Newly Posted Articles

VIRUS (GENERAL): Where Does Virus Come From?

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago Two random surveys have failed to uncover any virus-infected plants in the wild; Africa, Central America, South America and Southeast Asia. F79-173 Read More

VIRUS IN PLANTS NAMED: Detector Plant

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago Spathoglottis is sensitive to any virus; seedlings on exposure to virus denote its presence in four to six wks. after inoculation as diamond-shaped spots or rings; refer to N326 Read More

VIRUS IN PLANTS NAMED: In Cymbidiums

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago Cymbidium mosaic virus; necrotic ringspot; diamond mottle; bar mottle; odontoglossum ringspot; for notes on identification, etc., refer to N323+ Read More

VIRUS: Detection and Diagnosis

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago The technical process with a light microscope; refer to A86-996; principle and applications used; indicator plants and electron microscopy; light microscopy serology; necessary equipment; incidence... Read More

TISSUE CULTURE: Advantages

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago It has increased the range of choice at the high quality level; but phalaenopsis mericlones take two to three times as long to mature and some never do; paphiopedilum explants produce short-lived c... Read More

TURKEY GRAVEL (GRIT): Granite Chips

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago Comes in several sizes; an additive to poultry feed; Calcite #2. A75-27 Read More

VITAMINS: Useful to Orchids

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago Fungi provide niacin (nicotinic acid) which enhances the growth of seedlings; folic acid (a water-soluble vitamin) and thiamine (vitamin B/l) also stimulate growth; four combinations cited; refer t... Read More

WATER (GENERAL): Heating in the Greenhouse Ceiling

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago Fifty feet of copper line painted black absorbs heat in the water which feeds both the greenhouse and the home supply, requiring less energy to bring it up to the required temperature. OIE88Mar-9 Read More

WATER SOFTENERS: Simple and Economical Solution

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago Bicarbonate hardness is eliminated by a "weak acid" ion exchange resin, a commercial process marketed as a Duolite C-4338 Tank; for particulars refer to A85-334 Read More

WATERING METHODS: Converted Washing-machine

Author is Robert M. [Bert] Hamilton (Compiler), posted over 9 years ago An old style top-loading automatic washer is required; strip it to the motor and tub; directions given for adapting fittings and valves; arranged to provide pressure feed for water and/or fertilize... Read More