scholarly journals Effect of MON 810 cultivation and prevention to adventitious presence in non-GM fields: A case study in Slovakia

2012 ◽  
Vol 48 (Special Issue) ◽  
pp. S11-S15 ◽  
Author(s):  
P. Mihalčík ◽  
K. Hrčková ◽  
M. Singer ◽  
A. Plačková ◽  
J. Kraic
Keyword(s):  
European Corn Borer ◽  
Climatic Conditions ◽  
Corn Borer ◽  
Gm Maize ◽  
Growing Seasons ◽  
Isolation Distance ◽  
Adventitious Presence ◽  
Self Protection ◽  
Mon 810

The efficiency of border rows to prevent the adventitious presence of GM maize in non-GM maize plots was evaluated as well as the effect of the MON 810 maize of the yield and self-protection against the European corn borer. The GM maize MON 810 event was drilled at 3 locations over the Slovakia and the grain samples were collected from the neighbouring conventional maize fields. The data obtained by Real-Time PCR indicate that coexistence between GM and conventional maize is feasible and the isolation distance of 200 m (respectively 100 border rows of conventional maize) separates GM maize from the conventional one more than sufficiently. The effective isolation distance is 3–4 times greater than the actually needed. The MON 810 revealed also the highest yield and the best self-protection against European corn borer in both growing seasons with different climatic conditions. 

scholarly journals Maize Plants Infestation by Fusarium spp. and Deoxynivalenol in Genetically Modified Corn Hybrid and Traditional Maize Cultivars

2011 ◽  
Vol 60 (4) ◽  
pp. 317-321 ◽  
Author(s):  
MAREK SELWET
Keyword(s):  
European Corn Borer ◽  
Genetically Modified ◽  
Pathogenic Fungi ◽  
Genetically Modified Maize ◽  
Corn Borer ◽  
Maize Cultivars ◽  
Maize Plants ◽  
Maize Cob ◽  
Grain Contamination ◽  
Mon 810

The objective of the performed investigations was to isolate pathogenic fungi from contaminated maize cobs, to assess the appearance of maize cob fusariosis and to determine grain contamination with deoxynivalenol in the cultivation of genetically modified maize containing a gene resistance against European corn borer (Ostrinia nubilalis Hbn) as well as selected non-modified cultivars. The plant material comprised the following genetically modified maize cultivar: DKC 3421 YG (MON 810) and non-modified cultivars obtained from Smolice Plant Breeding Ltd., IHAR Group: Junak (FAO 210-220), Prosna (FAO 220), SMH (FAO 230), Baca (FAO 220). Prior to harvesting, the occurrence of maize cob fusariosis was determined in the 89 (BBCH) developmental ripening stage. Microbiological assessment was carried out on grains selected from cobs characterized by various pathological symptoms. In 2008, a total of 133 isolates was obtained from the examined samples of infected maize plants, of which 51 isolates were species-identified, while in 2009, the total of 123 isolates were determined, of which 63 were species-identified. In both experimental years, the majority of isolates contained fungi from the Fusarium genus. The performed analysis of mean levels of cob contamination by fusarioses revealed that DKC 3421 YG (MON 810) and SMH (FAO 230) cultivars showed the smallest levels of contamination as well as the lowest percent of cob contamination per plant, while Junak (FAO 210-220) and Baca (FAO 220) cultivars were characterized by the highest degree of contamination. The lowest deoxynivalenol concentrations were determined in years 2008 and 2009 in the case of the DKC 3421 YG (MON 810) cultivar, whereas Prosna (FAO 220) cultivar was characterized by the highest deoxynivalenol concentration.

Meeting the Tolerance: How Successful is Coexistence in Commodity Corn Handling Systems?

2020 ◽  
Vol 36 (5) ◽  
pp. 777-784
Author(s):  
Chad J. Dolphin ◽  
Gretchen A. Mosher ◽  
R.P. Kingsly Ambrose ◽  
Saxon J. Ryan
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Genetically Modified ◽  
List Type ◽  
Genetic Traits ◽  
Tolerance Level ◽  
Gm Maize ◽  
Isolation Distance ◽  
Adventitious Presence ◽  
Handling Practices

