Entomopathogenic nematodes for control of carrot weevil: efficacy and longevity in muck and mineral soils

2021 ◽  
Author(s):  
Suzanne Blatt ◽  
Mary Ruth McDonald ◽  
Julia Mlynarek
Keyword(s):  
Entomopathogenic Nematodes ◽  
Carrot Weevil ◽  
Mineral Soils

Entomopathogenic Nematodes of Thrips Thripinema spp. (Nematoda: Tylenchida: Allantonematidae)

EDIS ◽  
2017 ◽  
Vol 2017 (5) ◽  
pp. 4
Author(s):  
Danielle M. Sprague ◽  
Joseph E. Funderburk
Keyword(s):  
Life Cycle ◽  
Entomopathogenic Nematodes ◽  
Economic Importance

Originally published on the Featured Creatures Website at http://entnemdept.ufl.edu/creatures/nematode/Thripinema_spp.htm Includes: Introduction - Distribution - Life Cycle and Biology - Symptoms - Hosts and Identification - Economic Importance - Management - Selected References

The Nitrogen Status of the Mineral Soils of Florida

1959 ◽  
Vol 23 (2) ◽  
pp. 127-130 ◽  
Author(s):  
W. L. Pritchett ◽  
C. F. Eno ◽  
M. N. Malik
Keyword(s):  
Nitrogen Status ◽  
Mineral Soils

scholarly journals Response of wheat, pea, and canola to micronutrient fertilization on five contrasting prairie soils

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Noabur Rahman ◽  
Jeff Schoenau
Keyword(s):  
Foliar Application ◽  
Relative Effectiveness ◽  
Yield Response ◽  
Soil Extraction ◽  
Dominant Form ◽  
Prairie Soils ◽  
Biomass Yields ◽  
Mineral Soils ◽  
Yield Responses ◽  
Cu And Zn

Abstract A polyhouse study was conducted to evaluate the relative effectiveness of different micronutrient fertilizer formulation and application methods on wheat, pea and canola, as indicated by yield response and fate of micronutrients in contrasting mineral soils. The underlying factors controlling micronutrient bioavailability in a soil–plant system were examined using chemical and spectroscopic speciation techniques. Application of Cu significantly improved grain and straw biomass yields of wheat on two of the five soils (Ukalta and Sceptre), of which the Ukalta soil was critically Cu deficient according to soil extraction with DTPA. The deficiency problem was corrected by either soil or foliar application of Cu fertilizers. There were no significant yield responses of pea to Zn fertilization on any of the five soils. For canola, soil placement of boric acid was effective in correcting the deficiency problem in Whitefox soil, while foliar application was not. Soil extractable Cu, Zn, and B concentration in post-harvest soils were increased with soil placement of fertilizers, indicating that following crops in rotation could benefit from this application method. The chemical and XANES spectroscopic speciation indicates that carbonate associated is the dominant form of Cu and Zn in prairie soils, where chemisorption to carbonates is likely the major process that determines the fate of added Cu and Zn fertilizer.

Effectiveness of Entomopathogenic Nematodes Against Ceratitis capitata (Diptera: Tephritidae) Pupae and Nematode Compatibility with Chemical Insecticides

2021 ◽  
Author(s):  
Maguintontz Cedney Jean-Baptiste ◽  
Andressa Lima de Brida ◽  
Daniel Bernardi ◽  
Sérgio da Costa Dias ◽  
Juliano de Bastos Pazini ◽  
...  
Keyword(s):  
Biological Control ◽  
Entomopathogenic Nematodes ◽  
Ceratitis Capitata ◽  
Integrated Management ◽  
Fruit Fly ◽  
Steinernema Carpocapsae ◽  
Mediterranean Fruit Fly ◽  
Fruit Crops ◽  
Class 1 ◽  
Pupal Mortality

Abstract The Mediterranean fruit fly Ceratitis capitata (Wiedemann, 1824) (Diptera: Tephritidae) is among the main pests of fruit crops worldwide. Biological control using entomopathogenic nematodes (EPNs) may be an alternative to suppress populations of this pest. Thus, the aim of this study was to evaluate the pathogenicity and virulence of six EPN isolates (Heterorhabditis bacteriophora HB, H. amazonensis IBCB-n24, Steinernema carpocapsae IBCB-n02, S. rarum PAM-25, S. glaseri IBCB-n47, and S. brazilense IBCB-n06) against C. capitata pupae. The compatibility of EPNs with different chemical insecticides that are registered for management of C. capitata was also assessed. Isolates of H. bacteriophora HB and S. brazilense IBCB-n06 at a concentration of 1,000 infective juveniles (IJ)/ml proved to be most pathogenic to C. capitata (70 and 80% mortality, respectively). In contrast, the isolates H. amazonensis IBCB-n24, Steinernema carpocapsae IBCB-n02, S. rarum PAM-25, S. glaseri IBCB-n47 provided pupal mortality of less than 60%. Bioassays to determine lethal concentrations indicated that concentrations of 600 IJ/ml (H. bacteriophora HB) and 1,000 IJ/ml (S. brazilense IBCB-n06) showed the highest virulence against C. capitata pupae. In contrast, the highest numbers of IJs emerged at concentrations of 1,200 and 200 IJ/ml. In compatibility bioassays, malathion, spinetoram, phosmet, acetamiprid, and novaluron were considered compatible with and harmless (Class 1) to H. bacteriophora HB and S. brazilense IBCB-n06, according to IOBC/WPRS. This information is important for implementing integrated management programs for C. capitata, using biological control with EPNs, whether alone or in combination with chemical insecticides.

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