Posts Tagged: Integrated Pest Management Systems
After a successful tenure as an entomology professor and researcher at the University of Hawaii, Manoa, Marshall W. Johnson added a 10-year capstone to his career as UC Cooperative Extension specialist and research entomologist in the Department of Entomology at UC Riverside, based at the UC Kearney Agricultural Research and Extension Center. He retired at the end of June.
Johnson traces his interest in insects to a visit with a family friend on the outskirts of his hometown, Roanake, Va., when he was 10 years old. He was intrigued by a copy of “A Golden Guide to Familiar American Insects,” and the friend gave it to him. “That’s how I got started,” Johnson said. He never looked back.
Johnson earned bachelor’s and master’s degrees in entomology at North Carolina State University and in 1974 completed a Ph.D. in entomology at UC Riverside. After conducting short stints of entomological research at two locations on the mainland, he moved to Hawaii in 1983 to serve as a professor and focus his research on biological control.
In Hawaii watermelon production, Johnson was able to help farmers reduce pesticide use by 90 percent by showing that pesticide applications were killing natural enemies of a Liriomyza leafminer pest they were trying to control. He also worked on biological control of pests on cucumbers, tomatoes, green onions, pineapple, papaya and coffee.
In 1995, Johnson took a six-month sabbatical leave to UC Davis and realized how much he missed living on the mainland. He started looking for a new job and eventually was offered the combined extension and research position at his alma mater, UC Riverside, based at the off-campus research center in Parlier, Calif.
Johnson’s arrival coincided with the introduction of olive fruit fly in California, a serious pest that has devastated olive production in the Mediterranean region for more than 2,000 years. Olive fruit fly was detected in Los Angeles in 1998, and by 1999 had made its way into the San Joaquin Valley, the leading producer of the state’s olives.
To the great relief of valley olive growers, Johnson and his biological control colleague Kent Daane, UCCE specialist in the Department of Environmental Science, Policy and Management at UC Berkeley, found that hot summertime temperatures in the valley depress olive fly populations. But that didn’t provide a statewide solution.
Johnson and Daane worked together to introduce exotic natural enemies of the pest from Africa. The beneficial insects have been released from quarantine and introduced at several locations in California, with recovery of one species in the San Luis Obispo and Redwood City areas.
“We think it’s on the way to establishment. That’s a good sign,” Johnson said. “Now we're waiting to see if the parasite’s presence will have an impact on olive fly populations.”
Johnson was also involved in research that showed the Central Valley isn’t as hospitable to glassy-winged sharpshooters as other parts of the state. When it gets very cold, GWSS cannot move or feed. They either starve or get dehydrated.
“About every 2 out of 10 years, it gets cold enough in the valley that glassy-winged sharpshooter populations are reduced 90 to 95 percent,” Johnson said. “It is unlikely glassy-winged sharpshooters would ever become well established in the Sacramento Valley or the northern San Joaquin Valley. But it is well established in the Bakersfield area.”
Johnson ended his career with a video production project designed to raise awareness about integrated pest management. Posted on the website Extending Orchard IPM Knowledge in California, the videos include interviews with IPM practitioners, researchers and farmers plus overviews of specific pest control techniques, such as biological control, cultural practices and pheromones.
For his research and extension efforts, Johnson received numerous awards and honors over the years. Most recently, he was named “Distinguished Scientist of the Year,” by the International Organization for Biological Control. He is an elected fellow of both the Entomological Society of America and the American Association for the Advancement of Science. He was author or co-author of more than 200 peer-reviewed articles, book chapters, and extension publications.
During retirement, Johnson plans to spend more time pursuing the art of photography, mainly landscapes and seascapes, which he captures during travels around the United States. Johnson also plans to continue cataloging the history of the family of his mother, whose maiden name was “Marshall.” He has already traced his lineage back to a 1729 immigrant from Ireland. An earlier ancestor, a member of the provincial council in Pennsylvania, was governor for one day when William Penn was absent from the colony, Johnson said.
Marshall W. Johnson
A training and certification workshop was held at UC Kearney Agricultural Research and Extension Center for agricultural pest management professionals and successfully added 23 individuals to the registry of Technical Service Providers .
The goal of the workshop was to train, certify and register individuals with integrated pest management (IPM) expertise to support the mission of the United States Department of Agriculture Natural Resource Conservation Service (NRCS) as Technical Service Providers. These new Technical Service Providers will support the mission of NRCS by augmenting highly technical areas in the development and documentation of IPM Conservation Activity Plans. Using private sector expertise in conjunction with NRCS personnel and UC IPM Pest Management Guidelines, additional services can be provided to landowners seeking mitigation to natural resource concerns.
The workshop was conducted with University of California Agriculture and Natural Resources, UC Cooperative Extension, the UC Statewide IPM Program, NRCS and the Association of Applied IPM Ecologists.
NRCS provides expertise to landowners to address and mitigate on-farm resource concerns that affect air, water, wildlife, soil and humans. In recent years, there have been increased requests for assistance to mitigate resource concerns linked to pests or pest management activities.
One of the trainees was Sylvie Robillard from Tecolote IPM Consulting, who has been a pest control adviser specializing in IPM consulting for 25 years in Fresno, Kern and Tulare counties. She feels that the use of Technical Service Provider consultants will increase the number of farmers using conservation activity plans for IPM. Farmers currently using Robillard’s services already practice IPM and have a desire to conserve natural resources so that they can continue to farm. Robillard believes that by using the USDA NRCS tools and being registered as a Technical Service Provider, she can better help her clients document and refine their conservation plans. With more Technical Service Providers, more farmers can become aware of and use Technical Service Providers to help create conservation activity plans for IPM and implement conservation efforts in accordance with NRCS guidelines.
Agricultural pest management professionals training to become registered Technical Service Providers capable of developing conservation activity plans that meet integrated pest management and United States Department of Agriculture Natural Resources Conservation Service guidelines.