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BBCH-scale (pea)




The BBCH-scale (pea) identifies the phenological development stages of the peas (Pisum sativum). It is a plant species specific version of the BBCH-scale.

A downloadable version [1] of the BBCH Scales, including illustrations, is available from the BBA [2] (Federal Biological Research Centre for Agriculture and Forestry)

Phenological growth stages and BBCH-identification keys of peas
Code Description
Principal growth stage 0: Germination
00 Dry seed
01 Beginning of seed imbibition
03 Seed imbibition complete
05 Radicle emerged from seed
07 Shoot breaking through seed coat
08 Shoot growing towards soil surface; hypocotyl arch visible
09 Emergence: shoot breaks through soil surface (“cracking stage”)
Principal growth stage 1: Leaf development
10 Pair of scale leaves visible
11 First true leaf (with stipules) unfolded or first tendril developed
12 2 leaves (with stipules) unfolded or 2 tendrils developed
13 3 leaves (with stipules) unfolded or 3 tendrils developed
1 . Stages continuous till . . .
19 9 or more leaves (with stipules) unfolded or 9 or more tendrils developed
Principal growth stage 3: Stem elongation (Main shoot)
30 Beginning of stem elongation
31 1 visibly extended internode1
32 2 visibly extended internodes1
33 3 visibly extended internodes1
3 . Stages continuous till . . .
39 9 or more visibly extended internodes1
Principal growth stage 5: Inflorescence emergence
51 First flower buds visible outside leaves
55 First separated flower buds visible outside leaves but still closed
59 First petals visible, flowers still closed
Principal growth stage 6: Flowering
60 First flowers open (sporadically within the population)
61 Beginning of flowering: 10% of flowers open
62 20% of flowers open
63 30% of flowers open
64 40% of flowers open
65 Full flowering: 50% of flowers open
67 Flowering declining
69 End of flowering
Principal growth stage 7: Development of fruit
71 10% of pods have reached typical length;

juice exudes if pressed

72 20% of pods have reached typical length;

juice exudes if pressed

73 30% of pods have reached typical length;

juice exudes if pressed.Tenderometer value: 80 TE

74 40% of pods have reached typical length;

juice exudes if pressed.Tenderometer value: 95 TE

75 50% of pods have reached typical length;

juice exudes if pressed.Tenderometer value: 105 TE

76 60% of pods have reached typical length;

juice exudes if pressed.Tenderometer value: 115 TE

77 70% of pods have reached typical length.

Tenderometer value: 130 TE

79 Pods have reached typical size (green ripe); peas fully formed
Principal growth stage 8: Ripening of fruit and seed
81 10% of pods ripe, seeds final colour, dry and hard
82 20% of pods ripe, seeds final colour, dry and hard
83 30% of pods ripe, seeds final colour, dry and hard
84 40% of pods ripe, seeds final colour, dry and hard
85 50% of pods ripe, seeds final colour, dry and hard
86 60% of pods ripe, seeds final colour, dry and hard
87 70% of pods ripe, seeds final colour, dry and hard
88 80% of pods ripe, seeds final colour, dry and hard
89 Fully ripe: all pods dry and brown. Seeds dry and hard (dry ripe)
Principal growth stage 9: Senescence
97 Plants dead and dry
99 Harvested product

1 The first internode extends from the scale leaf node to the first true leaf node

References

Feller, C.; H. Bleiholder, L. Buhr, H. Hack, M. Hess, R. Klose, U. Meier, R. Stauss, T. van den Boom, E. Weber. "Phänologische Entwicklungsstadien von Gemüsepflanzen: II. Fruchtgemüse und Hülsenfrüchte. Nachrichtenbl. Deut.". Pflanzenschutzd. 47: 217-232.

Weber, E.; H. Bleiholder (1990). "Erläuterungen zu den BBCH-Dezimal-Codes für die Entwicklungsstadien von Mais, Raps, Faba-Bohne, Sonnenblume und Erbse - mit Abbildungen.". Gesunde Pflanzen 42: 308-321.

 
This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "BBCH-scale_(pea)". A list of authors is available in Wikipedia.
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