HighlightsMeeting the 0.9% tolerance level was challenging under most conditions.Non-GM loads in the simulation were able to meet a 1.5% or 3% tolerance level under specific conditions.Field isolation distance plays a large role in a non-GM load meeting the posted tolerance levelAbstract. The open-air growth environment used in maize production makes it nearly impossible to ensure 100% purity of specified genetic traits. One measure of successful coexistence is a low level of unintended material in seed, grain, and feed or food products, termed “adventitious presence” (AP). To allow the coexistence of genetically modified (GM) and non-genetically modified (non-GM) maize, tolerance levels regulate how much AP of genetically modified corn is allowed in each unit of maize. This research sought to model four factors contributing to levels of adventitious presence: seed purity, field isolation distance, combine cleanout, and grain elevator receipt and handling practices. Monte Carlo simulation was used to test nine scenarios to determine the feasibility of successfully meeting three tolerance levels for adventitious presence (0.9%, 1.5%, and 3.0%). After 50,000 iterations for each model, sensitivity analysis was performed to identify factors that play an important role in whether the load meets the posted tolerance level or not. Results suggest that non-GM maize loads would not meet a tolerance level of 0.9% in most cases. Non-GM maize loads were found to meet tolerance levels of 1.5% and 3.0% in certain cases. The most significant factors affecting the probability of the unit of maize meeting the posted tolerance level were field isolation distance, elevator handling practices, and seed purity. Keywords: Adventitious presence, Coexistence, Identity preservation, Monte Carlo simulation, Transgenic grain.

scholarly journals Research on the Relationship Between the Degree of European Corn Borer (Ostrinia Nubilalis Hbn.) Attack and Maize Fusariosis (Fusarium spp.) at ARDS Turda

2017 ◽  
Vol 74 (1) ◽  
pp. 57
Author(s):  
Ana Maria VĂLEAN ◽  
Felicia MUREŞANU ◽  
Adina TĂRĂU ◽  
Loredana SUCIU ◽  
Laura SOPTEREAN ◽  
...  
Keyword(s):  
Ostrinia Nubilalis ◽  
European Corn Borer ◽  
Climatic Conditions ◽  
Point Of View ◽  
Fusarium Spp ◽  
Maize Production ◽  
Corn Borer ◽  
Economic Point ◽  
Growing Period ◽  
Important Pest

The European corn borer (Ostrinia nubilalis Hübn.), which is found almost universally in Europe and America, is an extremely important pest from economic point of view (Szőke et al., 2005). European corn borer larvae cause physical injuries to stalks and ears, and promote infections with Fusarium, by carrying the fungus spores from the plant surface to the surfaces of damaged kernels or to the interior of stalks, where infection occurs (Czembor, 2015). On account of the fact that between Ostrinia nubilalis Hbn. and Fusarium spp. there is a strong connection, and their presence lead to lower maize production, it’s purposed is reducing the corn borer attack, but also the occurrence of maize fusariosis, by applying treatments to the vegetation. The research was carried out at ARDS Turda, in the period 2014-2015 as a bifactorial experience, in which were performed two treatments on growing period, with insecticides, using the products: Avaunt 250 ml/ha (s.a. indoxacarb), Coragen 250 ml/ha (s.a. chlorantraniliprol), Proteus 400 ml/ha (s.a. tiacloprid + deltametrin), Calypso 150 ml/ha (s.a. tiacloprid) and Confidor 400 ml/ha (s.a. imidacloprid + deltametrin), and the biological material was used Turda 165 hybrid. Amid the climatic conditions in the two experimental years (2014-2015), regarding the frecquency attack of the Ostrinia nubilalis, 2015 proved to be a very favorable year for this pest, and by applying treatments to the vegetation, Ostrinia nubilalis Hbn. and Fusarium spp. attack has been reduced very significant. In order to combat the european corn borer (Ostrinia nubilalis Hbn.) chemically, are recommended products based on: chlorantraniliprol and tiacloprid+deltametrin.

scholarly journals Diversity of carabid beetles (Coleoptera: Carabidae) under three different control strategies against European corn borer in maize

2013 ◽  
Vol 49 (No. 3) ◽  
pp. 146-153 ◽  
Author(s):  
F. Kocourek ◽  
P. Saska ◽  
M. Řezáč
Keyword(s):  
European Corn Borer ◽  
Control Strategies ◽  
Carabid Beetles ◽  
Bt Maize ◽  
Corn Borer ◽  
Focal Treatment ◽  
Cropping Seasons ◽  
The Impact ◽  
Insect Resistant ◽  
Mon 810

We compared three control strategies against European corn borer (Ostrinia nubilalis Hubner) in maize with respect to carabid beetles, beneficial epigeal arthropods. The impact of the focal treatment (insect resistant Bt maize MON 810) was compared with conventionally farmed and Trichogramma-treated plots at two sites (Prague-Ruzyně and Ivanovice na Hané) in the Czech Republic, replicated in three cropping seasons (2002–2004). The sampled assemblages were species-poor. The species were unevenly distributed in terms of their catch size – the communities were dominated by 7 (Ruzyně) or 3 (Ivanovice) species. No differences were found in species richness or species composition between treatments, seasons or sites, suggesting no effect of planting transgenic insect resistant Bt maize MON 810 on the assemblages of carabid beetles in the study fields.  

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