ROLE OF METEOROLOGICAL FACTOR IN LONG-TERM  POPULATION DYNAMICS OF THE EUROPEAN CORN BORER,  Ostrinia nubilalis Hbn., IN KRASNODAR AREA: THE ANALYSIS  OF LIFE TABLES

Фролов, А. Н.

doi:10.15389/agrobiology.2020.1.184eng

Cited by 4 publications

(2 citation statements)

References 11 publications

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“…Still, the eggs laid by the females do not have favorable conditions of temperature and humidity for the larvae to hatch. In their study, Frolov and Grushevaya [ 43 , 44 ] found that some of the larvae, up to 30%, pupated, and a new generation appeared. The same conclusion was reached by Barbulescu [ 45 , 46 , 47 ], who observed that in southern Romania’s conditions, 20% of the larvae transform into pupae, and a second generation of moths appears.…”

Section: Discussionmentioning

confidence: 99%

European Corn Borer (Ostrinia nubilalis Hbn.) Bioecology in Eastern Romania

Pintilie,

Trotuș,

Tălmaciu

et al. 2023

Insects

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Between 2020 and 2021, we conducted research in eastern Romania to monitor the bioecology of the European corn borer (Ostrinia nubilalis Hbn.), an important pest of corn. The bioecology research established the pest stage duration (egg, larva, pupa, and moth), the flight curve, and the flight peak. The bioecological study occurred in the experimental corn field and a field cage. According to our findings, the insect has one generation per year. The European corn borer hibernates as a mature larva in corn residues and continues developing in the spring, when the weather warms. It pupates from May to July over 37 days. Analyzing the data recorded during the winters of 2020 and 2021, we observed that the warming trend favored the high survival of hibernating larvae (60.7%). Due to the large number of mature larvae that had favorable conditions during the winter, there is an intense flight, starting in June and ending in September. When the first moth was caught in the light trap, the ∑(tn-10) °C (sum of degree days) was 245.6 °C. In 2020, the flight was recorded for 94 days. In 2021, the European corn borer flight lasted 104 days. The initial egg masses were detected when the total of ∑(tn-10) °C reached 351.5 °C. Moths laid the eggs for 25 days, mostly during peak flight in late June and early July. The first larvae hatched when ∑(tn-10) °C totaled 438.4 °C, and stages III–V were recorded in the harvested crop. Understanding the bioecology of the European corn borer can offer valuable insights into managing population levels and identifying optimal timing for addressing infestations in corn crops.

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Section: Discussionmentioning

confidence: 99%

European Corn Borer (Ostrinia nubilalis Hbn.) Bioecology in Eastern Romania

Pintilie,

Trotuș,

Tălmaciu

et al. 2023

Insects

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“…In the central chernozem region of Russia the yield losses reached 15% in maize (SHPANEV et al 2019). The intensity of attack of Ostrinia nubilalis varied from year to year depends of climatic condition (FROLOV and GRUSHEVAYA, 2020). In their study reported that European corn borer (ECB) population dynamics significantly related to environmental condition and that survival egg and larva depending from air temperature and air humidity during the last decade of May in the Krasnodar area, what confirmed earlier study which reported significant effect of weather conditions on ECB infestation in sweet maize (VELASCO et al, 2007;KESZTHELYI, 2010;MAIORANO, 2012;WALIGÓRA et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Influence of maize hybrids and applayed insecticides on Ostrinia nubilalis Hbn. attack

Grcak,

Gosic-Dondo,

Grcak

et al. 2022

Genetika

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Ostrinia nubilalis Hbn. is a corn pest that can do great damage to plants in some seasons. The aim of this paper is to study the resistance / susceptibility of hybrids to the attack of European corn borer and the effects of different doses of insecticides and time of application in protection against pests on maize plants, but primarily the influence of hybrids on attack intensity. The six maize hybrids of different maturation groups (ZP 427, ZP 434, ZP 555, ZP 600, ZP 606 and ZP 666) used for study effect of attack of Ostrinia nubillalis Hbn., on control variant T1 without application of insecticide and on variant treated with two insecticides Fobos EC (bifentrin - 200 ml ha-1) and combination of Match 050 EC and Nurelle D (lufenuron 50 g l-1 and hlorpirifos 500 g l-1 + cipermetrin 50 g l-1), 0.75 l ha-1) in two terms (in the first generation of insect flying T2 and T3 and in the second generation of insect flying T4 and T5) in three replication. The results showed the highest intensity of Ostrinia nubilalis Hbn. attack and degree of damages on control variant and significant differences between treatments for investigated parameters. Observing all hybrids and treatments, there was no statistical significance between the six examined maize hybrids of different maturity groups. In the control variant, the greatest attack (damage) was in plants, namely in the hybrid ZP 666 (94.28%) and ZP 606 (93.90%) and among the variants of applied insecticides, the greatest damage was found in the treatment T5 with the applied combination of Match + Nurelle in hybrid ZP 555 and was 92.02%. On treatment T1-control variant without insecticides, the smallest attack with Ostrinia nubilalis Hbn. was found in the hybrid ZP 434 (from 88.76%) and among the variants of applied insecticides, the smallest attack was found on variant T2 with applied Phobos in the first generation of insect in hybrid ZP 434 and amounted to 77.12%. The attack of Ostrinia nubilalis Hbn. and variation of average mass of maize cob varied in dependence of maze of hybrids and variant of insecticides application.

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Leds and semiochemicals vs. sex pheromones: tests of the european corn borer attractivity in the Krasnodar territory

2020

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In two geographical points of the Krasnodar Territory, viz. vil. Botanika, Gulkevichi District (eastern subzone of the Central natural-economic zone of the Krasnodar Territory) and st. Kurchanskaya, Temryuk District (Anapo-Taman natural-economic zone) on industrial plantations of maize, Delta sticky traps supplied with various baits were tested for attractiveness for adults of the European corn borer (ECB), Ostrinia nubilalis Hbn. In contrast to sex pheromones, traps with ‘bisex lure’ (semiochemicals phenylacetaldehyde and 4-methoxy-2-phenethyl alcohol) or LEDs captured a considerable number of females, whose prognostic value was significantly higher than that of males. On maize fields near Botanika traps with ‘bisex lure’ caught moths almost at 20- and traps with LEDs more than 70-fold higher rate as compared to sex pheromones. On maize plantations near Kurchanskaya, where both the saturation of crop rotations with maize fields and the pest population is significantly lower, semiochemicals caught ECB moths at the same rate as sex pheromones, in contrast to LEDs, which attracted insects by an order of magnitude more frequently. The results of the tests indicate that the use of LED traps for monitoring of ECB is promising under the modern economic situation of expanding the territories intended for the production of corn grain.

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ROLE OF METEOROLOGICAL FACTOR IN LONG-TERM POPULATION DYNAMICS OF THE EUROPEAN CORN BORER, Ostrinia nubilalis Hbn., IN KRASNODAR AREA: THE ANALYSIS OF LIFE TABLES

Cited by 4 publications

References 11 publications

European Corn Borer (Ostrinia nubilalis Hbn.) Bioecology in Eastern Romania

European Corn Borer (Ostrinia nubilalis Hbn.) Bioecology in Eastern Romania

Influence of maize hybrids and applayed insecticides on Ostrinia nubilalis Hbn. attack

Leds and semiochemicals vs. sex pheromones: tests of the european corn borer attractivity in the Krasnodar territory

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