Abstract
AbstractWhen sown over consecutive years at two sites in the Western Australian wheatbelt, a maximum of 34.5% of viable Chondrilla juncea seeds gave rise to emerged seedlings. During the early winter months at one site, waterlogging on a duplex soil type led to an almost complete failure of emergence. Very low levels of seed persistence (maximum 3.1%) between years were noted.The protection provided by stubble enhanced the survival of C. juncea seedlings which emerged during May, but for seedlings which emerged later, the effects of stubble upon seedling survival were strongly dependent upon the abundance of the red‐legged earth mite (Halotydeus destructor) At the observed densities of winter annuals, the presence of seedlings and young plants appeared to reduce seedling mortality in C. juncea.Young plants of C. juncea were highly susceptible to simulated cultivation practices until 12 weeks following emergence. It is argued that seedling establishment of C. juncea is most likely to occur during the pasture phase of crop/pasture rotations in the Western Australian wheatbelt and that pastures immediately following cropping years are most prone to invasion.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.