Abstract:
Balanced fertilization of low land rice culture has not proven to be effective in avoiding arsenic accumulation. Accumulation of As has been found to be higher in BRRI-dhan 29 than in BRRIdhan 28 grown under similar condition. The accumulation of a few heavy metals also indicated that balanced fertilization does not play any significant role in their accumulation. On the other hand, excess P over the required amount could help decrease accumulation of As in an upland crop of kangkong. When amaranthus was grown with balanced fertilizer, half that of balanced and one and a half times more than the balanced fertilizer, the balanced fertilizer could keep the accumulation of the heavy metals in the minimum. It seems that cropping system has a role to play in the accumulation of As and heavy metals when they are fertilized. The paper presents some findings in this regards.
