Pemberian Abu Sekam Padi Dan Fosfat Alam Pada Medium Ultisol Untuk Meningkatk…

ABSTRACT Rice as a staple food for most of Indonesia's population,their needs increase with increasing population, conversely production decreases. One effort to meet the needs of rice is by planting upland rice in dry land. Ultisol is the most extensive dry land in Indonesia. The yield of upland rice in Ultisol is very low, this is caused by various problems including acid reaction, high Al s…