| Brown Spots | Comments |
|---|---|
| BROWN SPOTS: Bacterial Disease Pseudomonas cattleyae; affects many genera; starts as soft water-soaked lesion becomes brown or black; advances rapidly; kills seedlings; occurs on leaves of older plants; spreads to growing point; exudates; highly infectious; on cattleyas it is limited to older leaves and is generally not fatal; spray with Physan at 1.25 tpg. monthly; use Natriphene three-quarters tpg. (1:2000) or Tersan 75. B39; BU48 | 0 |
| BROWN SPOTS: Caused by Bacteria Phytomonas (Pseudomonas?) cattleyae; affects cattleyas and others, especially serious on phalaenopsis and young seedlings in community pots; soak plant in Anti-Damp or Natriphene. A73-815 | 0 |
| BROWN SPOTS: Caused by the Bacteria Pseudomonas Cattleyae It affects phalaenopsis and others; control with Fermate, Benlate, then use Physan. Fi81-218 | 0 |
| BROWN SPOTS: On Cattleyas May be caused by excessive spraying with chemicals. A75-618 | 0 |
| BROWN SPOTS: On Phalaenopsis Bacterial rots are caused by cool, moist conditions; keep foliage dry and lower the humidity at night; follow scrupulous sanitary measures; the fungicide Subdue is effective but expensive at $75.00 a quart. A85-605 | 0 |
| BROWN SPOTS: Pseudomonas Cattleyae The most common and the most severe disease of phalaenopsis; water-soaked lesions show first; it advances rapidly; it kills the plant when it reaches the crown; splashing water spreads it; spray with Physan 1/2 ttpg.; repeat. AH86-75 | 0 |