PHYSIOLOGICAL REACTION OF BRASSICA RAPA L. VAR. PERVIRIDIS L. H. BAILEY PLANTS CULTIVATED ON SALINIZED SOIL WITH ZEOLITIC TUFF AND PEAT

Abstract

Our observations target the physiological response of plants with a short vegetation period like Brassica rapa var. perviridis L. H. Bailey to saline stress. The experiment uses white alkali soil amended with zeolitic tuff and peat as a substrate. There has been noticed a better behavior of the plants grown on cultivated soil amended with 15% zeolitic tuff and neutral peat. The chlorophyll content index was higher in plants grown on cultivated soil amended with 15% zeolitic tuff both when combined with neutral peat (14.0 and 30.6) or acidic peat (18.9 and 26.2) than in plants grown in soils that were amended with 20% zeolitic tuff. Regarding uncultivated soils previously, they are less favorable to plants than soils which had been included in the agricultural circuit. This proves once again that the non-use of salty lands accentuates the salinization process.

Keywords

• Komatsuna Torasan
• peat
• salinized soils
• stomatal conductance
• zeolitic tuff