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Home → Publications → Tree Planters' Notes → Tree Planters' Notes Volume 19, Number 2 (1968) → Chemical Weedings of Pine Effective in Chile Nursery

Chemical Weedings of Pine Effective in Chile Nursery

Chile, with her National Reforestation Plan and an ideal climate for growing trees, has invested considerable time, money, and effort in nurseries, National parks, forest products plants, and promotion in order to raise forest production to one of her major industries. A recurring problem has been a lack of consistent production and high costs in the nurseries, partially due to tremendous weed problems. In the forestry nursery of Chillan (production-24 million annually), for example, even with workers handweeding, weeds grow at times to two feet in height. Obviously chemical weeding was a necessity, and experimentation, begun in 1964, showed Weedazol- TL superior to other herbicides tested. Weedazol-TL (3 amino-1, 2, 4 triazole plus ammonium thiocyanate as activator)2 was found to be an effective weed control agent when used on Pinus radiata Monterey pine), and indicated possibilities for Pseudotsuga menziesii. Weedazol-TL, as it is sold in Chile, contains 21.1 percent 3 amino-1, 2, 4 triazole, and 78.9 percent inert ingredients. Indications were that the use of Weedazol-TL in recommended dosages could be applied safely to many different pine species. We hope experimentation will decide its value and safety as a nursery herbicide.


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Author(s): Rene Barriga, Karl K. Kindel

Publication: Tree Planters' Notes - Volume 19, Number 2 (1968)

Volume: 19

Number: 2