system using the Adam–Bashforth–Moulton method to illustrate the main results.

A system dynamics model for pests and natural enemies interactions

Stemborers (Busseola fusca, Sesamia calamistis and Chilo partellus), the fall armyworm (Spodoptera frugiperda) and associated parasitoids constitute an interacting system in maize fields in Kenya. This work aims at developing and evaluating models that represent the evolution of those interactions by applying system thinking and system dynamics approaches with its archetypes [causal loop diagram (CLD), reinforcing (R) and balancing (B)] to analyse the population of these multi-species systems. The software Vensim PLE 8.0.9 was used to implement the models and carry out the simulations of single- and multi-species systems. The results showed that when a single pest species with its associated parasitoids interact with the host plant, the species was able to establish and sustain by cyclical relationship between populations of the pest and the associated parasitoids. However, in multi- pest species systems, dominance of S. frugiperda and C. partellus over B. fusca and S. calamistis was observed, but without extinction. However, there was a likelihood for B. fusca being displaced by C. partellus. Overall, the models predict the co-existence of fall armyworm with stemborer species as an additional pest of maize in Africa that need to be considered henceforth in designing IPM strategies in maize.

Factors influencing the occurrence of fall armyworm parasitoids in Zambia

Invasive alien species have environmental, economic and social impacts, disproportionally threatening livelihood and food security of smallholder farmers in low- and medium-income countries. Fall armyworm (FAW) (Spodoptera frugiperda), an invasive insect pest from the Americas, causes considerable losses on maize to smallholder farmers in Africa since 2016. The increased use of pesticides to control FAW in Africa raises concerns for health and environmental risks resulting in a growing interest in research on biological control options for smallholder farmers. In order to evaluate the occurrence of local natural enemies attacking FAW, we collected on a weekly basis FAW eggs and larvae during a maize crop cycle in the rainy season of 2018–2019 at four locations in the Lusaka and Central provinces in Zambia. A total of 4373 larvae and 162 egg masses were collected. For each location and date of collection, crop stage, the number of plants checked and amount of damage were recorded to analyse which factors best explain the occurrence of the natural enemy species on maize. Overall parasitism rates from local natural enemies at each location varied between 8.45% and 33.11%. We identified 12 different egg-larval, larval and larval-pupal parasitoid species. Location, maize growth stage, pest density and larval stage significantly affected parasitoid species occurrence. Our findings indicate that there is potential for increasing local populations of natural enemies of FAW through conservation biological control programmes and develop safe and practical control methods for smallholder farmers.

Synergistic effects of binary mixtures of linalool with pyrethroids against fall armyworm

The present work aimed to determine the toxicity of linalool and evaluate the lethal and toxic effects of linalool associated with pyrethroids in binary mixtures to fall armyworm (Spodoptera frugiperda). The insects used in the experiment were obtained from stock breeding initiated from larvae collected from conventional corn plants, grown in an experimental area, in the city of Uberlândia, Minas Gerais. Also, it was obtained essential oil from a variety of Ocimum basilicum, with a high content of linalool (80%), found naturally, as a measure of comparison of different linalool (97.5%) assays. Dose-response bioassays with 3rd instar larvae were performed to determine lethal dose for 50% mortality (LD50) of linalool. Toxicity tests were also performed with O. basilicum essential oil and with pyrethroid insecticides: deltamethrin and its commercial product (Decis 25 EC, Bayer®). After this, combinations between different doses of these products were made and applied on 3rd instar larvae of Spodoptera frugiperda (Smith). Linalool presented high toxicity to S. frugiperda (LD50 = 0.177 μL a.i. μL-1). It was observed neurotoxic effects after the linalool application since the insects presented an aspect of confusion, followed by extreme agitation and finally death. All binary mixtures caused mortality higher than the products applied alone (deltamethrin and linalool) used at 100% LD50, except to 75% LD50 deltamethrin added to 25% LD50 linalool, whose mortality did not differ the products alone, in 24 hours. It was obtained over 90% larval mortality when linalool was combined with 25% LD50 of deltamethrin, in 24 and 48 hours after application, and over 80% of mortality when linalool was combined with 25% LD50 of Decis, only in 48 hours after application. We conclude that linalool is a potential insecticidal and can be associated with pyrethroids to control of S. frugiperda. Further studies are required in order to evaluate the synergistic combinations against field populations of S. frugiperda.

