Newly Posted Articles

LAMINAR FLOW CABINET: A Work Area Free From Air-borne Spores

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Provides steady stream of sterile air, preventing contamination in flasking procedures. A72-1094; for a report of experiments after 15 months with Laminar-flow set refer to OR77-203+ Read More

NAMES: Common or Native Names

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago They are imprecise and inaccurate and duplicated often, so they lead to confusion; many examples given. A85-980 Read More

OHIO W.P.SOLUTION: Fertilizer Used Experimentally in Gravel Culture

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago For proportions of seven chemicals included, refer to N304 Read More

CYMBIDIUMS: Tetraploids, Spontaneous

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Alexanderi 'Westonbirt'; Pauwelsii 'Comte de Hempjtinne'; Rosanna 'Pinkie'; Shirley 'McBean's' ; Babylon 'Castle Hill'; Babylon 'Carpentier'; Vieux Rose 'Dell Park'; Pearl Easter 'McBean's'; Dorama... Read More

NUTRIENT DEFICIENCY: Problems

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Deficiencies of nitrogen, phosphorous and others explained and described; fertilizer injury; for comments refer to A67-472+; AH47 Read More

SOLAR RADIATION: U.S. Cities Table

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Three-year average solar radiation square feet of horizontal surface for peak summer months; about 70 cities listed; highest radiation is in Phoenix with 200; lowest is Caribou, ME. at 115. (RMH) Read More

PESTICIDES: Excessive Uses

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A preventive spraying program leads to phytotoxicity in the plants. A76-698 Read More

PSEUDOBULBS: Disfigured by Horizontal Cracking

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago These unusual splits are physiological disorders which weaken the pseudobulb: and easily cause breaking, sometimes by its own weight. A85-1335 Read More

COMPOST: Sterilizing to Eliminate Virus

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Cymbidium compost can be heated to 180 to 190 deg.F. for thirty minutes. A71-21 Read More

MILTONIA SCORCH: Bacterial Tip Burn

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Appears only on miltonias; not yet identified; cool temperatutes cause it; extremely infectious; water-soaked spots appear on edge of leaf, often on the new ones and spreads to pseudobulbs which tu... Read More