The ecology of skeleton weed (Chondrilla juncea) in Western Australia, Demographic aspects of wild radish (Raphanus raphanistrum) populations in lupin crops and Identification of populations of mesquite (Prosopis spp) from the West Pilbara region.

Authors

F. D. Panetta

Publication Date

1985

Document Type

Report

DPIRD Collections

Biosecurity, pests, weeds and diseases

Abstract

To determine what forms of skeleton weed are present in Western Australia and to map their respective distribution. To determine, on the basis of climatic characteristics, the suitability of various areas within the Western Australian wheatbelt for infestation by skeleton weed. To determine the amounts, viability and dormancy status of seeds produced by field-grown plants during summer and autumn months. To determine the effectiveness of conventional tillage practices in limiting establishment of skeleton weed seedlings. To determine the regularity with which seedling establishment occurs under field conditions and how the probability of establishment is affected by the time of germination. To follow the fates of plants which establish from experimental sowings. To determine patterns of emergence, seedling survival and reproduction of wild radish in dry and wet-sown lupin crops in relation to cultivation and herbicide treatments. To establish the identities of two Western Australian populations of mesquite (Prosopis), by comparison with taxa of known identities, using the technique of starch gel electrophoresis. This information will be: required should biological control of mesquite be attempted.

Number of Pages

27

Keywords

Western Australia.

Recommended Citation

Panetta, F D. (1985), The ecology of skeleton weed (Chondrilla juncea) in Western Australia, Demographic aspects of wild radish (Raphanus raphanistrum) populations in lupin crops and Identification of populations of mesquite (Prosopis spp) from the West Pilbara region.. Department of Primary Industries and Regional Development, Western Australia, Perth. Report.