Category: Orchid Doctor

APHIDS: Controls

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago A common aerosol insecticide spray is satisfactory; use Raid and stand back several feet from plants to be most effective; don11 use a commercial insect repellant because they damage buds and flowe... Read More

APHIDS: Controls on Cymbidiums and Reed Epidendrums

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago 1 tpg. Malathion spray; on cymbidiums also Cygon 2.67E at 2 ttpg.; perhaps also on epidendrums. A67-498; A74-708 Read More

APHIDS: Description and Activity

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago No controls given, refer to AH86-56 Read More

APHIDS: Small Soft-bodied Sucking Insects

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Yellowish, green or black; winged and wingless forms; multiply rapidly and spread thickly; cause puncture wounds on blossoms and distortion of growth; suspected of spreading virus; sometimes tended... Read More

APHIDS: Toxicity of Controls

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In increasing degree of toxicity to the user: malathion (LD50=2 oz.) dimethoate and lindane (1/2); and too toxic to be recommended was demeton (8 drops). A68-582 Read More

APHIDS: Virus Spreaders

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Aphids, scale and mealybugs spread most viruses increasingly harmful to orchids; aphids are the most active: Aphis gossypi is a spreader of 81 types of virus. A87-105 Read More

APHRODISIAC QUALITIES: Of Orchids

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Stories regarding this are generally untrue. A72-299 Read More

APOMIXIS: In Some Genera

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago In breeding they overcome the genetic make-up of other genera and produce off-spring like themselves; ansellias do this sometimes, zygopetalums do it most of the time. SA0J84June-53 Read More

APPLES: Stored in the Greenhouse

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago They give off ethylene in sufficient quantity to damage flowers. A60-771 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