BBCH-scale (cotton)

The BBCH-scale (cotton) identifies the phenological development stages of cotton (Gossypium hirsutum). It is a plant species specific version of the BBCH-scale.

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

1 Leaves are counted from the cotyledon node (= node 0) 2 Side shoot development may occur earlier, if there is a vegetative side shoot continue with principal growth stage 2. If there is a reproductive side shoot (fruiting branch) continue with the principal growth stage 5 3 Vegetative side shoots are counted from the cotyledon node 4 “pin-head square” or “match-head square” is the first square which forms at the first fruiting position of the first fruiting branch