Nav: Home

Alternatives to pesticides -- Researchers suggest popular weeds

October 03, 2018

Nematodes, also known as roundworms, are one of the most numerous animal species on earth. As simple as they seem, many of them live as parasites in plants, insects and animals; habitats also include, soil, sea as well as fresh water. Researchers perform studies on nematodes, since many of them are beneficial in medicine, agriculture or veterinary science, while others damage the crops by feeding on them or by transmitting various viruses and bacterial diseases into the plant cells.

A major issue for researchers is the control of plant parasitic nematodes and the protection of crop systems. Since pesticides commonly used to combat plant attacking nematodes are often highly toxic and dangerous for the environment and non-target organisms, researchers try to find natural alternatives.

Studies suggest that botanic soil amendments with weeds may help to combat nematodes. Dr. Nikoletta Ntalli and colleagues in their Nematicidal Weeds, Solanum nigrum and Datura stramonium article published in Journal of Nematology analysed two popular and globally distributed weeds: Solanum nigrum Linn. and Datura stramonium Linn., commonly known as black nightshade and jimsonweed, researching their abilities to control nematodes.

Researchers reported on S. nigrum and D. stramonium extracts for egg hatch inhibition as well as paralytic impact on Meloidogyne sp. (the genus of the nematodes that was controlled in the study) for the first time. Additionally, when soil infested with nematodes was treated with S. nigrum seeds paste, the number of females per gram of tomato roots was the lowest ever reported.

The research findings aim at new, ecological tactics to control plant parasitic nematodes that are especially difficult to manage in protected areas inside the soil. The chemical industry rarely sustains the development of nematicides, and most of the old formulations are now banned due to toxicological and ecotoxicological reasons. Alternative control measures for an ecological control of nematodes are already introduced in many countries since under new laws, farmers are compelled to look for such. The significance of the presented study and tested methods lie not only in its proven efficiency, but more importantly in its cost effectiveness and ease to perform. Since both S. nigrum and D. stramonium are commonly and globally existing weed species, often directly situated at the site, their soil incorporation presents as an interesting alternative to the popularly used pesticides.
-end-
The original article is fully available for reading at: https://www.exeley.com/journal_of_nematology/doi/10.21307/jofnem-2018-017 DOI: 10.21307/jofnem-2018-017

About Journal of Nematology journal:

Journal of Nematology is the official publication of the Society of Nematologists since 1969. The journal publishes original papers on all aspects of basic, applied, descriptive, theoretical or experimental nematology and adheres to strict peer-review policy. Other categories of papers include invited reviews, research notes, abstracts of papers presented at annual meetings, and special publications as appropriate.

https://www.exeley.com/journal/journal_of_nematology

About Exeley:

Exeley Inc. is a New York based company that focuses on offering innovative publishing services to Open Access publications worldwide. Amongst the technological solutions delivered, the functionalities include: responsive webpage design, full-text XML, integration with social media sites and performance metrics including altmetrics.

Exeley Inc.
https://www.exeley.com

Exeley Inc.

Related Pesticides Articles:

SDHI pesticides are toxic for human cells
French scientists led by a CNRS researcher have just revealed that eight succinate dehydrogenase inhibitor pesticide molecules do not just inhibit the SDH activity of fungi, but can also block that of earthworms, bees, and human cells in varying proportions.
Pesticides deliver a one-two punch to honey bees
A new paper in Environmental Toxicology and Chemistry reveals that adjuvants, chemicals commonly added to pesticides, amplify toxicity affecting mortality rates, flight intensity, colony intensity, and pupae development in honey bees.
Hypertension found in children exposed to flower pesticides
Researchers at University of California San Diego School of Medicine found higher blood pressure and pesticide exposures in children associated with a heightened pesticide spraying period around the Mother's Day flower harvest.
Banned pesticides in Europe's rivers
Tests of Europe's rivers and canals have revealed more than 100 pesticides -- including 24 that are not licensed for use in the EU.
The persistence of pesticides threatens European soils
A study developed by researchers from the Diverfarming project finds pesticide residues in the soils of eleven European countries in six different cropping systems
Honeybees at risk from Zika pesticides
Up to 13 percent of US beekeepers are in danger of losing their colonies due to pesticides sprayed to contain the Zika virus, new research suggests.
Alternatives to pesticides -- Researchers suggest popular weeds
Research proves that extracts from S. nigrum and D. stramonium, globally existing weed species, may help to protect crop systems against agricultural pests.
Seeing pesticides spread through insect bodies
Osaka University-led team provides insights into the distribution of pesticides within insects using a newly developed method of insect sample preparation.
The more pesticides bees eat, the more they like them
Bumblebees acquire a taste for pesticide-laced food as they become more exposed to it, a behavior showing possible symptoms of addiction.
Research shows pesticides influence bee learning and memory
A large-scale study published by researchers from Royal Holloway University of London has drawn together the findings of a decade of agrochemical research to confirm that pesticides used in crop protection have a significant negative impact on the learning and memory abilities of bees.
More Pesticides News and Pesticides Current Events

Top Science Podcasts

We have hand picked the top science podcasts of 2019.
Now Playing: TED Radio Hour

Risk
Why do we revere risk-takers, even when their actions terrify us? Why are some better at taking risks than others? This hour, TED speakers explore the alluring, dangerous, and calculated sides of risk. Guests include professional rock climber Alex Honnold, economist Mariana Mazzucato, psychology researcher Kashfia Rahman, structural engineer and bridge designer Ian Firth, and risk intelligence expert Dylan Evans.
Now Playing: Science for the People

#541 Wayfinding
These days when we want to know where we are or how to get where we want to go, most of us will pull out a smart phone with a built-in GPS and map app. Some of us old timers might still use an old school paper map from time to time. But we didn't always used to lean so heavily on maps and technology, and in some remote places of the world some people still navigate and wayfind their way without the aid of these tools... and in some cases do better without them. This week, host Rachelle Saunders...
Now Playing: Radiolab

Dolly Parton's America: Neon Moss
Today on Radiolab, we're bringing you the fourth episode of Jad's special series, Dolly Parton's America. In this episode, Jad goes back up the mountain to visit Dolly's actual Tennessee mountain home, where she tells stories about her first trips out of the holler. Back on the mountaintop, standing under the rain by the Little Pigeon River, the trip triggers memories of Jad's first visit to his father's childhood home, and opens the gateway to dizzying stories of music and migration. Support Radiolab today at Radiolab.org/donate.