Influence of Soil Texture, Soil Moisture, Organic Cover, and Weeds on Oviposition Preference of Southern Corn Rootworm (Coleoptera: Chrysomelidae)

1990 ◽  
Vol 19 (4) ◽  
pp. 966-971 ◽  
Author(s):  
G. E. Brust ◽  
G. J. House
Keyword(s):  
Soil Moisture ◽  
Soil Texture ◽  
Oviposition Preference ◽  
Corn Rootworm ◽  
Southern Corn Rootworm

INFLUENCE OF SOIL TYPE, SOIL MOISTURE, AND SOIL SURFACE CONDITIONS ON OVIPOSITION PREFERENCE OF THE NORTHERN CORN ROOTWORM, DIABROTICA LONGICORNIS (COLEOPTERA: CHRYSOMELIDAE)

1983 ◽  
Vol 115 (8) ◽  
pp. 1043-1046 ◽  
Author(s):  
C. R. Dominique ◽  
W. N. Yule ◽  
P. Martel
Keyword(s):  
Soil Moisture ◽  
Clay Soil ◽  
Surface Condition ◽  
Oviposition Preference ◽  
Soil Surface ◽  
Corn Rootworm ◽  
Laboratory Studies ◽  
Disturbed Soil ◽  
Northern Corn Rootworm ◽  
Local Farm

AbstractIn laboratory studies, ovipositing northern corn rootworm beetles significantly preferred Ste. Rosalie clay soil with particles 1 mm – 1.4 cm in diameter. In the field, unaltered local farm soil with natural cracks was preferred for oviposition to mechanically-disturbed soil. Surface condition, surface cover, and soil moisture all combined to influence the choice of oviposition site in field soils.

scholarly journals A soil moisture accounting-procedure with a Richards' equation-based soil texture-dependent parameterization

2015 ◽  
Vol 51 (1) ◽  
pp. 506-523 ◽  
Author(s):  
Simon A. Mathias ◽  
Todd H. Skaggs ◽  
Simon A. Quinn ◽  
Sorcha N. C. Egan ◽  
Lucy E. Finch ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Soil Texture ◽  
Richards Equation ◽  
Soil Moisture Accounting ◽  
Accounting Procedure

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.

A generally applicable pedotransfer function that estimates field capacity and permanent wilting point from soil texture and bulk density

2008 ◽  
Vol 88 (5) ◽  
pp. 761-774 ◽  
Author(s):  
J. A. P. Pollacco
Keyword(s):  
Organic Matter ◽  
Soil Moisture ◽  
Bulk Density ◽  
Soil Texture ◽  
The United States ◽  
Pedotransfer Functions ◽  
Pedotransfer Function ◽  
Data Set ◽  
Wide Range ◽  
Fitting Parameters

Hydrological models require the determination of fitting parameters that are tedious and time consuming to acquire. A rapid alternative method of estimating the fitting parameters is to use pedotransfer functions. This paper proposes a reliable method to estimate soil moisture at -33 and -1500 kPa from soil texture and bulk density. This method reduces the saturated moisture content by multiplying it with two non-linear functions depending on sand and clay contents. The novel pedotransfer function has no restrictions on the range of the texture predictors and gives reasonable predictions for soils with bulk density that varies from 0.25 to 2.16 g cm-3. These pedotransfer functions require only five parameters for each pressure head. It is generally accepted that the introduction of organic matter as a predictor improves the outcomes; however it was found by using a porosity based pedotransfer model, using organic matter as a predictor only modestly improves the accuracy. The model was developed employing 18 559 samples from the IGBP-DIS soil data set for pedotransfer function development (Data and Information System of the International Geosphere Biosphere Programme) database that embodies all major soils across the United States of America. The function is reliable and performs well for a wide range of soils occurring in very dry to very wet climates. Climatical grouping of the IGBP-DIS soils was proposed (aquic, tropical, cryic, aridic), but the results show that only tropical soils require specific grouping. Among many other different non-climatical soil groups tested, only humic and vitric soils were found to require specific grouping. The reliability of the pedotransfer function was further demonstrated with an independent database from Northern Italy having heterogeneous soils, and was found to be comparable or better than the accuracy of other pedotransfer functions found in the literature. Key words: Pedotransfer functions, soil moisture, soil texture, bulk density, organic matter, grouping

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
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