Category: Ailments

NEMATODES: Small Worm-like Creatures

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Usually associated with the soil, in orchids with the rhizome and potting mixes; surgery of the affected parts will help reduce incidence. P71(3)23; use sterilization of the potting medium. S195 Read More

NEMATODES: Three Kinds Have Been Found

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago One in Hawaii feeds on and kills the buds of terete vandas; one causes root lesions in cymbidiums in California, and one infests leaves in New Zealand; rare. N330 Read More

BLACK ROT: On One-inch New Growths

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago This indicates a root disease; dip in Banrot solution ltpg., before repotting; another fungicide to try is Subdue, which may be effective. A81-393; RMH Read More

NEOSPORIN: Controls Crown Rot

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A patent medicine for cuts and scrapes, in a pfcferoleum base has three antibiotics as ingredients; apply with a toothpick. OIE86Nov-5 Read More

NEOSPORIN: For Control of Crown Rot

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Both the ointment and the opthalmia solution have been uses with good results; it's an antibiotic, contains polymicin B, bacitracin, neomycin, and may be available only on prescription; Polysporin ... Read More

NITROGEN DEFICIENCY: In Bark

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The function of organisms; leaf coloring significance; growth; correction; for analysis, refer to A67-472+ Read More

NECROTIC STREAKS AND PITS: Caused by Cymbidium Mosaic Virus

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It affects cattleyas, epidendrums, laelias, phalaenopsis, lycastes, miltonias, oncidiums, vandas; in the early stage it resembles false spider mite injury; there is no remedy. A73-818 Read More

BLACK ROT: Tips of New Cattleyas Turn Brown

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Caused by a fungus; remove all infected growth; soak pot and plant in 1/2 tpg. Dexon-35 or Benlate. A72-686; F69-94 Read More

BLACK ROT: Pythium Sp. of Fungi

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago On cattleyas; cut rot away ruthlessly; burn the compost; immerse plant in Orthocide captan at 1 teaspoon to 1 pint water for one hour. OR76-99 Read More

BLACK ROT: Pythium Ultimum

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Most destructive of cattleyas, others are susceptible; similar symptoms to Phytophora cactorum; small water-soaked spots, later turn purplish black; yellow margin advances; spread quite rapid, 2 or... Read More