Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

’Biofumigants’ to help beat the wilt

15.09.2003


Poor farmers in developing countries could soon be using a range of ’biofumigant’ plants to help increase tropical vegetable yields.



CSIRO is part of a research team from Australia and the Philippines which has found that brassica species such as radish, mustard or broccoli can be used to help reduce yield losses from Bacterial Wilt - the major pathogen of vegetables in tropical farming.

"Brassicas contain compounds that suppress pests and pathogens, principally isothiocyanates (ITCs)," says CSIRO Plant Industry researcher, Dr John Kirkegaard.


"When ITCs are released by manuring, soil-borne pests and pathogens are suppressed and yields of solanaceous vegetables such as potatoes, tomatoes and eggplants can be increased by up to 40 per cent. The effect is known as ’biofumigation’."

The project has already evaluated brassica species and management techniques with the aim of maximising the biofumigant effect. Current field trials in the Philippines and in North Queensland are examining ways of making biofumigation practical and effective for developing countries.

Using brassicas to manage soil-borne pests is not new - there are many previous reports of disease suppression - but new insights and techniques to measure the processes involved in the release of chemicals in soil has provided opportunities to enhance the reliability of the effect.

"The project builds on that research and is making it practical for small-scale farmers around the world," Dr Kirkegaard says.

"There are economic and social benefits for small-scale farmers, as improved crop yields lead to increased incomes. There are also a range of environmental and health benefits, as a result of reduced reliance on toxic fumigants and synthetic pesticides.

"The next stage of the project seeks farmer involvement to integrate biofumigation into the cropping system, using farming networks throughout South-East Asia and the Pacific."

The team includes researchers from CSIRO Plant Industry, the Queensland Department of Primary Industry and the Philippines National Crop Protection Centre. The project is funded by the Australian Centre for International Agricultural Research (ACIAR).

More information
Dr John Kirkegaard, CSIRO Plant Industry, 02 6246 5095
Email: john.kirkegaard@csiro.au

Bill Stephens | CSIRO
Further information:
http://www.csiro.au/index.asp?type=mediaRelease&id=Prbiofumigants

More articles from Agricultural and Forestry Science:

nachricht Plasma-zapping process could yield trans fat-free soybean oil product
02.12.2016 | Purdue University

nachricht New findings about the deformed wing virus, a major factor in honey bee colony mortality
11.11.2016 | Veterinärmedizinische Universität Wien

All articles from Agricultural and Forestry Science >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously

Researchers from the University of Hamburg in Germany, in collaboration with colleagues from the University of Aarhus in Denmark, have synthesized a new superconducting material by growing a few layers of an antiferromagnetic transition-metal chalcogenide on a bismuth-based topological insulator, both being non-superconducting materials.

While superconductivity and magnetism are generally believed to be mutually exclusive, surprisingly, in this new material, superconducting correlations...

Im Focus: Studying fundamental particles in materials

Laser-driving of semimetals allows creating novel quasiparticle states within condensed matter systems and switching between different states on ultrafast time scales

Studying properties of fundamental particles in condensed matter systems is a promising approach to quantum field theory. Quasiparticles offer the opportunity...

Im Focus: Designing Architecture with Solar Building Envelopes

Among the general public, solar thermal energy is currently associated with dark blue, rectangular collectors on building roofs. Technologies are needed for aesthetically high quality architecture which offer the architect more room for manoeuvre when it comes to low- and plus-energy buildings. With the “ArKol” project, researchers at Fraunhofer ISE together with partners are currently developing two façade collectors for solar thermal energy generation, which permit a high degree of design flexibility: a strip collector for opaque façade sections and a solar thermal blind for transparent sections. The current state of the two developments will be presented at the BAU 2017 trade fair.

As part of the “ArKol – development of architecturally highly integrated façade collectors with heat pipes” project, Fraunhofer ISE together with its partners...

Im Focus: How to inflate a hardened concrete shell with a weight of 80 t

At TU Wien, an alternative for resource intensive formwork for the construction of concrete domes was developed. It is now used in a test dome for the Austrian Federal Railways Infrastructure (ÖBB Infrastruktur).

Concrete shells are efficient structures, but not very resource efficient. The formwork for the construction of concrete domes alone requires a high amount of...

Im Focus: Bacterial Pac Man molecule snaps at sugar

Many pathogens use certain sugar compounds from their host to help conceal themselves against the immune system. Scientists at the University of Bonn have now, in cooperation with researchers at the University of York in the United Kingdom, analyzed the dynamics of a bacterial molecule that is involved in this process. They demonstrate that the protein grabs onto the sugar molecule with a Pac Man-like chewing motion and holds it until it can be used. Their results could help design therapeutics that could make the protein poorer at grabbing and holding and hence compromise the pathogen in the host. The study has now been published in “Biophysical Journal”.

The cells of the mouth, nose and intestinal mucosa produce large quantities of a chemical called sialic acid. Many bacteria possess a special transport system...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

12V, 48V, high-voltage – trends in E/E automotive architecture

10.01.2017 | Event News

2nd Conference on Non-Textual Information on 10 and 11 May 2017 in Hannover

09.01.2017 | Event News

Nothing will happen without batteries making it happen!

05.01.2017 | Event News

 
Latest News

Water - as the underlying driver of the Earth’s carbon cycle

17.01.2017 | Earth Sciences

Interfacial Superconductivity: Magnetic and superconducting order revealed simultaneously

17.01.2017 | Materials Sciences

Smart homes will “LISTEN” to your voice

17.01.2017 | Architecture and Construction

VideoLinks
B2B-VideoLinks
More VideoLinks >>>