Effect of seeding time and dense seeding cultivation of soy bean ‘Chikushi-B5’ in flat field located in southern part of Chikugo area
2020
Ishitsuka, A. (Fukuoka Agriculture and Forestry Research Center, Chikushino, Fukuoka (Japan)) | Iwabuchi, T. | Ono, Y. | Sato, H. | Taniguchi, K.
The effects of seeding time and planting density of the soybean variety ‘Chikushi-B5’ were examined in terms of improved yield to clarify optimal seeding time and dense seeding cultivation in a flat field located in the southern part of the Chikugo area. Compared to ‘Fukuyutaka’, ‘Chikushi-B5’ lodging was smaller, 100-grain weight was slightly heavier, and yield was comparable to slightly better. The optimal seeding time for ‘Chikushi-B5’ with stable yield was considered to be early and mid-July. Regarding seeding density, yield was improved by dense seeding at any seeding time in July. In particular, it was considered that when seeding is delayed to late July, by densely seeding in the range 15 to 10 cm between main stems, growth of branches and grain number will both increase, and yield will improve.
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