Nutrients removal by a rice crop (cv. IR36) yielding 9,8 MT/ha of rough rice grains and 8,3 MT/ha of straw
Nutrients removal by a high yielding rice variety (‘IR64’), 12 MT/ha rough rice grains and 8,3 MT/ha of straw, by 2 - 3 crops per year.
Removal of Si and K2O are particularly large if panicles and straw are taken away from the field at harvest. However, if only the grains are removed, and the straw is returned and incorporated back into the soil, the removal of Si and K2O is greatly reduced, although significant amounts of N and P2O5 are still removed.
Optional mineral nutrition schedule for field-grown rice at expected yield of 7-10 MT/ha.