Oilseed Rape Growth Stage Guide

0 - Germination and emergence

1 - Leaf production

• 1,0 - Both cotyledons unfolded
• 1,1 - First true leaf
• 1,2 - Second true leaf
• 1,5 - Fifth true leaf
• 1,10 - About tenth true leaf
• 1,15 - About fifteenth true leaf

2 - Stem extension

• 2,0 - No internodes ('rosette')
• 2,5 - About 5 internodes

3 - Flower bud development

• 3,0 - Only leaf buds present
• 3,1 - Flower buds enclosed by leaves
• 3,3 - Flower buds visible from above
• 3,5 - Flower buds raised above leaves
• 3,6 - Flower stalks extending
• 3,7 - First flower buds yellow ('yellow bud')

4 - Flowering

• 4,0 - First flower opened
• 4,1 - 10% all buds opened
• 4,3 - 30% all buds opened
• 4,5 - 50% all buds opened
• 4,7 - 70% all buds opened
• 4.9 - 90 % all buds opened

5 - Pod development

• 5,3 - 30% potential pods
• 5,5 - 50% potential pods
• 5,7 - 70% potential pods
• 5,9 - All potential pods

6 - Seed development

• 6,1 - Seeds expanding
• 6,2 - Most seeds translucent but full size
• 6,3 - Most seeds green
• 6,4 - Most seeds green-brown mottled
• 6,5 - Most seeds brown
• 6,6 - Most seeds dark brown
• 6,7 - Most seeds black but soft
• 6,8 - Most seeds black and hard
• 6,9 - All seeds black and hard

7 - Leaf senescence

8 - Stem senescence

• 8,1 - Most stem green
• 8,5 - Half stem green
• 8,9 - Little stem green

9 - Pod senescence

• 9,1 - Most pods green
• 9,5 - Half pods green
• 9,9 - Few pods green