PP 1/323 (1) Evaluation of mating disruption techniques against Lepidopteran pests in grapevine, pome and stone fruits under semi‐field conditions

EPPO Bulletin ◽  
2020 ◽  
Keyword(s):  
Mating Disruption ◽  
Field Conditions ◽  
Stone Fruits ◽  
Lepidopteran Pests

Performance of Genetically Modified Soybean Expressing the Cry1A.105, Cry2Ab2, and Cry1Ac Proteins Against Key Lepidopteran Pests in Brazil

2020 ◽  
Vol 113 (6) ◽  
pp. 2883-2889
Author(s):  
Fabiana B Bacalhau ◽  
Patrick M Dourado ◽  
Renato J Horikoshi ◽  
Renato A Carvalho ◽  
Altair Semeão ◽  
...  
Keyword(s):  
Genetically Modified ◽  
Leaf Disc ◽  
Field Studies ◽  
Field Conditions ◽  
Anticarsia Gemmatalis ◽  
Genetically Modified Soybean ◽  
Lepidopteran Pests ◽  
Highly Effective ◽  
The Individual ◽  
Gm Soybean

Abstract The pyramided genetically modified (GM) soybean [Glycine max L. (Merr.)] MON87751 × MON87708 × MON87701 × MON89788, expressing Cry1A.105, Cry2Ab2, and Cry1Ac from Bacillus thuringiensis Berliner, was approved for commercial use in Brazil. We conducted laboratory, greenhouse, and field studies to assess the efficacy of this Bt soybean against key soybean lepidopteran pests. Neonates of Anticarsia gemmatalis (Hübner) (Lepidoptera: Erebidae), Chrysodeixis includens (Walker), and Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae) were exposed to Bt proteins in diet-overlay bioassays. MON87751 × MON87708 × MON87701 × MON89788 soybean and individual components were evaluated in laboratory (leaf disc), greenhouse (high artificial infestations), and in field conditions (natural infestations). Neonates of A. gemmatalis, C. includens, and H. armigera were highly susceptible to Cry1A.105 (LC50 from 0.79 to 48.22 ng/cm2), Cry2Ab2 (LC50 from 1.24 to 8.36 ng/cm2), and Cry1Ac (LC50 from 0.15 to 5.07 ng/cm2) in diet-overlay bioassays. In laboratory leaf disc bioassays and greenhouse trials, MON87751 × MON87708 × MON87701 × MON89788 soybean as well as the individual components were highly effective in controlling A. gemmatalis, C. includens, and H. armigera. Similarly, under field conditions, the pyramided genotypes expressing Cry1A.105, Cry2Ab2, and Cry1Ac were highly effective at protecting soybean against C. includens. We concluded that the individual Bt proteins expressed by GM soybean MON87751 × MON87708 × MON87701 × MON89788 killed all or nearly all the susceptible A. gemmatalis, C. includens, and H. armigera, fulfilling one important criterion for successfully delaying resistance to pyramided Bt crops.

Behavioural observations of mating disruption in three lepidopteran pests

Behaviour ◽  
2005 ◽  
Vol 142 (6) ◽  
pp. 717-729 ◽  
Author(s):  
David M. Suckling ◽  
Ashraf M. El-Sayed
Keyword(s):  
Mating Disruption ◽  
Lepidopteran Pests

scholarly journals Efficacy of Soybean’s Event DAS-81419-2 Expressing Cry1F and Cry1Ac to Manage Key Tropical Lepidopteran Pests Under Field Conditions in Brazil

2016 ◽  
Vol 109 (4) ◽  
pp. 1922-1928 ◽  
Author(s):  
L. H. Marques ◽  
B. A. Castro ◽  
J. Rossetto ◽  
O. A. B. N. Silva ◽  
V. F. Moscardini ◽  
...  
Keyword(s):  
Field Conditions ◽  
Lepidopteran Pests

