Newly Posted Articles

B. DIGBYANA VAR. FIMBRITELA: Culture

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Takes practically full sunlight, liberal watering and a night temperature of 60 deg. F. A63-390 Many are reluctant to flower; buy only those with evidence of flowering; hang high and dry; if it ... Read More

ALGICIDES: Condensation Drip From Air Cap Insulation Promotes Algae

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago To render drip harmless spray with Physan 20, 1/2 tpg. A79-124 Read More

CYMBIDIUMS: Fertilizer for Blooms

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Mix your own 2-10-10: 3.6 lbs. of Ammonium phosphate (16-20-0); 1 lb. Urea (45-0-0); 5.6 lbs. Phosphoric acid (0-75-0); 10 lbs. Potassium sulphate (0-0-50); 30 lbs. water; makes 4.5 gals, concentra... Read More

KEIKIS: On Phalaenopsis lueddemanniana

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Culture is the key; possibly too little light, or too much water or potting medium too dense; over-fertilizing also causes keikis to appear. A77-449 Fertilizer at the rate of 50 ppm. could cause... Read More

NUTRIENT DEFICIENCY: Problems

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Deficiencies of nitrogen, phosphorous and others explained and described; fertilizer injury; for comments refer to A67-472+; AH47 Read More

PLANTS: New to Your Greenhouse

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Welcome them with an invigorating libation of a sugar solution at the rate of 3ttpg. and moisten them with the spray; or, crush one Stress Tab (B vitamin) in a gallon of water and anoint them; or, ... Read More

PETAL BLIGHT: Caused by Fungi Other Than Botrytis

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago 16 other fungi have been found as causes; many are saprophytes living on decaying leaves, flowers, potting mixes; all such must be removed from under benches and bench tops; periodical spraying of ... Read More

PETAL BLIGHT: Botrytis

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It is common during cool, damp weather, with poor air circulation; most harmed by it are cattleya and phalaenopsis flowers; destroy all infected blossoms quickly, spray with benomyl (Benlate 50W) a... Read More

PESTS AND DISEASES: Bacterial, Fungal, Viral

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago For an extended and timely treatment of pests, rots, fungus, virus, with colored illustrations for identification, symptoms, controls, etc., refer to A82-237; 382; 479; 593; 719; A86-1027;also OBIV... Read More

PESTICIDES: Vulnerable Parts of the Human Body

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago All parts; the most vulnerable are: the skin, particularly of the scrotum, the upper legs and the lower trunk area; one drop or two of a common organophosphate such as parathion, sulfotepp, etc., o... Read More