Most of the water soluble nutrients present in rice, vitamins such as thiamin, riboflavin, niacin, minerals such as phospho¬rus, calcium, and iron loose starch granules and proteins are washed away with the water after washing the rice. If the wash is not used immediately (i.e within two days), it will smell bad indicat¬ing the presence of microorganisms
The results from the pH testing show that "hugas-bigas" is acidic. This proves that "hugas-bigas" has more components than ordinary water that is responsible for its acidity. These components include dirt and nutrients that come from the rice itself. Rice comes from threshed palay. The brown husk of the palay is where the stored food is located. Thus, even after threshing rice will have some nutrients on its surface which, when washed, will mix with the water. The first washing has a higher pH than the second washing. The soil used was mildly acidic.
The pH data may be correlated with the height of the pechay plants. The plants treated with the 100 percent concentration of the first washing showed the least growth because the "hugas-bigas" proved to be acidic and thus became a deterrent to the plant. The ones planted in the 50 percent second washing showed the best results.