Sugarcane Aphid Population Growth, Plant Injury, and Natural Enemies on Selected Grain Sorghum Hybrids in Texas and Louisiana

2017 ◽  
Vol 110 (5) ◽  
pp. 2109-2118 ◽  
Author(s):  
Michael J Brewer ◽  
John W Gordy ◽  
David L Kerns ◽  
James B Woolley ◽  
William L Rooney ◽  
...  
Keyword(s):  
Population Growth ◽  
Natural Enemies ◽  
Grain Sorghum ◽  
Aphid Population ◽  
Sugarcane Aphid ◽  
Plant Injury

Natural enemies and their impact on Diuraphis noxia (Mordvilko) (Hemiptera: Aphididae) populations

1988 ◽  
Vol 78 (1) ◽  
pp. 111-120 ◽  
Author(s):  
Y. K. Aalbersberg ◽  
M. C. Van Der Westhuizen ◽  
P. H. Hewitt
Keyword(s):  
Population Growth ◽  
Natural Enemies ◽  
Inhibitory Effect ◽  
Diuraphis Noxia ◽  
Diaeretiella Rapae ◽  
Aphid Population ◽  
Logarithmic Phase ◽  
Functional Responses ◽  
Aphidius Colemani ◽  
Economic Injury

AbstractThe influence of natural enemies on the population growth of Diuraphis noxia (Mordvilko) in wheat fields in eastern South Africa was investigated. Since the natural enemies were not present in the initial stages, the apparent mortality observed must have been due to other causes. During the logarithmic phase of aphid population growth, predators, in particular the coccinellid Hippodamia variegata (Goeze), had a slight inhibitory effect on growth. During the decline phase of the aphid population, the potential population size was reduced by as much as 52% by predation. The most abundant parasitoids, Aphidius colemani Viereck and Diaeretiella rapae (M'Intosh), had a negligible effect. Although natural enemy populations showed functional responses to increases in Diuraphis noxia numbers, they did not prevent the latter from attaining and exceeding economic injury levels.

Evaluation of Tactics for Management of Sugarcane Aphid (Hemiptera: Aphididae) in Grain Sorghum

2019 ◽  
Vol 112 (6) ◽  
pp. 2719-2730 ◽  
Author(s):  
Phillip J Haar ◽  
G David Buntin ◽  
Alana Jacobson ◽  
Adrian Pekarcik ◽  
M O Way ◽  
...  
Keyword(s):  
Seed Treatment ◽  
Yield Loss ◽  
Foliar Application ◽  
Integrated Approach ◽  
Grain Sorghum ◽  
Planting Date ◽  
Resistant Variety ◽  
Melanaphis Sacchari ◽  
Sugarcane Aphid ◽  
Plant Injury

Abstract The invasive sugarcane aphid, Melanaphis sacchari (Zehntner), is a devastating new pest of grain sorghum. Studies were conducted utilizing an integrated approach of four management tactics: planting date, insecticidal seed treatment, a foliar-applied insecticide, and plant resistance. Experiments were conducted in 2016 and 2017 at Griffin, Tifton, and Plains Georgia, and in 2016 in Texas, Alabama, and Oklahoma, United States. Early planting was effective in reducing damage and increasing yields when compared to the late planting. Use of a resistant variety reduced cumulative aphid-days, plant injury and usually prevented significant yield loss. Foliar application of flupyradifurone when aphids reached an economic threshold, was an effective management tactic preventing aphid injury and yield loss. Use of clothianidin seed treatment also reduced aphid injury and yield loss of the susceptible hybrid but generally did not prevent injury and yield loss of the resistant hybrid. We conclude that an earlier planting date coupled with a resistant variety and judicious use of an efficacious foliar-applied insecticide can effectively manage sugarcane aphid on grain sorghum. An insecticide seed treatment also may be useful to reduce the risk of sugarcane aphid damage to seedlings of susceptible hybrids.

BIOEFFICACY OF PLANT EXTRACTS AGAINST MUSTARD APHID AND THEIR NATURAL ENEMIES

2019 ◽  
Vol 25 (1) ◽  
Author(s):  
NARENDRA SINGH ◽  
N. S. BHADAURIA ◽  
PRADYUMN SINGH
Keyword(s):  
Plant Extracts ◽  
Natural Enemies ◽  
Untreated Control ◽  
Plant Material ◽  
Aphid Population ◽  
College Of Agriculture ◽  
Mustard Aphid ◽  
Plant Materials

The Bio-efficacy of eleven plant extracts namely viz.Neem Kernel; Rhizome of Ginger; Leaves of Datura, Gajarghas, Harsingar, Oak and Latjeera; Bulb of Garlic and Onion; Flowers of Chrysenthemum and Fruits of Chilli in the concentration of 5 percent and imidacloprid @ 40 g ai/ha was tested against mustard aphid, Lipaphiserysimi and their effect on D. rapae and Coccinellid beetle were tested in the Department of Entomology, College of Agriculture, Gwalior (M.P.). All the tested plant materials and imidacloprid @ 40 g ai/ha were effective significanty in reducing the aphid population over control.The aphid population in treated plots ranged from 7.2 to 40.0 as against 85.4 aphid/twig in untreated control. Among the plant material, three sprays of Neem Kernel were found most effective followed by three sprays of chilli fruits.All the plant extracts were found significantly safer to D. rapae and coccinellid bettle in comparision to insecticide (imidacloprid).

scholarly journals Comparative Transcriptome Analysis Reveals Genetic Mechanisms of Sugarcane Aphid Resistance in Grain Sorghum

