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Table 2 Impact of botanical extracts on anthracnose disease progression and on common bean growth in farmer field trial

From: Botanical extracts control the fungal pathogen Colletotrichum boninense in smallholder production of common bean

Treatment

Number of plants infected

Disease severity score

Disease severity (%)

Plant height (cm)

Number of infected leaves

Total number of leaves per plant

Number of infected stems per plant

Number of infected pods per plant

Total number of pods per plant

Control—untreated

0.55 a

1.23 a

20.55 a

22.09 c

0.57 a

19.20 b

0.44 a

2.24 a

8.59 d

Azadirachta indica

0.42 bc

0.55 b

9.22 b

23.74 b

0.40 b

20.47 a

0.33 b

1.29 b

8.88 bc

Dysphania ambrosioides

0.40 bc

0.48 b

8.14 b

22.93 bc

0.33 b

19.16 b

0.27 bc

1.10 b

9.10 ab

Lippia javanica

0.37 c

0.48 b

8.13 b

23.72 b

0.38 b

20.32 a

0.23 c

1.12 b

8.79 cd

Control + Mancolaxyl

0.43 b

0.50 b

8.39 b

22.96 bc

0.35 b

20.27 a

0.32 b

1.27 b

9.21 a

Control + Bioderma

0.39 bc

0.48 b

8.05 b

24.88 a

0.31 b

20.71 a

0.25 c

1.22 b

9.12 ab

R2 (%)

0.08

0.36

0.36

0.06

0.05

0.03

0.08

0.23

0.05

F

9.76

61.01

61.01

7.24

5.96

3.39

9.65

32.79

6.65

Pr > (F)

 < 0.0001

 < 0.0001

 < 0.0001

 < 0.0001

 < 0.0001

0.005

 < 0.0001

 < 0.0001

 < 0.0001

  1. Data shown are means. Analysis of Variance (n = 6) followed by Fisher’s LSD test where treatments in the same column with different letters are significantly different at the 95% confidence interval