Disease

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📄 Preliminary Study on the Control of Cucumber Green Mottle Mosaic Virus in Commercial Greenhouses Using Agricultural Disinfectants and Resistant Cucumber Varieties

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Submitted by Elsewhere on 2020-Nov-27 Fri 09:33
2277

Cucumber green mottle mosaic virus (CGMMV) is a re-emerging threat to greenhouse cucumber and other Cucurbitaceae crop production worldwide. This seed-borne virus can easily spread from a contaminated seeds to seedlings and to adjacent plants through mechanical contact of the foliage of diseased and healthy plants causing extensive yield losses. Additionally, infection may not be limited to the current crop but may also affect subsequent crops due to the long-term persistence of the virus on contaminated crop residues, greenhouse hard surfaces and soil or soil-less greenhouse substrates. In the present work, three greenhouse experiments were conducted to develop an integrated pest management strategy towards controlling CGMMV in commercial cucumber greenhouses, by implementing an effective sanitization program and using resistant and grafted cucumber varieties. Results of sanitization highlighted that pressure washing and cleansing with an alkaline foam cleanser eliminated CGMMV on some of the most heavily infested areas. However, three successive applications of cleanser and disinfectants were essential to completely eliminate CGMMV on porous and uneven surfaces, such as cement alleyway, tray gutters and floor mats.

Researchers might have found a way for plants to strike back at viruses

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Submitted by Elsewhere on 2020-Nov-11 Wed 08:46
2126

Recently discovered interactions between plant and viral proteins open up new avenues for making plants resistant to viruses, thus safeguarding crop yields in changing climate conditions. Many diseases caused by common plant viruses reduce the crops of important food plants. In the worst case, potato…

📄 Bacillus amyloliquefaciens strain PMB05 aids in resistance against bacterial wilt of tomato

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Submitted by Elsewhere on 2020-Nov-09 Mon 13:27
2084

Tomato is an economic crop worldwide. Many limiting factors reduce the production of tomato, with bacterial wilt caused by Ralstonia solanacearum being the most destructive disease. A previous study showed that the disease resistance to bacterial soft rot is enhanced by Bacillus amyloliquefaciens strain…

📅 Exploring key roles of Fusarium oxysporum non-pathogens associated with tomato cultivation

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Submitted by Elsewhere on 2020-Nov-03 Tue 07:38
2029

The Fusarium oxysporum Species Complex (FOSC) comprises a wide diversity of plant pathogenic fungi, causing severe disease in a wide range of economically important crops including banana, cotton, melon, tomato and over 100 others. The group also contains nonpathogenic isolates, some of which have been…

📄 A molecular roadmap to the plant immune system

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Submitted by Elsewhere on 2020-Nov-03 Tue 07:37
2031

The latest advances in our understanding of the plant immune system are mapped out in a new review by John Innes Centre researchers. A molecular roadmap to the plant immune system is a detailed look at immune receptor function at the molecular level – with a focus on cell surface and intracellular immune…

How far-red light enrichment modulates tomato resistance towards Botrytis cinerea

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Submitted by Elsewhere on 2020-Oct-30 Fri 13:15
1984

Red and blue light are the major wavelength which are absorbed by leaf tissue and used for photosynthesis while others, i.e yellow and green light are reflected giving the plants their natural color. Far-red light (FR), which is invisible to the human eye, is transmitted by green plant tissues and…

EC updates standards for Cucumber mosaic virus in tomato seeds

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Submitted by Elsewhere on 2020-Oct-29 Thu 13:05
1976

As published on Monday 26 October in the Official Journal of the European Union (EU), the European Commission (EC) has updated the legislation on measures against the introduction and spread of the Cucumber mosaic virus in tomato seeds, repealing Decision 2004/200/EC and adopting measures against the…

EC updates standards for Cucumber mosaic virus in tomato seeds

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Submitted by Elsewhere on 2020-Oct-28 Wed 07:35
1968