A MODIFIED LIVE-TRAP FOR ASSESSING MATING DISRUPTION OF MICROLEPIDOPTERA

1993 ◽  
Vol 125 (6) ◽  
pp. 1135-1136 ◽  
Author(s):  
Sheila M. Fitzpatrick ◽  
James T. Troubridge
Keyword(s):  
Indirect Method ◽  
Mating Disruption ◽  
Direct Methods ◽  
Field Studies ◽  
Mate Location ◽  
Sticky Traps ◽  
Lepidopteran Pests ◽  
Synthetic Pheromone ◽  
Live Trap ◽  
Number Of Males

In field studies of pheromone-mediated mating disruption of lepidopteran pests, there are several ways to determine if mate location has been disrupted. One indirect method is to count the number of males caught in sticky traps baited with synthetic pheromone. A reduced catch in pheromone-treated plots relative to control plots shows that males were unable to find the source of synthetic pheromone and suggests that mating has been disrupted. More direct methods are: (1) to count the number of males attracted to sticky traps baited with virgin females; or (2) to assess the incidence of mating of (a) feral females collected in light-, bait- or other traps, (b) females caged with males in pheromone-treated areas, or (c) virgin females placed in the field and later retrieved. Females may be tethered with thread to non-sticky traps or partially dealated and placed on a “mating table” from which they cannot escape.

Mating Disruption as a Suppression Tactic in Programs Targeting Regulated Lepidopteran Pests in US

2016 ◽  
Vol 42 (7) ◽  
pp. 590-605 ◽  
Author(s):  
David R. Lance ◽  
Donna S. Leonard ◽  
Victor C. Mastro ◽  
Michelle L. Walters
Keyword(s):  
Mating Disruption ◽  
Lepidopteran Pests

ASSESSMENT OF THE WINTER HARDINESS OF THE CHERRY TREES REPRODUCTIVE BUDS IN FIELD CONDITIONS

1970 ◽  
pp. 18-21
Author(s):  
А. А. Gulyaeva ◽  
I. N. Efremov ◽  
Е. V. Bezlepkina
Keyword(s):  
Cross Sections ◽  
Sour Cherry ◽  
Winter Hardiness ◽  
Field Conditions ◽  
Stone Fruits ◽  
Flower Buds ◽  
Average Percentage ◽  
The Third ◽  
Winter Conditions ◽  
Almost All

This article presents the results of two years of research on the degree of resistance of generative buds of sour cherry varieties to adverse winter conditions in the field. The obtained results allow us to say that almost all the examined varieties were characterized by an increased degree of winter hardiness. The overwhelming majority of varieties, selected and elite seedlings were included in the first group of resistance by winter hardiness of generative buds, since their average percentage of damage to the buds by frost did not exceed 10% in two years. A few more varieties were assigned to the second resistance group and had damage at the level of 10-25%. Some varieties were assigned to the third and fourth categories of winter hardiness (25-50% and 50-75%, respectively). In the last, fifth group, in which the varieties with damage to flower buds at the level of 75-100% should be located, not one of the studied varieties was assigned. The studies were carried out at the experimental fields of the RRIFCB laboratory of breeding and cultivar studying of stone fruits. For study, 8 varieties and 4 selective and elite forms of cherry 2011 planting and 11 varieties 2015 planting were taken as objects of study. The degree of damage to the buds and tissues was assessed in the second decade of March 2018 - 2019 after the completion of the growth of 1 ... 2-year-old branches as the stage of passage of dangerous frosts was completed. Freezing of wood and core was assessed visually under a magnifying glass on cross sections of shoots according to the intensity of browning of tissues (from light to dark brown) with scores from 0 to 5.

Influence of mating disruption on the reproductive biology of the vine mealybug, Planococcus ficus (Hemiptera: Pseudococcidae), under field conditions

2018 ◽  
Vol 74 (12) ◽  
pp. 2806-2816 ◽  
Author(s):  
Arturo Cocco ◽  
Enrico Muscas ◽  
Alessandra Mura ◽  
Andrea Iodice ◽  
Francesco Savino ◽  
...  
Keyword(s):  
Reproductive Biology ◽  
Mating Disruption ◽  
Field Conditions ◽  
Planococcus Ficus ◽  
Vine Mealybug
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