Table 3 The association of planted acres with different cropping lengths and their effects on incidence of cotton diseases in 2012.

From: Temporal patterns of cotton Fusarium and Verticillium wilt in Jiangsu coastal areas of China

Cropping systems*

Ratio of different planting lengths

Effect of cropping ages of cotton#

0–2 y

3–5 y

6–10 y

>10 y

Fusarium wilt

Verticillium wilt

r

p

r

p

Barley-cotton

0–5%

15–25%

25–40%

15–20%

0.940

0.015

0.948

0.013

  1. *Cropping systems exclude the paddy-upland rotation system, because it had low percentage (0–5%) of the total cotton areas compared to dry land system (Barley-cotton) in the surveyed region. # r indicates the coefficient of correlation, and p indicates the significance.
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