Bioclimatic zonation and potential distribution of Spodoptera frugiperda (Lepidoptera: Noctuidae) in South Kivu Province, DR Congo

BackgroundThe fall Armyworm (FAW) Spodoptera frugiperda (JE Smith), is currently a devastating pest throughout the world due to its dispersal capacity and voracious feeding behaviour on several crops. A MaxEnt species distributions model (SDM) was developed based on collected FAW occurrence and environmental data’s. Bioclimatic zones were identified and the potential distribution of FAW in South Kivu, eastern DR Congo, was predicted.ResultsMean annual temperature (bio1), annual rainfall (bio12), temperature seasonality (bio4) and longest dry season duration (llds) mainly affected the FAW potential distribution. The average area under the curve value of the model was 0.827 demonstrating the model efficient accuracy. According to Jackknife test of variable importance, the annual rainfall was found to correspond to the highest gain when used in isolation. FAWs’ suitable areas where this pest is likely to be present in South Kivu province are divided into two corridors. The Eastern corridor covering the Eastern areas of Kalehe, Kabare, Walungu, Uvira and Fizi territories and the Western corridor covering the Western areas of Kalehe, Kabare, Walungu and Mwenga.ConclusionsThis research provides important information on the distribution of FAW and bioclimatic zones in South Kivu. Given the rapid spread of the insect and the climatic variability observed in the region that favor its development and dispersal, it would be planned in the future to develop a monitoring system and effective management strategies to limit it spread and crop damage.

The Biology of Fall Army Worm (Spodopterafrugiperda. J. E. Smith) in Sudan

The Fall armyworm (Spodoptera frugiperda) is considered among the economic important pests in Sudan. Therefore, it became necessary to study and understand its biology and find out the appropriate control measure (s). To achieve the above objective, experiments based on Randomized Complete Block Design (RCBD) were carried out during the period from September 2018 to August 2019, where the Fall armyworm (FAW) was reared in the laboratory and fed on a nutrient médium composed of Corn leaves. The results displayed the ranges of eggs laid by a female was 890–1169. The egg incubation period ranged between 3-13 days. The larval duration ranged between (13-50) days and the pupal duration was between (7-20) days under a temperature of 21-300c and a Relative Humidity (RH) of 65 ± 5%. The longevity of the adults was 1-20 days, and the range of the full lifecycle was (24-100). However, six generations of FAW were obtained within one year. This study concludes that in Sudan FAW breeds continously throughtout the year and it recommends further studies on the biology and effective management of this invasive pest

Toxicity of the Lippia gracilis essential oil chemotype, pinene-cineole-limonene, on Spodoptera frugiperda (Lepidoptera: Noctuidae)

Lippia gracilis Schauer, Verbenaceae, is a plant popularly known as "Alecrim-da-Chapada" or “Alecrim-de-Serrote", characteristic of the savanna areas in North and Northeast Brazil. Its essential oil has been tested for pest control due to its bioactive potential. In this work, the chemical composition was analyzed and the insecticidal effect of the pinene/cineol/limonene chemotype leaf oil of L. gracilis, from Chapada das Mesas, Maranhao State, was tested against the armyworms Spodoptera frugiperda (Lepidoptera: Noctuidae). GC and GC-MS analysis identified α-pinene (24.5%), 1,8-cineole (16.2%), β-pinene (11.9%) and limonene (9.6%) as the main constituents of the oil, which presented a yield of 4.3%. For the insecticidal activity, the topical and surface contact tests were carried out with ten-days armyworm’s larvae (third instar), in different concentrations of oil and α-pinene, its main constituent. For the oil, the acute topical toxicity (LD50) was 0.09 μL/insect, and the contact surface toxicity (LC50) was 1.55 μL/cm2, while for α-pinene these values were (LD50) 0.28 μL/insect and (LC50) 2.50 μL/cm2, respectively. Thus, the oil was more active than α-pinene showing that the insecticide effect is due to the synergistic action of the mixture of its constituents. The results lead to the conclusion that the essential oil is promising as a sustainable tool in the management of S. frugiperda.

Effects of entomopathogenic fungi (EPFs) and cropping systems on parasitoids of fall armyworm (Spodoptera frugiperda) on maize in eastern central, Tanzania

ABSTRACTFall armyworm (FAW), Spodoptera frugiperda is a key pest of maize in Africa including Tanzania. Field trials were conducted to determine the incidence of species of parasitoids and their rate of parasitism on selected IPM treatments. The experiment was conducted at crop Museum of Sokoine University of Agriculture, Morogoro, Tanzania for two cropping seasons and arranged in a split – split-plot design with three replicates. The treatment combinations were push–pull without application of pesticides, push–pull and Beauveria bassiana, push–pull and Metarhizium anisopliae sensu lato, push–pull and flubendamide, cowpea + maize without application of pesticides, and cowpea + maize and Beauveria bassiana. Others were cowpea + maize and Metarhizium anisopliae sensu lato, cowpea + maize and flubendamide, maize sole crop without application of pesticides, maize sole and Beauveria bassiana, maize sole and Metarhizium anisopliae, and maize sole and flubendamide. The results showed that one species of egg-larva parasitoids (Chelonus bifoveolatus) and two species of larva parasitoids (Coccygidium luteum and Cotesia sp.) were recovered from the sampled fall armyworm eggs and larvae. The percentage of parasitism of C. bifoveolatus and C. luteum differed significantly among intercropping systems (p < .001). The results also showed that the percentage of larval parasitism of Cotesia sp. differed significantly (p < .001) among intercropping systems only. These results confirm biological control of fall armyworm through the conservation of natural enemies in Tanzania.

