Category: Orchid Doctor

FERTILIZERS: Ideal Fertility Frequency

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Use low concentration of dissolved fertilizer at every watering; avoid excess deficiency conditions. PD67-219 Read More

FERTILIZERS: In Parts Per Million

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Six hundred parts of fertilizer to one million parts water passing through a cymbidium is the maximum. AU79-37 Read More

FERTILIZERS: In Tropical Forests

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Sources include birds (very little), bats (their presence encourages growth but just why is not explained), monkeys (destructive of plants), ants (an effective part but on a very localised scale), ... Read More

FERTILIZERS: Injury Caused by

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A frequent problem; only 2% of the composition of the plant tissue includes mineral content; over-fertilization inhibits growth; diluted liquid fertilizers are best; nature of damage caused and des... Read More

FERTILIZERS: Inorganic, Made From Chemicals

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Can be compounded to exact specifications; makes them flexible and adaptable to special conditions and trace elements can be added as required. A70-140 Read More

FERTILIZERS: Liquid Versus Slow-release

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A liquid programme is preferable because 1. the feed can be accurately measured, 2. the feed can be applied with the watering, 3. liquid feeds are much less expensive. AU84-202 Read More

FERTILIZERS: Liquid, for Cattleyas in Fir Bark

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Rutgers University's urea-form formulation: 1st. application is finely powdered ureaform three heaping tablespoons of ureaform with 20-20-20 two level teaspoons together to five gallons water; subs... Read More

FERTILIZERS: Liquid, for Cymbidiums

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Rutgers University1s formulation applied one, three or four weeks according to season: per 100 gallons water add 12 oz. of 20-10-10 plus six ounces of 20-20-20, plus four ounces of ammonium nitrate... Read More

FERTILIZERS: Liquid,general

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Rutgers University1s formulation is 20-20-20, 1 teaspoon plus ammonium nitrate 2 tablespoons together to five gals. water for every other watering. A59-508 Read More

ACID OR ALKALINE: Changing the Values

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Various means can be used: tufa, a limestone form, can be added to paphiopedilums from limestone cliffs; bark composts acidify with age; peatmoss, pine needles, oak leaves in the mix produce acidit... Read More