Category: Culture

CARBONATE OF AMMONIA: As Fertilizer

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Small pieces, walnut size are placed near the heating pipes and their evaporation carries nitrogen to plants where it seems to be absorbed; one pound per year can be used in a greenhouse 20 ft, by ... Read More

CARBON MONOXIDE: Great Damage to Plants Claimed

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Damage likely caused by some other agent, more likely ethylene; orchids are most sensitive of all plants to ethylene. A72-534 Read More

FERTILIZERS: With Micronutrients

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago They are of questionable real value; it is probably false advertising to claim otherwise. OD67-221 Read More

FLUORESCENT LIGHTS: Mixed Tubes

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Cool-white with Gro-Lux, also Natur-Escent and Gro-Lux in a 1:1 ratio; four 40-watt tubes over 2 ft. X 4 ft. area is adequate light for cattleyas, miltonias, paphiopedilums and phalaenopsis. A66-92... Read More

FERTILIZERS: Top Dressing Using a 6-6-6 Formulation

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Is not recommended because the extra potash might cause injury. A79-370 Read More

CARBON DIOXIDE: To Accelerate Plant Growth

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Orchid tests carried out in Victoria, Australia with generator resulted in 25% additional growth, with spiking six weeks earlier. OD70-214 Read More

FERTILIZERS: To Promote Better Flowers

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A wide-spread error is that high-phosphorous fertilizers promote more blooms; however, a deficiency of phosphorous does inhibit blooming; a soluble 15-30-15 fertilizer at 1 tpg. about once every tw... Read More

FERTILIZERS: 30-10-10 for Plants in Tree Fern and Redwood Bark

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago The formulation is suitable the year round. A73-991 Read More

CARBON DIOXIDE: Percentages of Composition

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago In air it is about three hundredths of one percent; plants can use greater amounts to approximately 0.5 to 1%; data not related to orchids. OR72-34 Read More

FERTILIZERS: 30-10-10 with Soil Acidifiers and Chelated Iron

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A suitable fertilizer, use 1/2 tpg. at every watering but let 10% of the liquid run out of the pot for leaching action. A74-114 Read More