Time course transition of soil solution composition and its cation balance during repeated vegetable production using salt-concentrated compost

DOI JASI Web Site 22 References
  • EBATO Munehiro
    National Institute of Livestock and Grassland Science, Nasu Research Station:(Present office)National Institute of Livestock and Grassland Science, Miyota Research Station
  • KURIBARA Mitsue
    Livestock Industry Research Center, Fukushima Agricultural Technology Center

Bibliographic Information

Other Title
  • 高塩類堆肥を用いた野菜栽培での土壌溶液組成および陽イオンバランスの経時変化(2) : コマツナ連作栽培の場合
  • コウエンルイ タイヒ オ モチイタ ヤサイ サイバイ デ ノ ドジョウ ヨウエキ ソセイ オヨビ ヨウ イオンバランス ノ ケイジ ヘンカ 2 コマツナ レンサク サイバイ ノ バアイ

Search this article

Abstract

On the grounds that salt-concentrated compost is a valuable organic fertilizer, we investigated the effects of successive applications on the growth of komatsuna (Brassica rapa var. peruviridis) and on soil by investigating the time course transition of the soil solution composition and its cation balance, and crop yield. In the first pot experiment, komatsuna was grown 4 times in succession in an Andosol and a Brown Lowland soil (Fluvisol) with chemical fertilizer, ordinary compost, or salt-concentrated compost. Although aboveground dry-matter yields with salt-concentrated compost tended to be higher than those with ordinary compost from the first to the third crop on both soils, they were significantly lower in the fourth crop. As the amount of salt-concentrated compost increased, the concentrations of Ca and Mg in komatsuna decreased. Soil electrical conductivity increased with the amount and number of applications of salt-concentrated compost. The values of AR^<K+Na>, which were used to estimate the cation composition of the soil solution, decreased to a steady level by the beginning of the third crop. The results suggest that the yield decline caused by repeated application of salt-concentrated compost was due to both an increased soil solution concentration and its unsuitable composition, which prevented the komatsuna from absorbing Ca and Mg from the soil solution. In the second pot experiment, in which komatsuna was grown in the Andosol with salt-concentrated compost applied at 10 or 20Mg ha^<-1>, co-application of dolomite at 5Mg ha^<-1> improved the soil solution AR^<K+Na> immediately, and the yield of komatsuna increased accordingly.

Journal

References(22)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top