Table 3

Phytotoxicity of Stiger (clopyralid), Manage (MON 12051) and Basagran (bentazon)on plant growth index 6 weeks after treatment of landscape plants in 1992 and 1993z.

 

     1992        1993   
Herbicide lb/A JCHy JSP JCB JPN LIC CDC   JCH JSP JCB JPN CDC
Stinger (clopyralid) .125 34.9 30.1 24.4 27.0 49.2 36.8   41.4 56.3 21.3 31.2 36.3
Stinger (clopyralid) .25 34.9 27.2 29.1 25.8 44.6 36.8   44.2 58.4 22.9 32.5 35.3
Stinger (clopyralid) .50 34.5 28.5 26.3 20.4 48.5 34.4   36.6 54.1 21.3 28.2 34.3
Manage (MON 12051) .063 30.7 29.5 23.2 23.7 49.4 31.0   44.4 53.6 26.3 29.2 30.7
Manage (MON 12051) .125 30.8 28.2 27.2 25.3 48.2 34.9   42.4 54.3 21.3 32.3 26.7
Manage (MON 12051) .25 30.7 26.7 27.6 24.6 45.4 32.2   42.4 56.6 19.6 29.2 30.5
Basagran (bentazon) 1.0 35.3 26.7 22.2 27.7 48.4 39.7   37.6 55.6 21.6 30.2 32.3
Untreated --- 34.2 27.7 24.6 25.3 50.1 41.2   42.2 49.0 20.8 32.3 40.1
LSD P=0.05   ns ns ns ns 13 10   ns ns ns 12 19

 

zPlant growth index was determined using the formula , (height + maximum width + width perpendicular to maximum width)/3.. Data represent means of four single plant replicates. yJCH, Juniperus chinensis L 'Hetzi Glauca'; JSP, Juniperus chinensis L 'Parsoni'; JCB, Juniperus conierta Parl. 'Blue Pacific'; JPN, Juniperus chinensis procumbens Endl. 'Nana'; LIC, Lagerstromia indica L. 'Carolina Beauty'; CDC, Cotoneaster dammeri C.K. Schneid 'Coral Beauty'. Table 3. Phytotoxicity of Stinger (clopyralid), Manage (MON 12051) and Basagran (bentazon)on plant growth index 6 weeks after treatment of landscape plants in 1992 and 1993z.