Category: Orchid Doctor

FUSARIUM WILT: A Rot Disease

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Plants decline and die in a year; the cut rhizome has a band of purple in the epidermis as a sign; drench or dip in benomyl (Benlate 50W) at lttpg. AH86-74 Read More

FUSARIUM WILT: F. Oxysporum and F. Monoliforme

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago They infect through the roots or cut ends; a band of purple discoloration shows; entire rhizome may be purple; cut out diseased parts; spray with Actidione 1 ttpg. (highly toxic to humans) N317 Read More

FUSARIUM WILT: Fusarium Monoliforme

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A fungus causes slimy brown rot of cymbidium seedlings and cattleya pseudobulbs and leaves; may form a white mat over fir bark and roots, preventing absorption of nutrients. OD67-13 Read More

FUSARIUM WILT: Fusarium Oxysporum

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Rather new and a serious fungus disease of roots of various genera; infects newly cut divisions; may live a year; looks like Pellicularia filamentosa; yellow and shrivelled leaves and pseudobulbs b... Read More

FUSARIUM WILT: Shiny Brown Rot

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago On cymbidiums and cattleya seedlings and others; it can also appear as a white mat over fir bark and the roots, and prevents absorption of nutrients. Fitch: All about orchids (1981)-217 Read More

FUSARIUM WILT: Two Kinds Do Damage

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago They enter through roots or rhizome; they plug the water-conducting tubules; infected parts turn purple; cut off all infection; use Actidione (using great caution) or, dip the plant in Benlate (ben... Read More

GALVANIZED WIRE: Toxicity on Hardware Cloth

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It is present but not great; use a fertilizer containing some phosphorous which will tend to keep the wire coated against zinc phosphate dissolution. A71-917 Read More

GARLIC: Insecticide

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Developed by Henry Doubleday Research Assoc.; 3 oz. chopped garlic with 2 teaspoons liquid paraffin are left to soak 48 hours; then add 1 pint water; mix well with 1/4 oz. spreader; filter and stor... Read More

GAS: Effect of Ethylene on Plants Indoors

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Gas ranges in the home may produce ethylene to injure opening buds; natural gas contains no ethylene but the burners on starting, for 17 seconds, and on stopping, for ten seconds, emit small amount... 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