When first planted why are rice seeds submerged in water?

Rice seeds are submerged in water when first planted to create a suitable environment for germination and early growth. The flooding helps to suppress weeds, as many weed species cannot thrive in saturated conditions. Additionally, the water provides the necessary moisture for the seeds to sprout and establishes a favorable anaerobic environment that promotes healthy root development. This method also aids in controlling pests and diseases that may affect the young plants.