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Today I went to soybean field. I’m not familiar with soybean, and now I’m studying soybean physiology

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When the third node is formed, the first trifoliate leaflets extend, and this stage is called the V1 stage. When the second trifoliate leaf is established, it enters the V2 stage.

Therefore, the current soybean growing stage is V3.

Reference

https://bookstore.ksre.ksu.edu/pubs/MF3339.pdf

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