As published on Monday 26 October in the Official Journal of the European Union (EU), the European Commission (EC) has updated the legislation on measures against the introduction and spread of the Cucumber mosaic virus in tomato seeds, repealing Decision 2004/200/EC and adopting measures against the…

New testing method available for Tomato brown rugose fruit virus (ToBRFV)

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Submitted by Elsewhere on 2020-Oct-26 Mon 09:13
1934

Prime Diagnostics, part of Wageningen University & Research, has developed a new antiserum that can specifically detect Tomato brown rugose fruit virus (ToBRFV) in infected plant material and seeds. The antiserum is intended to be used in DAS-ELISA, a testing method commonly used by inspection services…

Mystery solved: How do tips of plants stay virus-free?

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Submitted by Elsewhere on 2020-Oct-09 Fri 13:28
1752

Plants are able to keep growing indefinitely because they have tissues made of meristems—plant stem cells—which have the unique ability to transform themselves into the various specialized cells that make up the plant, dividing whenever appropriate and producing new cells of whatever type as needed.…

'Within 3 years, we'll be introducing new yellow and red onions that are resistant to downy mildew'

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Submitted by Elsewhere on 2020-Sep-18 Fri 12:29
1394

Relatively few new seed onion varieties have been introduced in recent years. Then, last year, the Dutch company, Syngenta, introduced the Promotion. And the Nation variety is set to be launched new year. "These varieties are available in the short term already. But, we have something new in store for…

Pest and Disease Management in Lemon Cultivation

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Submitted by Elsewhere on 2020-Sep-17 Thu 08:55
1386

Lemon tree grows in a subtropical climate and bears a sour yellow coloured fruit when ripe. Lemon trees are affected by insects like Asian citrus psyllid and citrus rust mites. Both can be dealt with spraying oil onto the trees. Diseases include Citrus canker, Greasy spot, Anthracnose etc.

Preventing diseases coming into your fresh produce

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Submitted by Elsewhere on 2020-Sep-14 Mon 10:37
1314

“The first thing is to understand the controlling factors. How do you make sure of the soil and the water quality health. Our job is the water quality.” Outside of heavy metals, some micro-nutrients are toxic to plants in moderate concentrations or specific conditions.  KETOS looks at water quality…

How to prevent and manage diseases in nurseries and greenhouses

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Submitted by Elsewhere on 2020-Sep-02 Wed 11:11
1207

Learn how to prevent and manage diseases in nurseries and greenhouses. Disease Management is the fourth course of the award-winning Greenhouse Online Training courses offered by the University of Florida IFAS Extension. This intermediate course is designed for growers with some experience and training…

The link between DNA repair and crop resilience in plants

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Submitted by Elsewhere on 2020-Sep-02 Wed 11:09
1212

A multi-institution, international study led by Texas A&M AgriLife Research will investigate how a process that triggers DNA repair in plants also plays a role in strengthening their disease immunity. Understanding key functions of the process, which is well-studied in humans, will help scientists design…

Dry produce cleaning treatment extends shelf-life while killing bacteria and viruses

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Submitted by Elsewhere on 2020-Aug-26 Wed 11:03
1133

The Moyer family settled in Ontario in 1799 and have been farming in the Niagara Peninsula ever since. In keeping with tradition, Paul Moyer is the 9th generation of Moyer farmers, but he went far beyond the tradition when he became the co-founder of Clēan Works Corporation: a produce cleaning technology…

Fresh peaches recalled in Canada after salmonella outbreak in U.S.

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Submitted by Elsewhere on 2020-Aug-23 Sun 09:23
1105

Canadians are being warned to avoid some fresh peaches from a California company after a salmonella outbreak in the United States. Prima Wawona has recalled fresh peaches with various brand names due to possible salmonella contamination. 

