Studies on the Nutrition of Rice Plant with Reference to Hellminthosporium Leaf Spot (Preliminary report) : IX. Absorption of Nutrients by Root and Metabolism of Nitrogen and Carbohydrate in Plant as Affected by Hydrogen Sulphide.

Abstract

To elucidate the influence of H₂S on nutrient absorption and metabolism of nitrogen and carbohydrate, a solution culture experiment was carried out. Just after the addition of H₂S to the solution, absorption of K₂O and SiO₂ was inhibited at first accompanied with such disturbances in carbohydrate metabolism as an increase in reducing and non-reducing sugar contents, and a decrease in starch content. But afterward when the inhibition of nutrients absorption and carbohydrate metabolism became extreme, nitrogen metabolism was also disturbed, resulting in the increase in soluble-N content and decrease in protein-N content.