BBCH-scale (canola)

In biology, the BBCH-scale for canola describes the phenological development of canola plants using the BBCH-scale.

The phenological growth stages and BBCH-identification keys of canola are:

class="wikitable" style="clear" ! Growth stage!!Code!!Description
rowspan="7" style="vertical-align:top"\|0: Germination \|00	Dry seed
01	Beginning of seed imbibition
03	Seed imbibition complete
05	Radicle emerged from seed
07	Hypocotyl with cotyledons emerged from seed
08	Hypocotyl with cotyledons growing towards soil surface
09	Emergence: cotyledons emerge through soil surface
rowspan="7" style="vertical-align:top"\|1: Leaf development¹
10	Cotyledons completely unfolded
11	First leaf unfolded
12	2 leaves unfolded
13	3 leaves unfolded
1 .	Stages continuous till ...
19	9 or more leaves unfolded
rowspan="6" style="vertical-align:top"\|2: Formation of side shoots \|20	No side shoots
21	Beginning of side shoot development: first side shoot detectable
22	2 side shoots detectable
23	3 side shoots detectable
2 .	Stages continuous till ...
29	End of side shoot development: 9 or more side shoots detectable
rowspan="6" style="vertical-align:top"\|3: Stem elongation² \|30	Beginning of stem elongation: no internodes (“rosette”)
31	1 visibly extended internode
32	2 visibly extended internodes
33	3 visibly extended internodes
3 .	Stages continuous till ...
39	9 or more visibly extended internodes
rowspan="7" style="vertical-align:top"\|5: Inflorescence emergence \|50	Flower buds present, still enclosed by leaves
51	Flower buds visible from above (“green bud”)
52	Flower buds free, level with the youngest leaves
53	Flower buds raised above the youngest leaves
55	Individual flower buds (main inflorescence) visible but still closed
57	Individual flower buds (secondary inflorescences) visible but still closed
59	First petals visible, flower buds still closed (“yellow bud”)
rowspan="8" style="vertical-align:top"\|6: Flowering \|60	First flowers open
61	10% of flowers on main raceme open, main raceme elongating
62	20% of flowers on main raceme open
63	30% of flowers on main raceme open
64	40% of flowers on main raceme open
65	Full flowering: 50% flowers on main raceme open, older petals falling
67	Flowering declining: majority of petals fallen
69	End of flowering
rowspan="9" style="vertical-align:top"\|7: Development of fruit \|71	10% of pods have reached final size
72	20% of pods have reached final size
73	30% of pods have reached final size
74	40% of pods have reached final size
75	50% of pods have reached final size
76	60% of pods have reached final size
77	70% of pods have reached final size
78	80% of pods have reached final size
79	Nearly all pods have reached final size
rowspan="10" style="vertical-align:top"\|8: Ripening \|80	Beginning of ripening: seed green, filling pod cavity
81	10% of pods ripe, seeds dark and hard
82	20% of pods ripe, seeds dark and hard
83	30% of pods ripe, seeds dark and hard
84	40% of pods ripe, seeds dark and hard
85	50% of pods ripe, seeds dark and hard
86	60% of pods ripe, seeds dark and hard
87	70% of pods ripe, seeds dark and hard
88	80% of pods ripe, seeds dark and hard
89	Fully ripe: nearly all pods ripe, seeds dark and hard
rowspan="2" style="vertical-align:top"\|9: Senescence \|97	Plant dead and dry
99	Harvested product

1 Stem elongation may occur earlier than stage 19; in this case continue with stage 20

2 Visibly extended internode n develops between leaf n and leaf n+1

References

{{cite journal

| last = Weber

| first = E.

|author2=H. Bleiholder

| title = Erläuterungen zu den BBCH-Dezimal-Codes für die Entwicklungsstadien von Mais, Raps, Faba-Bohne, Sonnenblume und Erbse - mit Abbildungen.

| journal = Gesunde Pflanzen

| volume = 42

| pages = 308–321

| date = 1990

}}

{{cite journal

| last = Lancashire

| first = P.D.

| title = A uniform decimal code for growth stages of crops and weeds.

| journal = Ann. Appl. Biol.

| volume = 119

| issue = 3

| pages = 561–601.

| date = 1991

| doi = 10.1111/j.1744-7348.1991.tb04895.x

}}

Category:BBCH-scale