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

Rolando, Carol A.; Watt, Michael S.; Todoroki, Christine; Henley, David; Leckie, Alan

doi:10.1186/s40490-016-0076-9

New Zealand Journal of Forestry Science

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
No.	Treatment	Timing	Year 1 (after planting)	Year 2
1	No Control	-	No weed control	No weed control
2	Weedfree	Ongoing	10000 g ha^{-1 a}terbuthylazine, applied as and when needed	10000 g ha^{-1 a}terbuthylazine, applied as and when needed
3	Operational	Oct	10000 g ha^{-1 a}terbuthylazine, 150 g ha^{-1 d}haloxyfop	1500 g ha⁻¹ ^bclopyralid and organosilicone adjuvant applied in October.
4	Spot Control (1)	Oct	1.4 diameter spot 10000 g ha^{-1 a}terbuthylazine, 150 g ha⁻¹ haloxyfop	No weed control
5	Spot Control (2)	Oct	1.4 diameter spot 10000 g ha^{-1 a}terbuthylazine, 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 b}clopyralid, 300 g ha⁻¹ ^ctriclopyr, organosilicone adjuvant applied Oct.

^aAGPRO Terbuthylazine 500, 500 g L⁻¹ terbuthylazine, AGPRO NZ Ltd
^bVersatill, 300 g L⁻¹ clopyralid, DOW AgroSciences NZ
^cGrazon, 600 g L⁻¹ triclopyr, DOW AgroSciences NZ
^dGallant, 100 g L⁻¹ haloxyfop P-methyl, DOW AgroSciences NZ
^eAGPRO Green Glyphosate 510, 510 g L⁻¹ glyphosate, AGPRO NZ Ltd

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