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

Abstract

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 overrun 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.