Dr. Hara was asked why there is less leaching of nitrate and more leaching of ammonium from upland
soils if pellets are applied. He replied that there is usually rapid leaching from compost in upland soils.
However with pellets, nitrification is slower because the pellets retain their shape and are anaerobic inside.
He was also asked whether pellets involved any increase in the total leaching of total nitrogen content,
compared to ordinary compost. He replied that pellets and ordinary compost are much the same in this respect.