Effects of Early Sowing Cultivation on Yield and Occurrence of Delayed Stem Senescence in Several Soybean Cultivars in South Kanto

Isobe Katsunori, Kurose Tomoko, Sasaki Yuki, Someya Tomoki, Terasawa Akiyoshi, Higo Masao, Yoichi Torigoe

doi:10.1626/jcs.83.195

The effects of sowing time on the yield and the occurrence of delayed stem senescence in 5 soybean cultivars were examined in 2011 and 2012, in the field at the experimental farm of Nihon University. All cultivars were sown in May (19 May in 2011 and 29 May in 2012) at the same planting densities (60cm row space × 15cm intrarow spacing). In 2011, there were no significant differences among the cultivars in the leaf area index (LAI) at the flowering and seed filling stages, the crop growth rate (CGR) from the flowering stage to the seed filling stage and the seed yield. In 2012, a significant difference among cultivars was observed in the LAI and the CGR from the flowering to the seed filling stages and seed yield was definitely higher in Natto-syoryu and Tamahomare than in the other cultivars. In both years, a significant difference in the occurrence of delayed stem senescence was observed among cultivars, and the stem senescence markedly delayed in Enrei and Tachinagaha. The days from sowing to maturity in Enrei and Tachinagaha were shorter than that in the other cultivars. In particular, the delayed stem senescence occurred in the cultivars with shorter days from sowing to flowering. In conclusion, to obtain high quality and high yield soybean sown in May in south Kanto, it is desirable to use the cultivars with longer days from sowing to maturity, such as Tamahomare.

Effects of Early Sowing Cultivation on Yield and Occurrence of Delayed Stem Senescence in Several Soybean Cultivars in South Kanto

Bibliographic Information

Search this article

Abstract

Journal

Citations (1)*help

References(3)*help

Related Projects

Keywords

Details 詳細情報について

Export

Report a problem