Japanese apple saplings reportedly sold illegally

August 13, 2019

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first_img Japanese apple saplings reportedly sold illegally … August 03 , 2018 You might also be interested in Chinese market apple shortage leads to highest pri … U.S. researchers have begun testing an insect-killing fungus in a Florid citrus grove, targeting the Asian citrus psyllid (ACP) which vectors citrus greening disease.Fighting plant disease with jet blast sprays is standard practice for citrus growers, but to spray a fungus to control a single insect that carries a disease-causing pathogen is uncommon, according to the University of Florida’s Institute of Food and Agricultural Sciences (UF/IFAS).“Applied biological control is an integral and sustainable component of managing all insect pests in citrus groves,” said Ronald Cave, director of the UF/IFAS Indian River Research and Education Center (IRREC).The fungus, Isaria fumosorosea, occurs naturally in citrus groves. Lance Osborne, a professor of entomology at the UF/IFAS Mid Florida Research and Education Center, first discovered the fungus attacking mealybugs in a greenhouse in the mid-1980s. Cave said the scientists are interested in using the fungus because it kills and changes the pest’s feeding behavior.A biological scientist at IRREC, Pasco Avery, tested the fungus against the ACP under laboratory conditions, using leaf disk bioassays in Petri dishes. He said the fungus could be an effective biological control agent against the pest.“The fungus is not a panacea, but it is expected to greatly reduce the problem we have in managing the psyllid populations,” said Avery.“The fungus kills the psyllid but is compatible with beneficial insects like lady beetles, lacewings and parasitic wasps, which also control the psyllid.”Because the ACP is invasive, its natural enemies are not present in Florida’s groves, and this factor enabled the pest to spread quickly throughout the state’s citrus-producing areas, Avery said. Bob Adair, executive director at the Florida Research Center for Agricultural Sustainability in Vero Beach, heard about Avery’s work with the fungus and approached him about using commercial sprayers to distribute the fungus in his groves.center_img Walmart “disappointed” by U.K.’s blocked Asda-Sain … Australia: Costa Group upbeat for 2019 despite pro … “Five years ago, Avery and I talked about how the fungus may enhance the effectiveness of horticultural oil sprays in controlling the insect in groves,” said Adair.“Our work now is to add mass quantities of the fungus with horticultural oils that have been used in groves for decades and apply it to groves.”Avery carried out experiments in his laboratory to determine if the oils were compatible with the fungus and published the results in the Insects journal in 2017. He found that the oils sustained the fungus and helped it to grow and thrive, he said.“What we found in the laboratory was that with the addition of the oils to the fungal suspension, it killed the insects faster and extended its efficacy,” said Avery.Adair said the next step was to determine its efficacy in field trials in citrus groves. The fungus needs to be tested in outdoor groves to determine whether it can suppress the ACP population to the point where trees will be protected and that it will not become resistant to the sprays.Avery and Adair conducted a first field spray trial in mid-June, with about 1 acre of trees sprayed on one side of the row. The scientists mixed 1 percent of a commercial product containing the fungus, Isaria fumosorosea, with stylet oil for 65 pounds of spray. The spray was applied to the trees at dusk with a pull air blast sprayer hitched to a tractor.Avery said the fungus was effective in suppressing the ACP population and that it lasted for up to 14 days after application. The first field trial was conducted to confirm what the scientists had determined in the laboratory.A second field trial is scheduled for September. For the second field trial, both sides of the trees in the same grove will be sprayed with fungus added to the horticultural oil, said Avery.“What we found with this first experiment was that the fungus was as effective as the active ingredient of the insecticide spinosad,” said Adair.“We tested the fungus for psyllid control, the effect on beneficial insects and resistance management. Now we need to conduct more tests to determine its effectiveness on a wider scale and time range.”last_img read more


Workers immigrants rally for May Day

July 31, 2019

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first_img“ICE is a real thing, but there are a lot of people here who weren’t there then who are experiencing long lines at the airport, journalists who need a line of defense, teachers, nurses, janitors. And that matters,” Carrillo said. “We feel good. I see a lot of faces here that normally would not come out to the city for anything political.”One transgender demonstrator, Mariposa, called attention to the treatment of trans immigrants.“I’m here today to hold space for the Trans community,” they said. “Trans women in the ICE facilities, they are being placed into male facilities, which increases their chances of sexual violence. I’m here for them.”Photo by Lola M. ChavezCoinciding with the march was the closure of multiple businesses in the Mission and throughout the city. In the weeks leading up the march, organizers spoke with business owners in the Mission to rally support for the strike.“We made sure the commitment was there that our people stand as one,” said one of the march’s organizers, Frank Lara, a teacher at Buena Vista Horace Mann in the Mission and an activist with the ANSWER Coalition. “And that all of the contributions that immigrant labor puts out, that we were able to shut it down [today].”Organizers lauded the peaceful nature of the march, which while boisterous and large did not result in any confrontations with officials. But the atmosphere turned a little less congenial when a park ranger began ticketing unlicensed vendors selling ice cream in the sunny Civic Center plaza. Protesters descended on the scene, shouting “shame on you” at the ranger and admonishing the vendor not to sign anything.A park ranger tickets a paletero. Photo by Lola M. Chavez“I need you to tear that up. I’m asking you to tear that up,” one of the organizers, Olga Miranda, president of the labor union SEIU Local 87, told the ranger.As the ranger walked away, the vendor remained behind, shaking with nerves. Activists promised they would talk to the appropriate agency to see about getting the citation rescinded or cover the cost for him. In a demonstration of solidarity with worker and immigrant rights activists around the nation, protesters streamed onto Market Street and into Civic Center Plaza on Monday to mark May Day, also known as International Workers Day. Locally, it was also pronounced a Day Without Immigrants to protest federal immigration policies. Thousands marched down Market Street, according to police estimates, and hundreds stayed to rally in front of City Hall.“This year the level of people afraid of being deported is out of control. I spoke to so many people, so many families afraid to leave the house,” said Roberto Hernandez, a Mission activist and one of the organizers of the march. “Being here today is like therapy… Families are here and they’re smiling, we’re giving them hope and strength and courage. There’s laws in place in this country, we’re not just going to hide.”Photo by Lola M. ChavezArtist Dogpaw Carrillo, a Mission resident, said he had attended a similar action in 2006 that drew thousands. 0%center_img Tags: immigration • protests Share this: FacebookTwitterRedditemail,0%last_img read more