Table 4 Correlation analysis of planting time among growth, yield components, seed yield and quality of onion at Jari northeastern Ethiopia

1

− 0.915*

− 0.858*

− 0.834*

− 0.905*

− 0.929*

0.034

− 0.901*

− 0.861*

− 0.916*

− 0.855*

− 0.881*

− 0.895*

− 0.876*

1

0.684*

0.920*

0.786*

0.798*

0.039

0.850*

0.875*

0.879*

0.846*

0.845*

0.890*

0.860*

1

0.506

0.718*

0.808*

0.188

0.724*

0.686*

0.816*

0.746*

0.716*

0.735*

0.731*

1

0.782*

0.679*

− 0.072

0.738*

0.754*

0.816*

0.804*

0.863*

0.877*

0.871*

1

0.848*

0.035

0.730*

0.708*

0.835*

0.821*

0.828*

0.788*

0.854*

1

− 0.234

0.887*

0.794*

0.726*

0.621

0.669*

0.685*

0.656

1

− 0.339

− 0.074

0.306

0.337

0.226

0.217

0.293

1

0.885*

0.714*

0.688*

0.676*

0.710*

0.663

1

0.803*

0.730*

0.776*

0.781*

0.754*

1

0.948**

0.976**

0.980**

0.973**

1

0.925*

0.923*

0.966**

1

0.986**

0.981**

1

0.966**

1