https://scholarworks.gnu.ac.kr/item/7dfc2c47-fa88-477b-9642-9b8addd878af
Coal fly ash and phospho-gypsum mixture as an amendment to improve rice paddy soil fertility
Rice is a plant that requires high levels of silica (Si). As a silicate NOD source to rice, coal fly ash (hereafter, fly ash), which has an alkaline pH and...
coal fly ashphospho gypsumrice paddysoil fertilitymixture