Development of a labor-saving method of fertilizer application for hard wheat cultivar 'Yumeakari'
2016
Kurono, A. | Funao, T. | Hayashi, M. | Okuno, A. | Hiraiwa, K. | Ide, Y. | Kato, M.
We studied a stable and labor-saving method of fertilizer application that can result in high yield (420 g/square m) and high grain protein content (12-14%) in the hard wheat cultivar 'Yumeakari' developed in Aichi Prefecture, Japan. We used three different types of controlled-release fertilizers for basal-dressing and quick acting fertilizers such as ammonium sulfate for top-dressing. Labor-saving methods for fertilizer application, which required 13 g/square m fertilizer for basal-dressing and 3 g/square m for top-dressing in combination with nitrogen fertilization at full heading time were compared with conventional fertilization in 2013 and 2014. We determined that fertilizer B, which was a blend of the linear type controlled-release urea LP20 and R25, and the sigmoid type MS20 (AN:LP20:R25:MS20 = 30:17.5:17.5:35) consistently released nitrogen and had a minimal year-to-year variation. The fertilizer application comprising 13 g/square m fertilizer B for basal-dressing and 3 g/square m ammonium sulfate for top-dressing at full heading time was considered optimal for obtaining a consistently high yield and high grain protein content.
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