Renovating existing pasture and resowing with desirable species is useful for controlling serrated tussock. Seek advice from an agronomist on the best approach. Sow crops for at least two years before sowing pasture to reduce serrated tussock seed density, apply fertiliser as required, sow pasture (cultivated or direct drilled) into warm moist soil for rapid germination and establishment. Suitable pasture species include phalaris, cocksfoot and clover. Competitive native species include kangaroo grass, poa and silver tussock. Don’t graze for 12 months after sowing pasture to ensure they establish. Aerial or broadcasting of seed can be effective in steep or rocky areas but takes longer to establish. Increase soil fertility for better pasture growth. Consideration should be given to soil fertility, acidity, terrain and pasture composition.
Revegetation works can be undertaken on degraded pastures or areas requiring complete renovation and resowing, along with mixed native and improved pastures requiring more desirable species after treating serrated tussock, and on steep or rocky land needing plants to compete with serrated tussock. Revegetation works should generally be undertaken in Autumn.
Pros and cons
Dense pasture provides groundcover and competes with serrated tussock, reducing its potential to re-establish. Pasture management can improve the productivity of land. Grazing is limited in the first 12 months and possibly longer in areas where pastures have been aerially sown. Aerially‑sown pastures can be very slow to establish. Poor weather conditions can also hinder the establishment of pasture.
Control any serrated tussock with chipping or spot spraying. Manage grazing to maintain vigorous pasture.
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