Effects of Soil Moisture, Texture, and Rate of Soil Drying on Egg and Larval Survival of the Southern Corn Rootworm (Coleoptera: Chrysomelidae)

1990 ◽  
Vol 19 (3) ◽  
pp. 697-703 ◽  
Author(s):  
G. E. Brust ◽  
G. J. House
Keyword(s):  
Soil Moisture ◽  
Larval Survival ◽  
Soil Drying ◽  
Corn Rootworm ◽  
Southern Corn Rootworm

scholarly journals A Risk Index for Determining Insecticide Treatment for Southern Corn Rootworm in Peanut

1997 ◽  
Vol 24 (2) ◽  
pp. 128-134 ◽  
Author(s):  
D. A. Herbert ◽  
W. J. Petka ◽  
R. L. Brandenburg
Keyword(s):  
North Carolina ◽  
South Carolina ◽  
Risk Index ◽  
Production Costs ◽  
Corn Rootworm ◽  
Price Support ◽  
Insecticide Treatment ◽  
Field Case ◽  
Southern Corn Rootworm ◽  
The Individual

Abstract The southern corn rootworm, Diabrotica undecimpunctata howardi Barber, is a primary pest of peanut, Arachis hypogaea L., in Virginia and North Carolina and an occasional pest in South Carolina, Georgia, Alabama, and Texas. Currently, no alternatives involving integrated pest management exist for this pest, and control is based solely on preventive application of soil insecticides. Recent reductions in federal price support for peanut grown in the U.S. have provided incentives for growers to look for ways to reduce production costs. A risk index was developed that integrates factors that influence rootworm abundance and peanut pod damage to estimate levels of risk in individual peanut fields, and thus allows for more prescriptive and economical rootworm management. This index was evaluated using 44 field case studies in Virginia and North Carolina commercial peanut fields over the period 1989 to 1996. In each field case, predicted risk was compared to actual percent pod damage. Results showed that in 29 of 44 cases, the index accurately predicted general levels of risk to pod damage, and insecticide treatment decisions based on the index would have been correct in 32 of 44 cases. This report contains the individual index components, the justification for each, the indexing process, example index scenarios, and results of the process used in field case study evaluation.

Spotted Cucumber Beetle or Southern Corn Rootworm, Diabrotica undecimpunctata Mannerheim (Coleoptera: Chrysomelidae)

2008 ◽  
pp. 3519-3522
Author(s):  
John B. Heppner ◽  
David B. Richman ◽  
Steven E. Naranjo ◽  
Dale Habeck ◽  
Christopher Asaro ◽  
...  
Keyword(s):  
Corn Rootworm ◽  
Southern Corn Rootworm ◽  
Cucumber Beetle ◽  
Diabrotica Undecimpunctata ◽  
Spotted Cucumber Beetle

scholarly journals Environmental effects on efficacy of herbicides for postemergence goosegrass (Eleusine indica) control

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Avat Shekoofa ◽  
James T. Brosnan ◽  
Jose J. Vargas ◽  
Daniel P. Tuck ◽  
Matthew T. Elmore
Keyword(s):  
Soil Moisture ◽  
Environmental Effects ◽  
Vapor Pressure Deficit ◽  
Sandy Soils ◽  
Silica Sand ◽  
Soil Drying ◽  
Silt Loam ◽  
Evaporative Demand ◽  
Eleusine Indica ◽  
High Soil Moisture

AbstractExperiments were conducted to understand environmental effects on efficacy of herbicides used to control goosegrass (Eleusine indica L. Gaertn.). Herbicides were applied to goosegrass maintained at soil moisture contents (VMC) of < 12%, 12 to 20%, or > 20%. Herbicides included fenoxaprop-p-ethyl (140 g ha−1), topramezone (25 g ha−1), foramsulfuron (44 g ha−1), 2,4-D + dicamba + MCPP + carfentrazone (860 + 80 + 270 + 28 g ha−1), and thiencarbazone-methyl + foramsulfuron + halosulfuron-methyl (22 + 45 + 69 g ha−1). Goosegrass control increased as VMC increased. Vapor pressure deficit (VPD) and air temperature were manipulated to determine effects of evaporative demand on foramsulfuron. Effects of soil drying were also studied following foramsulfuron application. Reductions in transpiration rate (TR) and leaf area were greatest with foramsulfuron applications to goosegrass in silt-loam under high evaporative demand (3 kPa VPD, 38 °C). Foramsulfuron had no effect on goosegrass in silica-sand regardless of evaporative demand. TR dropped to 0.2 mmh−1 within eight days after application to goosegrass in silt-loam compared to 18 days in silica-sand. Overall, foramsulfuron efficacy on goosegrass was maximized under conditions of high soil moisture and evaporative demand, and may be reduced in sandy soils that hold less water.

scholarly journals Spotted cucumber beetle Diabrotica undecimpunctata howardi Barber (Insecta: Coleoptera: Chrysomelidae)

EDIS ◽  
2013 ◽  
Vol 2013 (9) ◽  
Author(s):  
Harsimran Kaur Gill ◽  
Gaurav Goyal ◽  
Jennifer Gillett-Kaufman
Keyword(s):  
North America ◽  
Corn Rootworm ◽  
Agricultural Pest ◽  
Fact Sheet ◽  
Field Crops ◽  
Diabrotica Undecimpunctata Howardi ◽  
Southern Corn Rootworm ◽  
Cucumber Beetle ◽  
Diabrotica Undecimpunctata ◽  
Spotted Cucumber Beetle

Spotted cucumber beetle is a major agricultural pest of North America. Another name for the spotted cucumber beetle is “southern corn rootworm”. Many Diabrotica species cause damage to field crops, especially corn, making these beetles a major agricultural concern. Because of the subterranean nature of their larvae, these insects are hard and expensive to control. This 6-page fact sheet was written by Harsimran Kaur Gill, Gaurav Goyal, and Jennifer Gillett-Kaufman, and published by the UF Department of Entomology and Nematology, September 2013. http://edis.ifas.ufl.edu/in1008

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