Abstract
Thiamine adhered on the foliage of rice plant was well absorbed in proportion to its concentration. The absorption rate was influenced by the pH of medium and was different with the forms of thiamine derivatives. In parallel with increase in the free form of thiamine, the leaves became also rich in the ester form. Over 5 per cent increase in the crop of grain was observed by the foliar application of thiamine in a range of 0.3 to 6 mg per stubble in the fields, and 10 per cent increase was als observed when the plant was grown in the nutrient solution containing 0.01 μg of thiamine per ml.