HelloFresh recalls onions

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Submitted by Elsewhere on 2020-Aug-20 Thu 09:56
1090

HelloFresh has been informed by one of its ingredient suppliers that it is conducting a voluntary recall of its onions due to the potential presence of salmonella bacteria. Please discard all onions received from May 8 through July 31, 2020. We recommend disposing of all onions received during the specified time period. For…

6 tips for good hygiene in the greenhouse horticulture

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Submitted by Elsewhere on 2020-Aug-13 Thu 10:06
1034

With constantly emerging viruses, pests and diseases in the greenhouse horticulture, hygiene in the greenhouse is an important and much-discussed topic. Clean hands, clean machines and clean water ensure a clean greenhouse, and therefore also clean crops. Steenks Service provides some tips for hygienic…

More than 100 more salmonella illnesses in Canada linked to onion recall

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Submitted by Elsewhere on 2020-Aug-07 Fri 16:51
909

The Public Health Agency of Canada says there are now 239 confirmed cases of salmonella infections linked to red onions imported from the United States.

Certified Onions Inc. expecting increase in pathogen testing

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Submitted by Elsewhere on 2020-Aug-05 Wed 09:25
900

In the wake of a voluntary 50-state recall of red, white, yellow and sweet onions originating from Thomson International Inc. in Bakersfield, CA, an increase in pathogen testing requests is anticipated by Certified Onions Inc. in Nyssa, OR.

Each of COI’s members undergoes sampling for off-label pesticide use and for maximum residue levels, and the pathogen testing is available on request.

Kay Riley, founding member and president of COI, said the pesticide residue testing service is utilized on approximately 80 percent of the onion fields in Idaho-E. Oregon’s Treasure Valley and can be made available to other onion-growing regions as well. And he said some of the area’s sheds routinely use the pathogen testing.

“I’m certain we’ll see more pathogen testing this year,” Riley said on Aug. 3, adding that E. coli 157 and Salmonella are the two microbials involved.

California company likely source of North American salmonella outbreak linked to onions

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Submitted by Elsewhere on 2020-Aug-01 Sat 12:19
894

U.S. federal health officials say an outbreak of salmonella infecting nearly 400 people in more than 30 states has been linked to red onions, and they identified a California company as the likely source.

Canada encourages everyone to get involved in Tree Check Month

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Submitted by Elsewhere on 2020-Jul-30 Thu 14:10
887

This August, during Tree Check Month, the Canadian Food Inspection Agency (CFIA) and its partners in plant health protection are encouraging Canadians to check their trees and gardens for signs of insects, disease and other organisms that harm plants.

Plant disease and pest management in the commercial greenhouse

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Submitted by Elsewhere on 2020-Jul-17 Fri 08:15
812

A commercial greenhouse or indoor farm are the perfect space for growing all manner of plants, however, this space is also perfect for the harboring of pests and disease as the conditions are ideal. Unlike in the outside world that has predators and weather to control the spread of pests and disease, a…

Disinfecting with ToBRFV: 'Do not hold back, keep things thoroughly drenched'

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Submitted by Elsewhere on 2020-Jul-16 Thu 08:31
797

No grower wants contamination, but in spite of the best precautions it is still possible that the Tomato Brown Rugose Fruit Virus (ToBRFV) strikes. By now, there is experience with good disinfection and 'cleaning' the greenhouse again. The motto is: clearing everything out, cleaning the entire greenhouse…

$66 million in funding for products that enable farmers to protect crops from pests and diseases

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Submitted by Elsewhere on 2020-Jun-30 Tue 08:09
334

Aiming to kick-start the crop protection industry’s stalled R&D pipelines to develop novel, safer products for the global farming community, Enko Chem Inc.(Enko) today publicly launched after securing $45 million in a Series B round of financing, bringing its total funding raised to date to $66 million.…

Big development in Chinese tomato breeding industry

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Submitted by Elsewhere on 2020-Jun-25 Thu 09:51
293

“The current acreages dedicated to tomatoes in China are about 16 million mu, of which more than 9 million mu are for pink tomato, a main product that we breed. Currently, pink tomatoes in the north mainly face diseases where the whole plant becomes dead or where new leaves turn yellow. Against this…