Thinning, Fertilization and Herbicide Trials to improve Koa production

Thinning, Fertilization and Herbicide Trials to improve Koa Production CTAHR virtual field day: Umikoa Ranch November 2008 Hi. I’m J.B. Friday with the UH Cooperative Extension Service and we’re here today to talk about research in managing young koa stands. Over the past century a lot of hawaii’s upland forests were turned into cattle pasture. […]