Technical annual report 2000-01
Dept. of Regional Development, Primary Industry, Fisheries and Resources technical annual report; Department of Regional Development, Primary Industry, Fisheries and Resources technical and annual report; Reports; PublicationNT; Technical bulletin (Northern Territory. Dept. of Primary Industry and Fisheries) ; no. 295
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Agriculture -- Northern Territory -- Periodicals; Fisheries -- Northern Territory -- Periodicals
Dept. of Primary Industry and Fisheries
Technical bulletin (Northern Territory. Dept. of Primary Industry and Fisheries) ; no. 295
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Technical Annual Report 2000/01 47 Results: The 11 treatments used had varying degrees of success depending on the weed species. To date, the most universal chemical has been Glyphosate with 0.1% LI700 and 0.25% Uptake wetter. The major contributing factor has been the height and density of the weed mass. Generally taller weeds are better affected due to greater chemical contact. Senna was the most difficult plant to kill with only Tordon 75D producing an 80% success rate. Glyphosate at 10 to 1 with both surfactants produced a 100% kill on S. acuta and S. cordifolia; however, all other treatments gave a 33% to 80% kill on both weeds. Gooseberry was controlled by all treatments. All chemicals used affected hyptis with six of the treatments giving 100% kill; however, the higher rates of Glyphosate and Brush Off were less effective. Pennisetum was only affected by treatments containing Glyphosate, with all Glyphosate treatments reducing plant growth; however only Treatment 3 was 100% effective. See Figures 1 and 2. Figure 1. Effect of chemicals on Flannel weed, Sida and Senna 0 20 40 60 80 100 1 2 3 4 5 6 7 8 9 1 0 1 1 C o n tro lTreatments % K ill Flannel weed Sida Senna