Winter wheat measurements

[Ogirevich]

Hello!
I am trying to find any kind of a document/book/lecture that has measurements of winter wheat crop at different development stages. For example: what height of the crop is normal to observe at the specific stage of development. Do you have any ideas where I can find it?
Thank you in advance!

 

[John Slejpner]

https://cereals.ahdb.org.uk/media/180128/g49-cereals-growth-stages-a-guide-for-crop-treatments.pdf

also Google "Zadoks cereal growth scale"

 

[Ogirevich]

https://cereals.ahdb.org.uk/media/180128/g49-cereals-growth-stages-a-guide-for-crop-treatments.pdf

also Google "Zadoks cereal growth scale"

Dear John,
Thank you for your quick response. I appreciate your help. Unfortunately, these sources do not have specific numbers which can help in evaluation of physical condition of a plant. Stages of development are there, but without specifications about height, how many kernels is good, what length of a leaf has to be at the specific stage, etc.

 

[AndrewM]

https://projectblue.blob.core.windo...orted Publication Docs/Wheat growth guide.pdf page 26 has a graph of crop height vs growth stage.
i doubt there is much info around on leaf length, i think it would vary too much between varieties.
pages 30-31 have some info on wheat ears,

 

[Ogirevich]

https://projectblue.blob.core.windows.net/media/Default/Imported Publication Docs/Wheat growth guide.pdf page 26 has a graph of crop height vs growth stage.
i doubt there is much info around on leaf length, i think it would vary too much between varieties.
pages 30-31 have some info on wheat ears,

Dear Andrew,
That was exactly what I was looking for. Thank you!

 

[Dave645]

Dear John,
Thank you for your quick response. I appreciate your help. Unfortunately, these sources do not have specific numbers which can help in evaluation of physical condition of a plant. Stages of development are there, but without specifications about height, how many kernels is good, what length of a leaf has to be at the specific stage, etc.

That’s because they can vary by variety, also farmers can use chemicals to shorten the crop etc etc.
Colour and nitrogen content are the normal indicators of health, yield is linked to health and weather and plant numbers per m2, even then the best looking crop can have its yield slashed by weather, lack of sun lack of rain or high winds / lodging if the variety has poor standing power.
The numbers your looking for have next to no meaning.

 

[Ogirevich]

That’s because they can vary by variety, also farmers can use chemicals to shorten the crop etc etc.
Colour and nitrogen content are the normal indicators of health, yield is linked to health and weather and plant numbers per m2, even then the best looking crop can have its yield slashed by weather, lack of sun lack of rain or high winds / lodging if the variety has poor standing power.
The numbers your looking for have next to no meaning.

Makes sense. Thank you for the response.

 

[Oat]

As mentioned above, the plant height will vary according to variety, growing conditions, fertiliser and chemical inputs (especially PGRs- Plant Growth Regulators).
However, at maturity a wheat plant will typically be 80-90cm tall, and before stem extension (occurs in Spring) the height will probably be less than 10cm.