Chemical control of balsam wooly aphid (Homoptera: Adelgidae) on seedlings of Abies amabilis

Assessment was made of the effectiveness of four insecticides for eradicating <i>Adelges piceae</i> (Ratz.) from Abies seedlings. Seedlings with overwintering immature aphids were top dipped in the insecticides in fall or spring (before or after cold storage), while those with mature, egg-laying aphids were treated in spring. The overwintering immature aphids were completely killed by all of the insecticides and it was recommended that any one of the following treatments would provide sanitation of <i>Abies</i> from aphid during this stage: 1.0% propoxur suspension; 2.0% carbaryl suspension: 2.0% Insecticidal Soap solution; 0.5% permethrin emulsion. Treatment of mature aphids was less effective due to relative tolerance of bwa eggs and it was recommended that treatment during this stage of the aphid be avoided

Winter 1976

Lawn Fertilization (3) Turf Conference Reminder (4) Perennial Ryegrass Variety Trial--Performance in 1976 (5) Red Fescue Variety Tiral--Performance in 1976 (7) University of Massachusetts Turfgrass Research Fund (10) Will Congress Control the Chemical Industry? (11) Kentucky Bluegrass Variety Trial 1973--Performance in 1976 (14) Kentucky Bluegrass Variety Trial 1974--Performance in 1976 (18

Winter 1973

Field Evaluation of Insecticides for Controlling Mole Crickets in Turf (page 3) Calculations for Turfgrass Culture II: Pesticides (6) Progress in the Control of Turfgrass Weevil, a Species of Hyperodes (9) A Look at USDA\u27s Biological Control of Insect Pests: 1888 to Present (14) Turf Bulletin Index 1970-1973 (23

Summer 1974

The Fertilizer Fight (page 3) Ammonia Production Must Receive Top Priority (4) Back and Beyond (9) Herbicides--Are They Safe? (10) Maintenane of Poa Annua (17) A Responsible Neighbor (19) University of Massachusetts Turfgrass Research Fun (20

Spring 1976 Conference Issue

Herbicide Evaluation for Crabgrass Control 1974-1975 (page 3) Growth Retardants on a Kentucky Bluegrass and Red Fescue Turf Stand (4) Herbicide trials on Broadleaf Weeds 1975 (4) Dollar Spot Fungicide Control Trials--1975 (6) GOLD-N, A Sulphur-coated Urea from ICI (8) Turf Conference Program (10) Priorities Given for OSHA Inspection Stops (19) UMass Turf Research Fund (19

Knowledge Organization and Inference Engine for the WVU Face Decision Support System

The knowledge-based organization for the West Virginia University Face Decision Support System is given, along with the initial development of the associated inference engine. The knowledge base contains generic knowledge about underground coal mines that utilize continuous miners. A typical knowledge entry is given, and the inference engine methodology is explained. The engine utilizes this knowledge with data from monitoring systems and from interaction with the section foreman, to assist in making section management decisions and plans

Fall 1973

The Metric System--Future (page 3) The Metric System and Small Business (5) Performance of Five Fungicides for Control of Snow Mold (11) The Making of a Label (13) Calculations for Turfgrass Culture 1: Fertilizers (17

Spring 1975 Conference Issue

Professionalism (page 3) Back and Beyond (4) Kentucky Bluegrass Variety Trial (5) Perennial Ryegrass Variety Trial (7) Tall and Hard Fescue Variety Trial (9) Red Fescue Variety Trial (9) Turf Conference Program (10) Turf News (14) You Can Make It Easier to Collect Soil Samples (15

Chemical control of balsam wooly aphid (Homoptera: Adelgidae) on seedlings of Abies amabilis

Assessment was made of the effectiveness of four insecticides for eradicating Adelges piceae (Ratz.) from Abies seedlings. Seedlings with overwintering immature aphids were top dipped in the insecticides in fall or spring (before or after cold storage), while those with mature, egg-laying aphids were treated in spring. The overwintering immature aphids were completely killed by all of the insecticides and it was recommended that any one of the following treatments would provide sanitation of Abies from aphid during this stage: 1.0% propoxur suspension; 2.0% carbaryl suspension: 2.0% Insecticidal Soap solution; 0.5% permethrin emulsion. Treatment of mature aphids was less effective due to relative tolerance of bwa eggs and it was recommended that treatment during this stage of the aphid be avoided

Winter 1975

Tall and Hard Fescues: Variety Trial Summary 1974-1975 (page 3) Red Fescue Variety Trial (4) Kentucky Bluegrass Variety Trial 1974 (4) Perennial Ryegrass Variety Trial (5) Kentucky Bluegrass Variety Trial (7) Lawn Specialists Find Liquids Fit the Bill for Urban Customers (8) Back and Beyond (10) Impact of Chemical and Mechanical Site Preparation on Wildlife Habitat (14) UMass Turfgrass Research Fund (20