Effect of Furrow Bottom Seeding on Ridges in Direct Seeding of Spring-Sown Onion in Tohoku

MATSUO Kentaro, YAMAMOTO Takehiko, YAMASAKI Atsushi

doi:10.4035/jsfwr.55.65

<p>We investigated the effect of furrow bottom seeding on ridges （FBSR） on directly seeded spring-sown onion in the Tohoku region. We created two plot types sown with seeds of three selected onion cultivars–Momiji-3go, Ohotuku-222 and Maruso – sown at the bottom of furrows on ridges （Furrow plots） and at the top of the ridges （Top plots）. A furrow on ridges was 10 cm wide and 6 cm deep. Daily minimum soil temperature and soil moisture beneath the Furrow plots were higher than beneath Top plots. Daily maximum soil temperature was lower beneath the Furrow plots than the Top plots. The seedling emergence rate at 20 days after sowing and average plant height at 62 days after sowing were higher for Furrow plots than Top plots for the three cultivars. The day when at least 50% onion tops fell over （DFO） was later in the order of Momiji-3go, Maruso and Ohotuku-222 in both Furrow plots and Top plots. The DFO of Momiji-3go for Furrow plots was 8 days earlier than for Top plots, and corresponding onion bulb weights for Momiji-3go were 68.4 g and 50.5 g, showing a small difference. However, onion bulbs of Maruso and Ohotuku-222 for Furrow plots were 1.6–1.8 times heavier than for Top plots. The onion bulb shape for Furrow plots tended to be slightly more elongated than for Top plots, but this was not a problem because the length-to-diameter of bulbs was less than one. For direct seeding of spring-sown onion in Tohoku, FBSR accelerated germination and growth and increased yields more for later cultivars. </p>

Effect of Furrow Bottom Seeding on Ridges in Direct Seeding of Spring-Sown Onion in Tohoku

Bibliographic Information

Search this article

Abstract

Journal

References(4)*help

Keywords

Details 詳細情報について

Export

Report a problem