Category: Orchid Doctor

TRACE ELEMENTS: Boron, Copper, Iron, Manganese and Zinc

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago They need a slightly acid reaction in the compost for assimilation by the plants; copper and zinc are available in alkali; they readily chelate, which happens when an organic molecule envelops them... Read More

TRACE ELEMENTS: Contained in Fertilizers

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Survey of nutrient elements contained In commercial fertilizers such as Peters; Plantfood; with a table for 13 elements in MMOL per litre (actual nutrient content).OA97-201 Read More

TRACE ELEMENTS: Make Your Own Formula

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Stock solution: 1 litre of water; Boric acid (H3BO3) -- 0.143 grams; Potassium Iodide (KI) -- 0.2g; Molybdenum Trioxide (MoO3) -- 0.10g (or, Molybdic Acid -- 0.11g); Copper sulphate (CuSO4.5H2O; --... Read More

TRACE ELEMENTS: Requirements by Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Very small amounts are necessary for leaves kept in good health; ten parts per million of water, or about one tablespoon per 300 gals, water is the average; enough of them occur in tap water or in ... Read More

TRACE ELEMENTS: Treatment

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Once a month use Sequestrene 330Fe (Iron Chelate Micronutrient) at 1/4 tpg., twice in summer apply at the same strength Peters' S.T.E.M. (Soluble Trace Element Mix) at the same strength; apply Epso... Read More

TRACE ELEMENTS: Usual Ones

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Recognized are iron, manganese, molybdenum, boron, and copper. OA83-118 Read More

TRACE ELEMENTS: Usually a Good Balanced Fertilizer Contains Them

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago The major trace elements are calcium, sulphur, and magnesium; the minor elements are molybdenum, boron, chlorine, cobalt, iron, copper and zinc. A73-913; F73-173; OD70-275 Read More

TRANSPLANTING OF SEEDLINGS: From Agar to Agar

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Do a few flasks at a time; chemicals, equipment, procedures listed in detail; refer to A80-856 Read More

TREE FERN: Does it Decompose?

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It decays very slowly, depending on amounts of moisture applied, the prevailing temperature and the chemicals used as fertilizers, etc. A83-600 Read More

TREE FERN: Fertilize it or Not?

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Some growers do, some do not, and it can be treated like osmunda; it decays slowly and releases minute amounts of nutrients but lacks the wide array of organisims found in bark; a balanced fertiliz... Read More