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Full-Text Articles in Life Sciences
Biocontrol Agents Applied Individually And In Combination For Suppression Of Soilborne Diseases Of Cucumber, Daniel P. Roberts, Scott M. Lohrke, Susan L. F. Meyer, Jeffry S. Buyer, John H. Bowers, C. Jacyn Baker, Wei Li, Jorge T. De Souza, Jack A. Lewis, Soohee Chung
Biocontrol Agents Applied Individually And In Combination For Suppression Of Soilborne Diseases Of Cucumber, Daniel P. Roberts, Scott M. Lohrke, Susan L. F. Meyer, Jeffry S. Buyer, John H. Bowers, C. Jacyn Baker, Wei Li, Jorge T. De Souza, Jack A. Lewis, Soohee Chung
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
The soilborne pathogens Rhizoctonia solani, Pythium ultimum, and Meloidogyne incognita can cause severe economic losses to field- and greenhouse-grown cucumber. A collection of bacterial isolates and isolates GL3 and GL21 of Trichoderma virens were screened for suppression of diseases caused by these pathogens. T. virens isolates GL3 and GL21 provided the most effective suppression of damping-off caused by R. solani in greenhouse bioassays. Burkholderia ambifaria BC-F, B. cepacia BC-1, and Serratia marcescens N1-14 also provided significant suppression of R. solani relative to the pathogen check in some experiments. T. virens isolates GL3 and GL21 and S. marcescens isolates …
Risk And Ethics In Biological Control, Ernest S. Delfosse
Risk And Ethics In Biological Control, Ernest S. Delfosse
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
All introduced natural enemies present a degree of risk to nontarget species. Since most biological control programs use relatively host-specific natural enemies, the risk to nontarget species is generally very low, particularly from biological control of weeds, which uses extensively tested and validated host-specificity testing procedures to predict risk. However, many of the published comments about risks of biological control are superficial or misleading, often inappropriately lumping risk from all taxa of agents as “the risk of biological control,” and ignore the potential benefits, rather than dealing with species-by-species risk and benefits. Particularly confounding accurate predictions is the common mixing …
Herbivory Alters Resource Allocation And Compensation In The Invasive Tree Melaleuca Quinquenervia, P. D. Pratt, M. B. Rayamajhi, T. K. Van, T. D. Center, P. W. Tipping
Herbivory Alters Resource Allocation And Compensation In The Invasive Tree Melaleuca Quinquenervia, P. D. Pratt, M. B. Rayamajhi, T. K. Van, T. D. Center, P. W. Tipping
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
The Australian native Melaleuca quinquenervia is highly invasive in the Florida Everglades, U.S.A., where it experiences limited competition or herbivory from native species, making it a likely candidate for compensation. The introduced biological control agent Oxyops vitiosa feeds exclusively on the seasonal flushes of developing foliage at branch apices, which represents ~ 15% of the total foliar biomass.
From Metchnikoff To Monsanto And Beyond: The Path Of Microbial Control, Jeffrey C. Lord
From Metchnikoff To Monsanto And Beyond: The Path Of Microbial Control, Jeffrey C. Lord
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
In 125 years since Metchnikoff proposed the use of Metarhizium anisopliae to control the wheat cockchafer and brought about the first field trials, microbial control has progressed from the application of naturalists’ observations to biotechnology and precision delivery. This review highlights major milestones in its evolution and presents a perspective on its current direction. Fungal pathogens, the most eye-catching agents, dominated the early period, but major mycological control efforts for chinch bugs and citrus pests in the US had questionable success, and interest waned. The discoveries of Bacillus popilliae and Bacillus thuringiensis began the era of practical and commercially viable …
Field Assessment Of The Risk Posed By Diorhabda Elongata, A Biocontrol Agent For Control Of Saltcedar (Tamarix Spp.), To A Nontarget Plant, Frankenia Salina, Tom L. Dudley, David J. Kazmer
Field Assessment Of The Risk Posed By Diorhabda Elongata, A Biocontrol Agent For Control Of Saltcedar (Tamarix Spp.), To A Nontarget Plant, Frankenia Salina, Tom L. Dudley, David J. Kazmer
United States Department of Agriculture-Agricultural Research Service / University of Nebraska-Lincoln: Faculty Publications
The biological control program for saltcedar (Tamarix spp.) has led to open releases of a specialist beetle (Chrysomelidae: Diorhabda elongata) in several research locations, but the controversy over potential impacts to native, nontarget plants of the genus Frankenia remains unresolved. To assess the potential for nontarget impacts under Weld conditions, we installed cultivated Frankenia spp. (primarily two forms of Frankenia salina but also including Frankenia jamesii) at locations in Nevada and Wyoming where D. elongata densities and saltcedar defoliation were expected to be very high, so insects would be near starvation with high probability of attacking nontargets …