Newly Posted Articles

WARDIAN CASES: Thirty Plants Under One Fluorescent Tube

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago Resulted in the plants turning white and yellow from lack of light mainly; needed are four fluorescent tubes four ft. long; the plant leaves should be three inches below the lights, A63-303; A69-424 Read More

WATER (GENERAL): Lack of It

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago If the plant parches during its growing cycle, it can abort its spike. OA84-20 Read More

WATER (GENERAL): Leaching Effect

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago When pots are leached with water more nitrogen than phosphorous or potassium is leached out. A73-991 Read More

WATER (GENERAL): Testing for Impurities

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago Los Angeles water tests about 300 ppm. of impurities, which is the "edge" at which New Zealand moss develops live stalks in the pots. OD87-155 Read More

WATER (GENERAL): Testing for Water Content in Pots

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago An electronic moisture meter (M-Scape Moisture Comparator) is useful to determine whether there is water in the root zone. OD65-172 Read More

WATER (GENERAL): To Change the Ph Level

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago If the reading is below 5.0 it can be raised by adding sodium hydroxide; a local water conditioning company could advise. A88-35 Read More

WATER (GENERAL): Trace Elements in

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago Many water supplies contain useful amounts if they are about 40ppm calcium, 20ppm magnesium, 2ppm iron, and less than 1ppm. of boron, zinc, copper, magnesium, sodium or chloride, you do not need to... Read More

LEAF-SPOT: Soft Spots Slowly Cover the Whole Leaf

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago The condition should be treated early with Truban, 1 to 1.5 tpg. thoroughly even to the point of drenching, after removing the blackening leaves; if Truban is unavailable use Lesan (Dexon). A81-688 Read More

WATER (GENERAL): Treatment in Holding Tanks

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago Contamination of water by bacteria, etc., can be eliminated by excluding all light and treating the tank with 45 grams (H oz.) of 35% Lesan, or, 23 grams (1 oz.) of 70% Lesan per 100 gallons of wat... Read More

WATER (GENERAL): Well Water

Author is Robert M. [Bert] Hamilton (Compiler), posted over 8 years ago Is it too alkaline with a pH of 8?; the total salt content should be determined to see if the pH is significant and warrants treatment;for acidifying it is better to use nitric acid or nitric combi... Read More