2021 ◽  
Vol 22 (13) ◽  
pp. 7129
Author(s):  
Desalegn D. Serba ◽  
Xiaoxi Meng ◽  
James Schnable ◽  
Elfadil Bashir ◽  
J. P. Michaud ◽  
...  
Keyword(s):  
Differential Expression ◽  
Molecular Mechanisms ◽  
Grain Sorghum ◽  
Lipid Binding ◽  
Multiple Time ◽  
Melanaphis Sacchari ◽  
Resistant Genotype ◽  
Sugarcane Aphid ◽  
Genetic Mechanisms ◽  
Moderately Resistant

The sugarcane aphid, Melanaphis sacchari (Zehntner) (Hemiptera: Aphididae) (SCA), has become a major pest of grain sorghum since its appearance in the USA. Several grain sorghum parental lines are moderately resistant to the SCA. However, the molecular and genetic mechanisms underlying this resistance are poorly understood, which has constrained breeding for improved resistance. RNA-Seq was used to conduct transcriptomics analysis on a moderately resistant genotype (TAM428) and a susceptible genotype (Tx2737) to elucidate the molecular mechanisms underlying resistance. Differential expression analysis revealed differences in transcriptomic profile between the two genotypes at multiple time points after infestation by SCA. Six gene clusters had differential expression during SCA infestation. Gene ontology enrichment and cluster analysis of genes differentially expressed after SCA infestation revealed consistent upregulation of genes controlling protein and lipid binding, cellular catabolic processes, transcription initiation, and autophagy in the resistant genotype. Genes regulating responses to external stimuli and stress, cell communication, and transferase activities, were all upregulated in later stages of infestation. On the other hand, expression of genes controlling cell cycle and nuclear division were reduced after SCA infestation in the resistant genotype. These results indicate that different classes of genes, including stress response genes and transcription factors, are responsible for countering the physiological effects of SCA infestation in resistant sorghum plants.

scholarly journals Greenhouse Evaluation of Insecticides for Control of Yellow Sugarcane Aphid and Greenbug on Sorghum Seedlings, 1994

1995 ◽  
Vol 20 (1) ◽  
pp. 230-230
Author(s):  
R. M. Anderson ◽  
G. L. Teetes
Keyword(s):  
Grain Sorghum ◽  
Hollow Cone ◽  
Soil Mixture ◽  
Insecticide Application ◽  
Sugarcane Aphid ◽  
Greenhouse Evaluation ◽  
Seedling Plant ◽  
Plant Emergence ◽  
Spray Volume ◽  
Pre Treatment

Abstract Foliar treatments of 2 organophosphates and imidachloprid (Confidor) were evaluated for yellow sugarcane aphid (YSA) and greenbug (GB) control in a research greenhouse at Texas A&M University. Hybrid grain sorghum seedlings (ATx399 × RTx430) were grown in 110-mm germination pots containing a prepared soil mixture composed of peat, vermiculite, and periite in a 2:1:1 ratio, respectively. Four days after plant emergence and 3 d prior to insecticide applications, each seedling plant was infested with 10-20 YSA or GB. There were 5 singleseedling replications for each treatment. Insecticides were applied by using a CO2-pressurized backpack sprayer, through TX-3 hollow-cone nozzles at 35 psi, producing a finished spray volume of 5.6 gpa. Pre-treatment counts of YSA and GB were made the day of insecticide application; post-treatment counts of aphids were made 1, 2, and 3 DAT. Percent control was calculated by using Abbott’s (1925) formula. Data were statistically analyzed by using ANOVA and LSD.

scholarly journals Evaluation of Insecticides for Control of the Sugarcane Aphid in Grain Sorghum, 2014: Table 1

2015 ◽  
Vol 40 (1) ◽  
pp. F5 ◽  
Author(s):  
J. M. Beuzelin ◽  
D. M. May
Keyword(s):  
Grain Sorghum ◽  
Sugarcane Aphid

Recruitment of Natural Enemies of the Invasive Sugarcane Aphid Vary Spatially and Temporally in Sorghum Fields in the Southern Great Plains of the USA

2021 ◽  
Vol 46 (2) ◽  
Author(s):  
Norman Elliott ◽  
Kristopher Giles ◽  
Michael Brewer ◽  
Adriana Szczepaniec ◽  
Allen Knutson ◽  
...  
Keyword(s):  
Great Plains ◽  
Natural Enemies ◽  
Southern Great Plains ◽  
Sugarcane Aphid ◽  
The Usa

scholarly journals COMPARISONS OF TWO SYMMETRIC DENSITY FUNCTION SOLUTIONS OF APHID POPULATION GROWTH MODELS

2008 ◽  
Author(s):  
J. H. Matis ◽  
T. R. Kiffey ◽  
W. van der Werf ◽  
A. C. Costamagna ◽  
T. I. Matis ◽  
...  
Keyword(s):  
Population Growth ◽  
Density Function ◽  
Growth Models ◽  
Aphid Population ◽  
Symmetric Density ◽  
Population Growth Models

Natural Enemies ofMelanaphis saccharion Grain Sorghum in Northeastern Mexico

2018 ◽  
Vol 43 (1) ◽  
pp. 277-279 ◽  
Author(s):  
Luis A. Rodríguez-del-Bosque ◽  
Beatriz Rodríguez-Vélez ◽  
Mariza A. Sarmiento-Cordero ◽  
Hugo C. Arredondo-Bernal
Keyword(s):  
Natural Enemies ◽  
Grain Sorghum ◽  
Northeastern Mexico
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