| Vitamins | Comments |
|---|---|
| VITAMINS: As Additive in Fertilizer Circumstances make the rules invalid; test before making large applications; some other less pertinent suggestions made. F85-8 | 0 |
| VITAMINS: As Plant Growth Substances A brief review of some, such as thiamine, niacin, biotin, ascorbic acid, yeast; refer to OA83-52; refer also to OBIII-201; OBII-269, etc. | 0 |
| VITAMINS: Useful to Orchids Fungi provide niacin (nicotinic acid) which enhances the growth of seedlings; folic acid (a water-soluble vitamin) and thiamine (vitamin B/l) also stimulate growth; four combinations cited; refer to OR74-342; for scientific review refer to OB1-160-175 | 0 |