Newly Posted Articles

SELF-POLLINATION: Undesirable

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago It is a characteristic of Epidendrum belvederense, Dendrobium brymerianum, Cattleya aurantiaca as species or clones; they do not open their flowers well, since the self-fertilization takes place in... Read More

SELF-POLLINATION: Undesirable Habit

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago It is notable in Cattleya aurantiaca and others; the stigmatic fluid spills into the anther cap and the pollen tubes penetrate the stigma. A72-198; in some paphiopedilum species, also. A72-592 Read More

SENSITIVE OR PSYCHIC ORCHIDS: Lie Detector Used

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Experiments by Cleve Backster reported in Medical world news, March, 1969, on the use of the polygraph on plants; for details refer to ODA69-48+ Read More

NITROGEN: Best Amount for Cattleyas

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 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

OASIS: Used in Holland

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago It is broken up into pieces about one-half inch in size; roots of cymbidiums encompass the medium into a root-ball mass. OA84-12; OIE86Sept-10 Read More

NITROGEN: Optimal Amounts

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago 100 parts ppm. appear to be optimal for phalaenopsis and cymbidiums, for cattleyas, 50ppm. SA85-168 Read More

NECROTIC STREAKS AND PITS: Caused by Cymbidium Mosaic Virus

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago It affects cattleyas, epidendrums, laelias, phalaenopsis, lycastes, miltonias, oncidiums, vandas; in the early stage it resembles false spider mite injury; there is no remedy. A73-818 Read More

NECTARS: Production of Nectars on Plants as Exudates

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Floral and extra-floral exudates contain sucrose, fructose and glucose, but no exotic sugars. A71-1092; they occur more often where there is a big change from day to night temperatures. F74-33 Read More

PAPHIOPEDILUMS: Warm Growing Species Grown with Phalaenopsis

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago They both enjoy good phalaenopsis cultural conditions. A83-1156 Read More

BLACK ROT: Tips of New Cattleyas Turn Brown

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Caused by a fungus; remove all infected growth; soak pot and plant in 1/2 tpg. Dexon-35 or Benlate. A72-686; F69-94 Read More