300

29 bc

150

29 bc

107

36 b

400

30 bc

200

29 bc

108

31 c

500

27 cd

250

25 cd

109

24 cd

600

27 cd

300

19 de

700

18 de

350

13 ef

800

10 f

400

7 f

900

5 f

450

7 f

LSD

5.6

Regression

y = −0.037x + 42.67

y = −0.08x + 42.81

y = −1.98x + 47.88

r2

0.91

0.95

0.67

Effective dose (ED50)

577 µg∙ml−1

267 µg∙ml−1

Gray mould disease severity (%)

0

85 a

0

85 a

0

85 a

200

85 a

200

80 b

105

85 a

400

80 a

400

65 c

106

80 a

600

70 b

600

53 c

107

74 ab

800

55 c

800

35 d

108

65 bc

1000

30 d

1000

20 f

109

55 c

LSD

12.5

Regression

y = −0.05x + 94.28

y = −0.06x + 90.04

y = −2.99x + 91.44

r2

0.85

0.98

r² = 0.63

Effective dose (ED50)

943 µg∙ml−1

750 µg∙ml−1