Effectiveness of Acephate and Carbofuran Seed Treatments to Control the Black Cutworm, Agrotis ipsilon (Lepidoptera: Noctuidae), on Field Corn

1985 ◽  
Vol 78 (6) ◽  
pp. 1415-1420 ◽  
Author(s):  
Eli Levine ◽  
Allan Felsot
1992 ◽  
Vol 27 (4) ◽  
pp. 427-435 ◽  
Author(s):  
Eli Levine ◽  
Hassan Oloumi-Sadeghi

An entomopathogenic nematode, Steinernema carpocapsae (Weiser) All strain (BioVector®), applied at two rates (1.25 and 2.5 × 109 nematodes/ha) was compared with several registered insecticides for controlling black cutworm, Agrotis ipsilon (Hufnagel) (Lepidoptera: Noctuidae), larvae during the 1991 growing season in Illinois. Fonofos, tefluthrin and chlorpyrifos were applied at planting time; permethrin and the two rates of nematodes were applied as postemergence rescue treatments. The nematodes generally performed as well as or better than the conventional insecticides in controlling black cutworm larval injury to seedling corn. Bioassays with black cutworm larvae showed that nematode efficacy was lost 8 days after application in the field. Entomopathogenic nematodes hold promise for controlling black cutworms in corn, particularly for corn grown under irrigation.


1980 ◽  
Vol 112 (7) ◽  
pp. 665-673 ◽  
Author(s):  
T. L. Archer ◽  
G. L. Musick ◽  
R. L. Murray

AbstractInfluence of temperature and moisture on black cutworm, Agrotis ipsilon (Hufnagel), development and reproduction was studied on field corn. The black cutworm spends portions of its life above and below soil, consequently influence of temperature and soil moisture and temperature and relative humidity (R.H.) was determined. Temperatures of 34°, 27°, and 20°C were used with 18%, 24%, and 30% soil moisture and with 40%, 60%, and 80% R.H. In addition, a treatment of 13 °C and 60% R.H. was included.Temperature was the only factor influencing development of all stages, with 27°C the optimum temperature studied. Soil moisture did not influence larval development, but relative humidity affected the first five instars. Larvae required from 6 to 9 instars to complete development, with temperature and relative humidity affecting the number of molts. Head capsule measurements varied depending on the number of molts required for development. Fecundity was greatest at 27° and 20°C, and at 60% and 80% R.H. The optimum treatment for reproduction and adult survival was 20°C and 80% R.H. Many females failed to lay fertile eggs at 34° and 13°C.


2021 ◽  
Vol 12 ◽  
Author(s):  
Tong Li ◽  
Ruobing Guan ◽  
Yuqing Wu ◽  
Su Chen ◽  
Guohui Yuan ◽  
...  

In the present study, we identified a novel, positive-sense single-stranded RNA virus in the Chinese black cutworm, Agrotis ipsilon. It has a genome length of 11,312 nucleotides, excluding the poly(A) tails, and contains five open reading frames. The ORF2 encodes the conserved domains of RNA helicase and RNA-dependent RNA polymerase, while ORF4 and 5 encode three viral proteins. Herein, the A. ipsilon virus was clustered with a Helicoverpa armigera Nora virus and was thus provisionally named “Agrotis ipsilon Nora virus” (AINV). AINV was successfully transmitted into a novel host, Spodoptera frugiperda, through injection, causing a stable infection. This found the possibility of horizontal AINV transmission among moths belonging to the same taxonomic family. Nonetheless, AINV infection was deleterious to S. frugiperda and mainly mediated by antiviral and amino acid metabolism-related pathways. Furthermore, the infection significantly increased the S. frugiperda larval period but significantly reduced its moth eclosion rate. It suggests that AINV is probably to be a parasitic virus of S. frugiperda.


1990 ◽  
Vol 25 (4) ◽  
pp. 510-518 ◽  
Author(s):  
Alvin M. Simmons ◽  
Charlie E. Rogers

Moths of the fall armyworm, Spodoptera frugiperda (J. E. Smith), collected from locations extending from northern South America, the Caribbean basin, Central America, Mexico, Texas, to Florida, and Bermuda, were examined for Noctuidonema guyanense Remillet and Silvain, an ectoparasitic nematode of adult Lepidoptera. Noctuidonema was recovered from all locations where the fall armyworm was collected. This parasitic nematode was previously only known to occur in French Guiana and Guadeloupe. Parasitism was generally around 35%, but was variable at different locations ranging from nearly 0% to about 90%. Although the number of nematodes per moth varied among locations, mean infestation ranged from 30 to 40 specimens per host. Noctuidonema also was recovered from the black cutworm, Agrotis ipsilon (Hufnagel), a host on which it previously had not been known to occur.


2013 ◽  
Vol 93 (1) ◽  
pp. 43-46 ◽  
Author(s):  
Guy Bélair ◽  
Louis Simard ◽  
Julie Dionne

The virulence of ten indigenous and two commercial isolates of entomopathogenic nematodes against the black cutworm, Agrotis ipsilon, was assessed under laboratory conditions. When comparing commercial isolates, Steinernema carpocapsae exhibited higher virulence than S. feltiae. One indigenous isolate of S. carpocapsae (6Sc) provided similar or higher virulence than the commercial isolate against black cutworm larvae. An indigenous strain of S. kraussei demonstrated low virulence in our study.


2006 ◽  
Vol 99 (4) ◽  
pp. 1129-1137 ◽  
Author(s):  
Callie A. Prater ◽  
Carl T. Redmond ◽  
Walter Barney ◽  
Bryony C. Bonning ◽  
Daniel A. Potter

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