Intensidades de perdas, ataque de insetos-praga e incidência de inimigos naturais em cultivares de milho em cultivo de safrinha

Picanço, Marcelo Coutinho; Galvan, Tederson L.; Galvão, João Carlos Cardoso; Silva, Eny do Carmo; Gontijo, Lessando M.

doi:10.1590/s1413-70542003000200013

Cited by 7 publications

(9 citation statements)

References 10 publications

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“…Predators more abundant in maize plants is of families Forficulidae, Anthocoridae, Chrysopidae, Coccinellidae, Geocoridae and Formicidae (Badji et al, 2004), as observed in this study, for both areas. Doru luteipes (Dermaptera: Forficulidae) is the natural enemy more damge (Picanço et al, 2003). Likewise our results, organic management increased abundance and diversity of arthropod in sugarcanecane crops (Santos et al, 2017).…”

Section: Resultssupporting

confidence: 81%

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Arthropod fauna associated with organic and conventional maize crop

2021

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The corn crop has a marked sensitivity to biotic and abiotic stresses. As a control method, basically, transgenic plants have been used in association with chemical control. However, frequent applications of insecticides affect the conservation of biodiversity, and consequently, the natural regulation of insect populations. Thus, the objective of the work was to compare the diversity of arthropodofauna associated with the cultivation of corn in organic and conventional systems. The experiments were carried out at Fazenda Nossa Senhora Aparecida, in Hidrolândia/GO, in two areas: one in a consolidated organic system and the other in a conventional system. The organic area (1 ha) was sown with the Creole variety Palha Roxa and no type of cultural treatment was carried out. The conventional area (10 ha) was sown with a transgenic hybrid resistant to the herbicide glyphosate 30F53VYHR and two chemical fertilizers were applied, for planting and cover, two applications of herbicides and an application of insecticide. To survey the arthropodofauna, in each area, two collections were made with six pitfall soil traps. The first collection was carried out in the vegetative stage and the second in the reproductive stage, approximately at 35 and 80 days after planting, respectively. The traps were kept in the field for a week. In addition, a collection with entomological net was carried out in 10 plants chosen at random. The collected insects were stored in plastic pots containing 70% alcohol and taken to the laboratory for quantification and identification. The data referring to the total of insects collected were submitted to the T test at 5% probability. In the two collected with pitfall traps, the largest number of arthropods was collected in the area of organic cultivation, with greater diversity of orders and families in this area. In the collection performed with entomological network, there was no difference between the places of cultivation. Organic crops provide better conditions for establishment and development for insects, especially those that spend some life in the soil. Therefore, the diversity of arthropods is greater in this cultivation system.

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Section: Resultssupporting

confidence: 81%

“…Parasitoids of Hymenoptera e Diptera (Figueiredo et al, 2006;Cruz, 2008) and predators such ladybugs, chrysopids, sirphids, predator bugs and earwigs (Cruz, 2008). The earwigs Doru luteipes specie (Scudder) (Dermaptera: Forficulidae), e.g., is an efficient predator of S. frugiperda (Picanço et al, 2003).…”

Section: Spodoptera Frugiperdamentioning

confidence: 99%

Arthropod fauna associated with organic and conventional maize crop

2021

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“…They must overcome this mechanical barrier in order to survive (ZALUCKI et al, 2002). Although some studies have reported the occurrence of S. eridania in corn (PICANÇO et al 2003) and rattlebox (DIAS et al, 2009), this study showed that it did not develop normally on these hosts. In a study recently developed by Silva et al (2017), oat, wheat and maize negatively affected the development and survival of the larvae of S. eridania and S. cosmioides, thus corroborating our results for S. eridania in maize.…”

Section: Longevity and Reproduction Of Spodoptera Eridaniacontrasting

confidence: 55%

“…Polyphagous defoliators such as S. eridania (KING & SAUNDERS, 1984;NORA & REIS-FILHO, 1988;SAVOIE, 1988;SOSA-GOMEZ et al, 1993;PICANÇO et al, 2003;DIAS et al, 2009;MIRANDA, 2010;JESUS et al, 2013) are better adapted to establish in areas with crop rotation and under succession cropping, when compared to oligophagous and monophagous insects, due to the continuous availability of food. Santos et al (2005) species from soybean fields to weedy and cotton-growing areas using them as a refuge and feeding sites.…”

