Environment

Giant ragweed

Soybean

Year

Nearest town

Spray date

RH

Maximum height

Density

Cultivar

Planting date

Rate

Row spacing

%

cm

plants∙m⁻²

seeds∙ha⁻¹

cm

2012

McGregor

1-May

66

8

218

Pioneer 92Y53

22-May

555,967

19

2012

Windsor

8-May

46

14

229

Pioneer 93Y05

8-June

432,425

38

2012

Windsor

8-May

69

13

77

Dekalb 31-11

16-May

444,789

38

2013

Harrow

9-May

62

16

152

Dekalb 31-11

23-May

376,000

75

2013

McGregor

17-May

62

8

234

Dekalb 31-11

24-May

376,000

75

2013

Tilbury

9-May

49

12

252

Dekalb 31-11

27-May

376,000

75