Returns from investing in weed control using Oust in southern pine plantations

Busby, R.L.

Proceedings of the 45th Annual Meeting of the Southern Weed Science Society: 194-198


Accession: 002483201

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The effects of herbaceous weed control (HWC) using Oust [sulfometuron-methyl] in southern pine [Pinus 'Southern'] plantations were modelled, assuming that HWC allows the pine crop to occupy a site faster than it would otherwise; 1-, 2- and 3-year shifts in stand development were modelled. Returns were evaluated by land expectation value (LEV) and the internal rate of return (IRR). The base management regime consisted of site preparation, planting, commercial thinning at age 15 years and final harvest at age 30 years. HWC was profitable when rotation age was reduced by as little as 1 year, and more so for 2- and 3-year reductions; a 2-year acceleration increased LEV by $26-$189 and IRR by 11.4%-12.2%.