Section: Introductionmentioning

confidence: 99%

Potential of Maize, Millet and Rattlebox to Break the Cycle of 𝘚𝘱𝘰𝘥𝘰𝘱𝘵𝘦𝘳𝘢 𝘦𝘳𝘪𝘥𝘢𝘯𝘪𝘢 (Cramer) (Lepidoptera: Noctuidae)

Favetti

Massarolli

Butnariu

et al. 2021

BJA

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This study evaluated the effect of different crops grown during soybean offseason on the development and reproduction of Spodoptera eridania (Cramer). The experiment was conducted in laboratory at 25°C±1°C, relative air humidity of 70%±10% and a 12h photophase. The plants evaluated were cotton (FMT 701), sunflower (Embrapa 122-V2000), rattlebox (Crotalaria spectabilis Roth), corn (Dekalb 370) and millet (DR-300). The less suitable hosts for the survival of S. eridania were rattlebox, corn and millet. Only cotton and sunflower the specie completed its development (egg to adult). Corn, millet and rattlebox were the crops that most affected the performance of S. eridania, and therefore they could potentially be used in the soybean offseason period to interrupt the life cycle of this species, and thus reduce population incidence during soybean season.

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“…Damage to marketable structures directly affects crop yield [ 1 – 3 ], and ear losses are the most significant impact on total corn crop losses. These losses can be caused by insect pests, physiological plant disorders, fungi and rodents [ 2 , 4 , 5 ]. In the field, the losses may occur from the beginning of the ear development of grains until the grain harvest.…”

Section: Introductionmentioning

confidence: 99%

Spatial distribution and losses by grain destroying insects in transgenic corn expressing the toxin Cry1Ab

et al. 2018

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Insect pests are one of the factors that most impact plant yield. The magnitude of the losses and the spatiotemporal pest distribution in crops is a result of their interactions with the environment. Therefore, the understanding of the causes of production losses and the pest spatial patterns is important for the development of suitable sampling plans and pest management programs. Thus, this study aimed to quantify grain losses caused by insects and to determine the spatial distribution pattern of arthropod pest species in Bt and non-Bt corn. The prevailing insect pests in the corn ears were the earworm and fall armyworm caterpillars (Helicoverpa spp. and Spodoptera frugiperda), the cornsilk fly (Euxesta spp.), the maize weevil (Sitophilus zeamais), and the square-necked grain beetle (Cathartus quadricollis). The non-Bt corn was more attacked by the caterpillars and the weevil, while Bt corn was more affected by the cornsilk fly Euxesta spp. Spatial dependence was significant for the damage caused by the caterpillars, the grain beetle and the maize weevil in both the Bt and non-Bt corn genotypes. The range of the damage caused by the insects was between 9.0–9.7 m for the caterpillars, 6.9–12.20 m for the cornsilk fly, 10.7–80.4 m for the square-necked grain beetle, and 51.9–170.7 m for the maize weevil. The pattern of the spatial distribution of pest damage in both corn genotypes (i.e., Bt and non-Bt corn) was similar with a prevalence of moderate to strong spatial dependence and aggregate damage distribution. The plants near to the sampling points exhibited injury and infestation levels similar to those of the sampled plants.

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Intensidades de perdas, ataque de insetos-praga e incidência de inimigos naturais em cultivares de milho em cultivo de safrinha

Cited by 7 publications

References 10 publications

Arthropod fauna associated with organic and conventional maize crop

Arthropod fauna associated with organic and conventional maize crop

Potential of Maize, Millet and Rattlebox to Break the Cycle of 𝘚𝘱𝘰𝘥𝘰𝘱𝘵𝘦𝘳𝘢 𝘦𝘳𝘪𝘥𝘢𝘯𝘪𝘢 (Cramer) (Lepidoptera: Noctuidae)

Spatial distribution and losses by grain destroying insects in transgenic corn expressing the toxin Cry1Ab

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