Navigation Links
Blanch your weeds
Date:5/31/2012

You don't need to spray weedkiller to remove the weeds between your paving stones. Six treatments throughout the summer with either boiling water, steam or flaming will dispatch even the hardiest of unwanted plants. This is the conclusion of a new PhD project from the University of Copenhagen.

Weeds can be killed off with repeated treatments, but it is important that each treatment is dosed correctly.

Basically, every single plant needs to be burned lightly or blanched but on the other hand treated more frequently.

However, little is achieved if you just treat the weeds superficially by running quickly over the paving stones. The leaves must collapse completely and the plant's stem must also be struck by the flames.

Six times a season

Treatment must be repeated up to six times a season. A regime of fewer treatments encourages grass weeds to regrow, while more treatments are not necessarily more effective:

"We have conducted several kinds of experiments since 2004. Controlled field experiments, experiments where we have planted weeds in hard surfaces and then burned them, as well as experiments with 'real' weeds on stones. We have observed that the treatments work. It does not really matter whether you use flaming, steam or boiling water. However, if we only give a few treatments or if we use low doses, the weeds quickly reappear. Very low doses can even stimulate grass growth. This is also the case with many herbicides," says Anne Merete Rask, PhD from Forest & Landscape, Faculty of Life Sciences at the University ofCopenhagen.

Leaves must wilt after each treatment

Using alternative methods of weed control can achieve the same result as with classic herbicides, but it is necessary to pursue a clear strategy.

"It is vital that the weed is starved. This means that the plants must be treated repeatedly, and that the leaves must wilt completely after each treatment. This prevents the plants from storing carbohydrates in their roots, which is necessary for regrowth," says Anne Merete Rask.

In other words, the right dose and the right number of treatments are required, but then even the most obstinate grass weed can be eradicated.


'/>"/>

Contact: Anne Merete Rask
arask@salanti.dk
01-145-225-85188
University of Copenhagen
Source:Eurekalert

Related biology news :

1. Biodegradable mulches successfully control weeds in container-grown arborvitae
2. Beetles play an important role in reducing weeds
3. Sea urchins cannot control invasive seaweeds
4. Oldest fossils of large seaweeds, worm-like animals tell story of ancient oxygen
5. Miscanthus has a fighting chance against weeds
6. Atrazine is the main weapon against weeds in sweet corn, with few alternatives
7. Researchers offer first proof that chemicals from seaweeds damage coral on contact
8. Weeds that reinvented weediness
9. Understanding how weeds are resistant to herbicides
10. Climate change may wake up sleeper weeds
11. Biological control of tropical weeds using arthropods
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/7/2017)... March 7, 2017 Brandwatch , the leading social ... The Prince,s Trust to uncover insights to support its reporting, ... The UK,s leading youth charity will be using Brandwatch ... and get a better understanding of the topics and issues that ... ...
(Date:3/2/2017)... LONDON , March 2, 2017 Who ... infringement lawsuits? Download the full report: https://www.reportbuyer.com/product/4313699/ ... ON THE FINGERPRINT SENSOR FIELD? Fingerprint sensors using ... smartphones. The fingerprint sensor vendor Idex forecasts an increase ... in mobile devices and of the fingerprint sensor market ...
(Date:2/28/2017)... , Spanien, 27. Februar 2017  EyeLock LLC, ein ... wird seine erstklassige biometrische Lösung zur Iris-Erkennung ... mit X16 LTE auf dem Mobile World ... am Qualcomm-Stand in Halle 3, Stand 3E10, ... die Sicherheitsplattform Qualcomm Haven™ – eine Kombination ...
Breaking Biology News(10 mins):
(Date:3/27/2017)... 2017  The global market for clinical laboratory ... a new report from Kalorama Information.  In addition ... to evaluate disease progression, monitor drug treatment and ... The healthcare market research firm,s report, ... overview of the medical laboratory industry and the ...
(Date:3/27/2017)... 2017  Trovagene, Inc. (NASDAQ: TROV), a precision medicine ... Bill Welch , will be presenting at this ... AM EDT at the Essex House in ... Scientific Officer, Mark Erlander , Ph.D., will also ... The presentation will be webcast live at ...
(Date:3/24/2017)... , Mar. 24, 2017 Research and Markets ... (hESC) Research - Global Strategic Business Report" report to their ... This ... Research in US$ Million. Annual estimates and forecasts are provided for ... from primary and secondary research. The report profiles ...
(Date:3/23/2017)... ... March 23, 2017 , ... AxioMed ... both viscous and elastic characteristics when deformed, which is identical to how the ... gently absorb compressive forces and return to its natural state along a hysteresis ...
Breaking Biology Technology: