Pengaruh inokulasi Strain Nostoc cpg24 dan gia13a di hari ke 1 dan ke 10 pembibitan padi (Oryza Sativa L} Varietas Ciherang pada beberapa media tanam = The effect of inoculation of nostoc strains cpg24 and gia13a at the 1st and 10th day on the germination of Ciherang rice oryza sativa l in several media