scholarly journals Effects of insecticides used against the European corn borer on thrips abundance on maize

2017 ◽  
Vol 53 (No. 1) ◽  
pp. 44-49 ◽  
Author(s):  
Bereś Paweł Krystian ◽  
Kucharczyk Halina ◽  
Górski Dariusz
Keyword(s):  
Chemical Treatment ◽  
Ostrinia Nubilalis ◽  
European Corn Borer ◽  
Corn Borer ◽  
High Effectiveness ◽  
South Eastern ◽  
Population Peak ◽  
Lambda Cyhalothrin ◽  
Single Chemical ◽  
Active Substances

The effect of a single chemical treatment against Ostrinia nubilalis (Hbn.) on thrips abundance on maize in south-eastern Poland was evaluated. Two insecticides: Karate Zeon 050 CS, containing lambda-cyhalothrin, and Proteus 110 OD, containing thiacloprid with deltamethrin, were tested. Maize was sprayed in the second ten days of July, during the abundant occurrence of O. nubilalis larvae, which coincided with the population peak of thrips on plants. The tested active substances showed high effectiveness against thrips, but a better effect, reflected in a decrease in thrips abundance, was found for the mixture of thiacloprid with deltamethrin. The tested insecticides significantly reduced the population of thrips for up to 14 days after treatment.

scholarly journals The effect of insecticides on the total percentage of Ostrinia nubilalis Hbn attack on maize hybrids

Genetika ◽  
2020 ◽  
Vol 52 (1) ◽  
pp. 351-365
Author(s):  
Snezana Gosic-Dondo ◽  
Dragan Grcak ◽  
Milosav Grcak ◽  
Danijela Kondic ◽  
Djuradj Hajder ◽  
...  
Keyword(s):  
Ostrinia Nubilalis ◽  
European Corn Borer ◽  
First Generation ◽  
Plant Protection ◽  
Control Group ◽  
Corn Borer ◽  
Protection Effect ◽  
Maize Hybrids ◽  
Total Percentage ◽  
Active Substances

The objective of the paper was to determine the effect of insecticides on the development of the European corn borer (Ostinia nubilalis Hbn) and the effect of damage in six maize hybrids of different maturity groups. The research involved the following hybrids: ZP 427, ZP 434, ZP 555, ZP 600, ZP 606 and ZP 666. In the field trial, insecticides were applied in two terms, during the flight of O. nubilalis first generation and during the flight of second O. nubilalis generation. We used Fobos EC insecticide and a combination of Match 050 EC + Nurelle D insecticides, whose active substances are different. The active substance in Fobos EC insecticide is bifenthrin 100 g l-1, in Match 050 EC lufenuron 50 g l-1 and, in Nurelle D insecticide, the active ingredient is a combination of chlorpyrifos 500 g l-1 and cypermethrin 50 g l-1. The damage inflicted on plants was assessed in July and September. Fobos insecticide had the best plant protection effect, after its use, the arithmetic mean of the total attack percentage of all hybrids was approximately 81.62% while in the control group, it was approximately 91.72%.

scholarly journals Egg Laying and Caterpillar Hatching Dynamics of Ostrinia Nubilalis Hbn. on Maize (Zea Mays L.) in South-Eastern Poland

2012 ◽  
Vol 52 (1) ◽  
pp. 122-129 ◽  
Author(s):  
Paweł Bereś
Keyword(s):  
Zea Mays ◽  
Ostrinia Nubilalis ◽  
European Corn Borer ◽  
Egg Laying ◽  
Oviposition Period ◽  
Flight Period ◽  
Corn Borer ◽  
The Third ◽  
South Eastern ◽  
Maize Plants

