When pods contain green seeds that fills the pod at one of the four uppermost nodes on the main stem, it is usually called R6 (full seed). At R6 (full seed), seeds reach their maximum size in one or more pods on at least one of the four uppermost nodes. By mid-R6 (~R6.5), approximately 80% of the seed’s dry weight has accumulated. Subsequently, a few leaves may begin to turn, and some pods may appear lighter in color. ■ [Crop…
Agronomy note □ Sowing date: 2023/05/18 □ V4: 2023/6/28 □ Flowering: 2023/08/01 □ R6: 2023/09/12 Three weeks ago, there was an insect problem on soybean leaves caused by Japanese beetles. After flowering, applying insecticide may not be advisable, and therefore I expressed my objection to such applications among several groups sharing the same field. Unless pods are damaged, it is less likely to affect grain yield at around R5. The current growth stage is R6 (full seed), and now I…
Finally it rained in Champaign. Today I went to soybean field. I’m not familiar with soybean, and now I’m studying soybean physiology 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.pdfhttps://www.dekalbasgrowdeltapine.com/en-us/agronomy/soybean-growth-stages.html © 2022 – 2023 https://agronomy4future.com