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Table 2 Treatments applied in Pseudotsuga menziesii trial showing active ingredients (a.i. g ha−1). All herbicides are applied to the entire plot, apart from the spot applications indicated in bold. All herbicides are applied with water to make up 200 L ha−1. The treatment where oversowing was applied is marked with an asterisk. Amount of active ingredient used for spot control was based on planting density of 1000 stems per hectare. Products used are shown below the table

From: Herbicide options for managing competitive vegetation during the establishment of Pinus radiata and Pseudotsuga menziesii var. menziesii in Southland, New Zealand

No. Treatment Timing Year applied
Year 1 (after planting) Year 2
1 No Control - No weed control No weed control
2 Weedfree Ongoing 10000 g ha-1 aterbuthylazine, applied as and when needed 10000 g ha-1 aterbuthylazine, applied as and when needed
3 Operational Oct 10000 g ha-1 aterbuthylazine, 150 g ha-1 dhaloxyfop 1500 g ha−1 bclopyralid and organosilicone adjuvant applied in October.
4 Spot Control (1) Oct 1.4 diameter spot 10000 g ha-1 aterbuthylazine, 150 g ha−1 haloxyfop No weed control
5 Spot Control (2) Oct 1.4 diameter spot 10000 g ha-1 aterbuthylazine, 150 g ha−1 haloxyfop 1500 g ha−1 bclopyralid; 300 g ha−1 ctriclopyr, 150 g ha−1 dhaloxyfop, organosilicone adjuvant applied Oct.
6 CTH-Oct x2 Oct 1125 g ha−1 bclopyralid, 225 g ha−1 ctriclopyr, 150 g ha−1 haloxyfop, organosilicone adjuvant Repeat first year, applied Oct.
7 CTH-Oct Oct 1125 g ha−1 bclopyralid, 225 g ha−1 ctriclopyr, 150 g ha−1 haloxyfop, organosilicone adjuvant No weed control.
8 CTH-Decx2 Dec 1125 g ha−1 bclopyralid, 225 g ha−1 ctriclopyr, 150 g ha−1 dhaloxyfop, organosilicone adjuvant Repeat first year, applied Oct.
9 CTH-Dec Dec 1125 g ha−1 bclopyralid, 225 g ha−1 ctriclopyr, 150 g ha−1 dhaloxyfop, organosilicone adjuvant No weed control.
10 Winter Glyphosate July no weed control 3000 g ha−1 eglyphosate and organosilicone adjuvant
11 CTH-Oct and Winter Glyphosate Oct/July 1125 g ha−1 bclopyralid, 225 g ha−1 ctriclopyr, 150 g ha−1 dhaloxyfop, organosilicone adjuvant 3000 g ha−1 eglyphosate and organosilicone adjuvant
12* Spot Control (3) Oct 1.4 diameter spot 175 g ha−1 bclopyralid, 35 g ha−1 ctriclopyr, organosilicone adjuvant 1500 g ha-1 bclopyralid, 300 g ha−1 ctriclopyr, organosilicone adjuvant applied Oct.
  1. aAGPRO Terbuthylazine 500, 500 g L−1 terbuthylazine, AGPRO NZ Ltd
  2. bVersatill, 300 g L−1 clopyralid, DOW AgroSciences NZ
  3. cGrazon, 600 g L−1 triclopyr, DOW AgroSciences NZ
  4. dGallant, 100 g L−1 haloxyfop P-methyl, DOW AgroSciences NZ
  5. eAGPRO Green Glyphosate 510, 510 g L−1 glyphosate, AGPRO NZ Ltd