Category: Culture

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

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The formulation is suitable the year round. A73-991 Read More

MOVING ORCHIDS: From State to State in the U.s.

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Moving especially into California requires that a health certificate be obtained from your own state Dept. of Agriculture plant inspector before crossing the state border. A73-338 Read More

MUSIC: As a Growth Promoter

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Orchid plants seem to thrive on music; classical music claimed to be better than "rock"; unsubstantiated "article". OD70-177 Read More

NITROGEN: Best Amount for Cattleyas

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago For cattleyas grown in glass marbles 50 ppm. is good; optimal is 100 ppm. equivalent to 4.5 oz. of ammonium nitrate in 100 gals, water, quite low; one oz. in 7,830 gals, is 1 ppm. C72-223; OA79-129... Read More

NITROGEN: Function as Fertilizer

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Large amounts are required for continued production of new cells. AU75-45Used by the plant to make healthy green leaves and stems; it promotes strong green foliage. A70-139Used in excess of require... Read More

NITROGEN: Parts Per Million for Maximum Growth

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Experiments indicated that 113 or 114 ppm., or approximately 100 ppm., equivalent to 4.5 oz. of ammonium nitrate in 100 gals. water was best. OR74-135 Read More

NITROGEN: Properties

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Regardless of application to non-orchids, final form taken up is mostly nitrate, readily absorbed by roots; readily leached from soil; forms no insoluble complexes. OD67-219; this does not hold for... Read More

NUTRITION: Principles

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Review of all aspects, from a scientific point of view; refer to A61-277+ Read More

CARBON DIOXIDE: Percentages of Composition

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 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 almost 8 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