Academic Journals Database
Disseminating quality controlled scientific knowledge

Understanding Lolium rigidum Seeds: The Key to Managing a Problem Weed?

ADD TO MY LIST
 
Author(s): Danica E. Goggin | Stephen B. Powles | Kathryn J. Steadman

Journal: Agronomy (Basel)
ISSN 2073-4395

Volume: 2;
Issue: 3;
Start page: 222;
Date: 2012;
Original page

Keywords: after-ripening | dormancy | emergence | Lolium | longevity | no-till farming | persistence | ryegrass | seed | weed management

ABSTRACT
The 40 million hectare southern Australian winter cropping region suffers from widespread infestation by Lolium rigidum (commonly known as annual or rigid ryegrass), a Mediterranean species initially introduced as a pasture plant. Along with its high competitiveness within crops, rapid adaptability and widespread resistance to herbicides, the dormancy of its seeds means that L. rigidum is the primary weed in southern Australian agriculture. With the individuals within a L. rigidum population exhibiting varying levels of seed dormancy, germination can be staggered across the crop-growing season, making complete weed removal virtually impossible, and ensuring that the weed seed bank is constantly replenished. By understanding the processes involved in induction and release of dormancy in L. rigidum seeds, it may be possible to develop strategies to more effectively manage this pest without further stretching herbicide resources. This review examines L. rigidum seed dormancy and germination from a weed-management perspective and explains how the seed bank can be depleted by control strategies encompassing all stages in the lifecycle of a seed, from development to germination.
RPA Switzerland

RPA Switzerland

Robotic process automation

    

Tango Jona
Tangokurs Rapperswil-Jona