Thumbnail Image

Pragmatism in hill pasture renovation

Frengley, G. A. G.
Anderson, C. J.
Conference Contribution - published
Fields of Research
ANZSRC::070101 Agricultural Land Management , ANZSRC::140201 Agricultural Economics
Hill pasture renovation methods have been restricted in the past to surface oversowing of unaltered, trampled or burnt pastures. Unfortunately the old pasture recovers and may compete vigorously with the establishing new species, slowing pasture improvement. The availability of suitable herbicides has opened up a new opportunity for hill pasture development. Herbicide applied before oversowing can minimise the competition and allow the new species to establish more easily. The benefits include reduced time to attain optimal stocking rates and improved establishment control, but these are offset by higher initial costs. The technical aspects of the herbicide establishment methods are overshadowed by the economic factors which control the profitability of the programme, however successfully applied. As the cash flow patterns differ between the traditional renovation and the herbicide based techniques, changes in interest rates and prices have differential effects. Real interest rates below 7% make both methods profitable but are more favourable to the herbicide technique at 1987 prices, Also, price increases favour the herbicide method. Among other issues affecting the speed and profitability of development and ultimate gain, management skill is found to be crucial and dominates both establishment methods.
Source DOI
Copyright © The Authors and New Zealand Grassland Association
Creative Commons Rights
Access Rights