マメ科牧草リビングマルチによるソルガム栽培における雑草抑制と窒素供給

DOI 日本農学文献記事索引 Web Site 参考文献19件
  • 魚住 順
    畜産草地研究所:(現)東北農業研究センター
  • 黒川 俊二
    畜産草地研究所:(現)中央農業総合研究センター

書誌事項

タイトル別名
  • Weed Suppression and Nitrogen Supply by Legume Living Mulches in Forage Sorghum
  • マメカ ボクソウ リビングマルチ ニ ヨル ソルガム サイバイ ニ オケル ザッソウ ヨクセイ ト チッソ キョウキュウ

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説明

Sods of 6 legume species established in autumn were mowed 1-3 times by late May, and then 'Tentaka' forage sorghum cultivar (Sorghum bicolor (L.) Moench) was striptill planted with no nitrogen and no herbicide application. Though weeds were severely depressed by all legume sod, the dry matter yields of sorghum varied with sod species. The sods of white clover (Trifolium repens L.), crimson clover (Trifolium incarnatum L.) and Chinese milk vetch (Astragalus sinicus L.) produced high sorghum DM yields of 14-16t ha^<-1>. These yields did not differ from those of tillage with 100kgN ha^<-1> and were 2-3 times higher than those from tillage with no nitrogen. Red clover (Trifolium pratense L.) caused a sorghum growth depression due to interference by the regrown sod. In consequence, the density of sorghum at harvest decreased by 60% of the initial value, which resulted in much lower yield than those from the other 5 legumes.

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