Newly Posted Articles

PLEIONES: Cultural Requirements

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Provide bright light short of sun scorch; 55 to 60 deg.F. recommended for night temperatures; water freely until the fall growth slows down; the leaves fall when growth is complete; reduce watering... Read More

POLLEN: And Viability

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago When freeze-dried under vacuum its viability is maintained for years; if not stored properly its viability is two or three months. A68-911; ODA76-25 Read More

PHYSAN 20: Sterilizer

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago It takes 10 or more minutes to sterilize tools in it. A79-1022Plastic pots can be disinfected in a solution of 1 ttpg.; rinsing afterwards is not necessary as the plants are not harmed on contact. ... Read More

POLLEN: Too Big to Apply to a Tiny Stigma

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Put some stigmatic fluid from the "female" or pod parent on a sterile surface, crush the pollen in it, stir to a paste, apply to the cavity of the "female" parent; it may help to use some stigmatic... Read More

POLYETHYLENE FILM: As Greenhouse Insulation Liner

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Use the regular type rather than the ultraviolet resistant type because the former is adequate; greenhouse glass filters out rays shorter than 312 millicrons. A68-911 Read More

POLYETHYLENE FILM: Liner for Greenhouse

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago For conserving heat the most economical is the 4 mil polyethylene; it provides a slight shading effect. OD78-2 Read More

POLYGAL: Greenhouse Covering Materials

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago Made with two layers of plastic with dead air space between to conserve heat by providing insulation. A87-1171 Read More

POLYPLOID: Meaning

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago A clone with three or more chromosome sets; they exist with five, six, eight and even sixteen times the haploid number. AU78-47 Read More

POLYPLOIDY: It Influences Plant Improvement

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago In flower characteristics; its effect on fertility; in production of flowers, refer to AS5-1445; OBIII-325 Read More

POLYPLOIDY: Possible Induction by Cold Shock

Author is Robert M. [Bert] Hamilton (Compiler), posted over 7 years ago In cymbidiums, cold can alter cell division with some surprising genetic consequences, even mimicking the effect of colchicine. OA80-108 Read More