Skip to main content

Table 4 Treatment means (and standard errors) for groundline diameter (gld), total tree height (ht), and stand volume (SV; determined as average tree volume scaled to a hectare) at 2.5 years

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

No Treatment Pinus radiata Pseudotsuga menziesii
gld ht SV gld ht SV
(mm) (m) (m3 ha−1) (mm) (m) (m3 ha−1)
1 No control 43 (3) 2.8 (0.1) 3.0 (0.5) d 19 (1) 1.4 (0.1) 0.3 (0.1) a
2 Weed-free control 69 (3) 2.5 (0.1) 5.6 (0.6) abc 33 (3) 1.4 (0.1) 1.1 (0.2) a
3 Operational 66 (2) 2.8 (0.1) 5.4 (0.5) ab 31 (2) 1.5 (0.1) 0.9 (0.2) a
4 Spot control 1 51 (2) 2.8 (0.1) 3.4 (0.3) abcd 22 (1) 1.6 (0.1) 0.5 (0.1) a
5 Spot control 2 61 (2) 3.0 (0.1) 4.9 (0.3) abc 27 (2) 1.6 (0.1) 0.6 (0.1) a
6 CTH-Oct x2 69 (3) 2.7 (0.1) 6.0 (0.5) a 29 (2) 1.4 (0.1) 0.8 (0.1) a
7 CTH-Oct 53 (3) 2.5 (0.1) 3.6 (0.4) cd 25 (2) 1.6 (0.1) 0.5 (0.1) a
8 CTH-Dec x2 54 (3) 2.6 (0.1) 3.7 (0.4) abcd 24 (2) 1.6 (0.1) 0.6 (0.1) a
9 CTH-Dec 50 (2) 2.8 (0.1) 3.3 (0.4) bcd 30 (2) 1.7 (0.1) 0.8 (0.1) a
10 Spot control 3* 33 (2) 2.3 (0.1) 1.3 (0.2) e    
11 Spot control 4* 36 (2) 1.9 (0.1) 1.3 (0.2) e    
12 Spot control 5* 58 (2) 3.0 (0.1) 4.6 (0.4) abc    
10 Winter glyphosate     29 (2) 1.7 (0.1) 0.7 (0.1) a
11 CTH-Oct + winter glyphosate     28 (2) 1.4 (0.1) 0.6 (0.1) a
12 Spot control 3*     22 (1) 1.4 (0.1) 0.4 (0.0) a
  1. Treatments with the same letters are not significantly different (refer to the Appendix for regression details)
  2. Treatments with oversowing are marked with an asterisk