Egg Laying and Caterpillar Hatching Dynamics ofOstrinia NubilalisHbn. on Maize (Zea MaysL.) in South-Eastern PolandDuring the study years, the European corn borer (ECB) (Ostrinia nubilalisHbn.) females began depositing eggs on maize plants between the last ten days of June and the first ten days of July. A maximum number of eggs on plants was found at the beginning of the second ten days of July and at the beginning of the third ten days of July. The last egg clusters were recorded in August. During the five years of the study period, the female oviposition period lasted from 4.5 to 8 weeks. The shortest oviposition period took place during the warm and dry years, while the longest period was during the rainy and relatively cold years. During the study years, within the entire flight period,O. nubilalisfemales deposited from 1,564 to 3,393 eggs on 200 observed plants. The average number of eggs per cluster in the study years was from 10.0 to 15.2. The beginning of caterpillar hatching, based on the observation of empty egg clusters, was recorded in the last ten days of June or in the first and second ten days of July. Mass hatching of the caterpillars was observed in the second and third ten days of July, and only in 2004 was it in the first ten days of August. The last empty egg clusters were recorded in the second and in the third ten days of August.

scholarly journals Effects of different insecticides on the antioxidative defense system of the European Corn Borer (Ostrinia nubilalis Hübner) (Lepidoptera: Crambidae) larvae

2018 ◽  
Vol 70 (4) ◽  
pp. 765-773 ◽  
Author(s):  
Filip Franeta ◽  
Dejan Mircic ◽  
Dajana Todorovic ◽  
Zeljko Milovac ◽  
Nihat Granica ◽  
...  
Keyword(s):  
Ostrinia Nubilalis ◽  
European Corn Borer ◽  
Insect Pests ◽  
Block Design ◽  
Antioxidative Defense ◽  
Defense System ◽  
Corn Borer ◽  
Sh Groups ◽  
Antioxidative Defense System ◽  
Lambda Cyhalothrin

The European corn borer (Ostrinia nubilalis) is one of the most important insect pests of maize, and has a significant impact on the production of this crop. In this work, we examined the effects of different insecticides on the antioxidative defense system of O. nubilalis larvae. The experimental setup consisted of a completely randomized block design with 4 replicates. Four experimental groups were formed as follows: control (C), indoxacarb (250 mL ha-1), chlorantraniliprole (100 mL ha-1) and the chlorantraniliprole+lambda cyhalothrin (200 mL ha-1) group. Larvae from maize stems were collected 20 days after insecticide application and the whole larvae were homogenized. The activities of superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), glutathione reductase (GR) and glutathione S-transferase (GST), and the total amount of free SH groups were assessed. Comparison of the experimental groups showed that indoxacarb significantly affected the activities of GST, GPx and the total amount of free SH groups, while chlorantraniliprole significantly affected the activities of SOD, CAT, GST and the total amount of free SH groups, while chlorantraniliprole+lambda cyhalothrin significantly affected the activities of CAT, GST and the total amount of free SH groups. The results show that exposure to insecticides considerably affects the antioxidative defense components of the European corn borer larvae, especially chlorantraniliprole (T2).

Dynamics of Nosema pyrausta in natural populations of the European corn borer, Ostrinia nubilalis: A six-year study

BioControl ◽  
2006 ◽  
Vol 51 (5) ◽  
pp. 627-642 ◽  
Author(s):  
Leslie C. Lewis ◽  
Douglas V. Sumerford ◽  
Lori A. Bing ◽  
Robert D. Gunnarson
Keyword(s):  
Ostrinia Nubilalis ◽  
European Corn Borer ◽  
Natural Populations ◽  
Corn Borer

EVIDENCE OF A MALE SEX PHEROMONE IN THE EUROPEAN CORN BORER, OSTRINIA NUBILALIS (HÜBNER) (LEPIDOPTERA: PYRALIDAE)

1992 ◽  
Vol 124 (1) ◽  
pp. 113-116 ◽  
Author(s):  
Lucie Royer ◽  
Jeremy N. McNeil
Keyword(s):  
Sex Pheromone ◽  
Mating System ◽  
Mating Success ◽  
Ostrinia Nubilalis ◽  
European Corn Borer ◽  
Male Pheromone ◽  
Corn Borer ◽  
Male Sex Pheromone ◽  
Lepidoptera Pyralidae ◽  
Male Sex

AbstractEuropean corn borer males have hair pencils located ventrally on the 8th sternite and these are extruded when a male approaches a calling female. The fact that (i) antennectomized females mated significantly less than both intact controls and individuals subjected to other forms of surgery, and (ii) males with hair pencils removed had a significantly lower mating success than control males, suggests that a male pheromone is involved in the mating system of the European corn borer.

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