Lucerne (Medicago sativaL) establishment on uncultivated pumice hill country

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Abstract
The establishment of lucerne oversown into herbicide-treated pasture on steep hill country in the central North Island was investigated in 4 trials. Netting increased establishment and this was probably a result of protection of seeds and seedlings from predation. Trampling seed by stock after sowing improved plant establishment where nets were not used. Trampling seed after sowing was also beneficial where nets were used to control predation but the increased length of cover had a negative effect. Sowings from mid-July onwards gave the most effective plant establishment; lime or seed pelleting generally improved plant establishment with seed pelleting replacing the need for lime. Overall, however, lucerne establishment by oversowing still cannot be achieved with complete reliability.

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