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Table 4 Linear regression parameters quantifying the changes in maize phenological development for the observed phenological data of the four regions during the baseline period

From: Abundance of adverse environmental conditions during critical stages of crop production in Northern Germany

 

DH

UE

FL

OS

Estimate

R2/n

p value

Estimate

R2/n

p value

Estimate

R2/n

p value

Estimate

R2/n

p value

[d]

[d/y]

[d]

[d/y]

[d]

[d/y]

[d]

[d/y]

Sowing

119 ± 7

0.14

 

122 ± 7

0.02

 

118 ± 7

0.1

 

120 ± 7

0.01

 

− 0.35 ± 0.05

258

4.3E−10***

− 0.14 ± 0.07

187

5.1E−02

− 0.46 ± 0.20

55

2.2E−02*

− 0.1 ± 0.21

 

6.3E−01

Emergence

134 ± 8

0.17

 

134 ± 8

0.06

 

131 ± 7

0.12

 

133 ± 6

0

 

− 0.4 ± 0.06

255

9.1E−12***

− 0.24 ± 0.08

177

2.0E−03**

− 0.52 ± 0.19

56

9.0E−03**

0.06 ± 0.18

 

7.4E−01

Tasselling

192 ± 12

0

 

194 ± 15

0.02

1.4E−01

202 ± 23

0.16

 

198 ± 15

0.16

 

0.09 ± 0.13

168

4.8E−01

0.27 ± 0.18

125

 

− 1.21 ± 0.31

81

0.0E+00***

− 0.84 ± 0.25

 

1.0E−03**

Flowering

201 ± 10

0.05

 

206 ± 9

0.06

1.6E−02*

201 ± 7

0

 

199 ± 17

0.01

 

− 0.36 ± 0.16

108

2.6E−02*

− 0.45 ± 0.18

90

 

− 0.06 ± 0.22

50

7.9E−01

− 0.28 ± 0.59

 

6.4E−01

Harvest

280 ± 17

0

 

271 ± 18

0.01

1.7E−01

262 ± 15

0.08

 

262 ± 11

0.03

 

− 0.07 ± 0.13

259

5.8E−01

− 0.24 ± 0.17

196

 

− 0.8 ± 0.39

54

4.4E−02*

− 0.4 ± 0.34

 

2.5E−01

  1. Significance levels are denoted as followed: “.” for 0.1, “*” for 0.05, “**” for 0.01, and “***” for 0.001