Effects of Drip Fertigation with a Satellite System on Seeded Onion Yield in Hokkaido, Japan:

DOI Web Site 24 References

Bibliographic Information

Other Title
  • 衛星システムと連動したドリップ・ファーティゲイションが北海道直播タマネギ収量に及ぼす効果：
  • Lessons Learnt from On-farm Experiments.
  • オンファーム実験としての考察

Abstract

<p>Direct seeding has become increasingly popular in an onion cultivation in the last decade, especially in Hokkaido. Although direct seeding can save time and costs of raising seedlings, onion farmers usually face three challenges. First, the germination rate of seeded onions is not good. Second, direct seeding makes it more difficult to control weeds than transplanting. Third, herbicides for weeds also cause damage to seeded small onions. It is vital to enhance the initial growth of seeded onions to solve these problems. The purpose of this study was to confirm whether drip irrigation/fertigation with a satellite system could enhance the initial growth of seeded onions and increase the yield in the actual commercial field of Hokkaido as an on-farm experiment. The results in 2021 showed that germination rate of drip fertigated plot was at 95%, while conventional cultivation plot was at 75%. We also confirmed that drip fertigation enhanced the initial growth. The yield of fertigated onions was 1.8 times greater than the yield by conventional cultivation. At the same time, we could decrease nitrogen fertilizer by 16% compared with the conventional value. Drip fertigation also increased the percentage of larger onion bulbs. The results also confirmed that the satellite image analysis was valid and useful to estimate the quantity of evapotranspiration and decide the amount of irrigation water. For these reasons, drip fertigation systems with satellite image analysis should be considered one of the best methods for direct seeding of onions.</p>

Journal

References(24)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top