Category: Ailments

THRIPS: Distinct From Springtails

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Thrips also can be found in compost, they damage the roots at the conjunction of the new growing tip and the developing velamen, an area rich in sugars; control them with Malathion. OR82-256 Read More

THRIPS: Insecticide Control for Indoors

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago For a basement collection under lights, use Malathion but if it is not effective, use Diazinon at the rate of 1 tpg.; it may be repeated in 14 days. A81-150 Read More

THRIPS: On Cymbidiums

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago They are among the worst pests, causing spotting on flowers; the damage occurs in the form of halo dots on sepals or petals and appear very similar to Botrytis spotting; use Cygon every six weeks a... Read More

THRIPS: On Vandas and Ascocendas

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Flowers show scarred, burned, or misshapened from the feeding, especially in South Florida; control them by applying wettable powders such as Sevin, or Orthene. F81-153 Read More

VANILLA: Failed to Flower

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago It requires 50% full sunlight; fertilize only if adequate sunlight is present. A64-591 Read More

VIRUS CONTROL BY CHEMICALS: Control by Cleanliness

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Sterilize knives, used stakes, labels, pots, potting tools and by washing hands. A78-226 Read More

VIRUS CONTROL BY FLAME OR HEAT: By Heat Therapy

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Other plants have had some viruses eradicated by growing them at 95 to 100 deg.F.; heat therapy for orchids has so far failed. A79-584; OD65-106; OD78-95 Read More

VIRUS IN PLANTS NAMED: In Wild Plants

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago No Cymbidium Mosaic or Odontoglossum ringspot was found in 150 species in Florida and Guatemala, whereas 168 same or related plants from local growers in Florida showed 26% of them virused with rat... Read More

VIRUS: Basics and Prospects for the Future

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Plants, unlike animals lack a protective antibody system but virus is rarely if ever seed-transmitted, even when both parents are infected; it is unfortunate that virus do not kill their hosts; the... Read More

VIRUS: Bean Yellow Mosaic Virus

Author is Robert M. [Bert] Hamilton (Compiler), posted almost 8 years ago Allied to the Potyvirus group that have insect vectors, mostly aphids; Japanese in origin, recently reported in the U.S. OIE86Jan-9; may be spreading and could cause widespread problems. AH86-3;9 Read More