Category: Orchid Doctor

CHARCOAL: In Culture Media

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Has a positive effect on the growth of cymbidium plantlets in the flask, also phalaenopsis and paphiopedilums because it seems to improve aeration. A84-258It seems to improve aeration; for other de... Read More

CHARCOAL: In Cymbidium Mix

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Has many good qualities to recomend it; used in many parts of the world; one questionable point is its filtering effect whereby modern insecticides and fungicides added to the mix may be adsorbed a... Read More

CHARCOAL: In Potting Mix

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Many growers add about 10% of the fine grade in a mix. Van.O.S. Bull.Dec.-87 Read More

CHARCOAL: Potting Medium

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Oak charcoal with a pH of 6.5 to 7.5 has the least effect on the pH of the mix; adsorbs cyclic organic compounds; is safe for plants but its main advantage is physical support. A81-1311 Read More

CHARCOAL: Properties

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Investigation of cationic exchange capacity; retention of nutrients; bacterial activity; high water holding capacity; and a high bacteria activity; feed organic type fertilizers to it; lasts foreve... Read More

CHARCOAL: Supermarket Type Is Useful

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago But not if it is processed into briquettes which have a petroleum binder. A75-876 Read More

CHARCOAL: Used in Potting Mixes

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It is popular in England and S.E.Asia; comprises 15 to 30% of the mix in England. A79-584 Read More

CHELATED IRON: Is it Beneficial for Orchids in Bark?

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Considered doubtful. A67-45 Read More

CHELATING AGENTS: Added to Fertilizers

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In inorganic fertilizers they increase the solubility and the uptake of nutrients. P68(3)8 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