Effect of clipping and fertilizer addition on the feed value of Nassella neesiana (Chilean needle grass) during reproductive growth stages

Charles GrechA,D,E, David McLarenB,E, David ChapmanC and Brian M. SindelD,E

A Department of Primary Industries, 475 Mickleham Rd, Attwood, Victoria 3049, Australia.

B Department of Primary Industries, PO Box 48 Frankston, Victoria 3199, Australia.

C School of Agriculture and Food Systems, The University of Melbourne, Victoria 3010, Australia.

D School of Rural Science and Agriculture, The University of New England, Armidale, NSW 2351, Australia.

E Cooperative Research Centre for Australian Weed Management.


Concern about the invasion of pastures in southeastern Australia by Nassella neesiana (Chilean needle grass)began to mount in the 1970s. Native to temperate South America, N. neesiana can completely over-run pastures resulting in canopy cover of up to 60%. Such infestations lead to a substantial reduction of stock carrying capacity during late spring and summer when the weed produces large quantities of unpalatable flower stalks. By the 1990s many farmers in New South Wales and Victoria found that they had expanding cover of N. neesiana in their paddocks. Moreover, the weed has been invading conservation areas comprising native grasslands, grassy woodlands and riparian vegetation in many areas.

 

Plant Protection Quarterly (2005) 20 (1) 16.