HIGHLIGHTS ON APPROPRIATE MANAGEMENT PRACTICES AGAINST FALL ARMY WORM (SPODOPTERA FRUGIPERDA) IN THE CONTEXT OF NEPAL

Fall Armyworm (Spodoptera frugiperda) as a polyphagous pest having more than 85 hosts. It is a trans-boundary pest having high potential to spread. In Nepal, It was first reported on May 9, 2019 from Nawalparasi district of western Nepal in maize crop. The matured larvae of Fall armyworm (FAW) feed on maize cab or kernels which reducing yield and quality. In Africa, more than 98% maize is affected in 2018. It could be a higher risk to the maize growers’ farmer of Nepal if management practices are not followed timely. Quality seed, Avoidance of late planting, Push-pull technology and plant diversity are Preventive measure found successful against FAW in American and African Countries. Spinosad, Flubendiamide, spinetoram and Cholarantraniliprole are effective chemical whereas Neem based pesticide is best bio-pesticide for pest management. Bacillus thuringenesis (Bt), Baculovirus and Beauveria bassiana were found as biological effective control agent against FAW. Among various methods, integrated pest management is the major procedure found successful in African countries. Light trap, pheromone trap and scouting is another best option for monitoring of adult.

Use of the Triple Helix model of innovation to explore the factors conditioning the effectiveness of a framework for monitoring the prevalence and impact of the fall armyworm in Africa

ABSTRACT This paper introduces a suite of technical tools developed by the Food and Agriculture Organization of the United Nations (FAO) which aim to monitor the prevalence and impact of a new invasive insect pest in Africa – Fall Armyworm (Spodoptera frugiperda). The roll-out of the tools is still at an early phase, and further studies will be necessary to evaluate the outcomes. The specific content of this paper will be the description of the four tools – which together make up a monitoring framework –, followed by an analysis of the factors determining the likely future effectiveness of the tools and the framework according to innovation theory. More specifically, the Triple Helix Model of innovation will be evaluated and used to develop specific research questions, the answers to which will likely determine the future effectiveness of the FAW monitoring framework and its tools. It will emerge that a combination of institutional, technological and social factors will condition the effectiveness and sustainability of the suite of innovative monitoring tools developed. Furthermore, the Triple Helix model itself is shown to have a crucial limitation in this case due to the fact that it does not explicitly consider the role of civil society in the effective innovation process.

Efectos genéticos de la resistencia a Spodoptera frugiperda en líneas de maíz derivadas de germoplasma nativo de Tamaulipas

El gusano cogollero (Spodoptera frugiperda) daña al maíz durante todo el ciclo biológico de la planta; una opción para esta problemática es el desarrollo y utilización de cultivares resistentes; para ello, es necesario conocer el comportamiento genético de las características que inducen esta resistencia. Se evaluó genéticamente la resistencia a S. frugiperda por no preferencia de cultivares de maíz desarrollados con germoplasma nativo de Tamaulipas; en el ciclo OI 2014-2015, en Güémez, Tamaulipas, en tratamientos de fertilización y no fertilización se evaluaron seis líneas endogámicas de maíz derivadas de germoplasma nativo, sus cruzas directas y recíprocas y cuatro híbridos comerciales, en un diseño de bloques completos al azar; se realizó un análisis dialélico para determinar efectos maternos, recíprocos, de aptitud combinatoria general y específica; el daño foliar por S. frugiperda se estimó en las etapas de sexta hoja ligulada (DFH6), décima (DFH10) y a floración (DFHF). Hubo menor daño de S. frugiperda en el tratamiento de fertilización comparado con el de no fertilización; también diferencias estadísticas entre cultivares para el DFH6 e interacción significante entre cultivares y tratamientos de fertilización. Las cruzas PWL1S3×PWL6S3 y TGL2S3×LlHL5S3 tuvieron efectos de aptitud combinatoria específica negativa; la primera mostró efectos recíprocos significativos debido a efectos maternos de la línea PWL1S3, esto evidencia que la variación existente para esta característica se explica mediante efectos maternos y no aditivos; además, presen DFH6 de S. frugiperda de 0.867 demostrando menor preferencia del insecto en comparación al resto de los cultivares.