Factors to Consider Before Tank Mixing Pesticides

Management
The dangers of tank mixing pesticides are addressed by the University of California affiliated author. The factors discussed include; chemical incompatibilities, physical incompatibilities, general principles for mixing pesticides, specific mixtures to avoid, and causes of phytotoxicity.

Fertility and its Relationship to Turfgrass Diseases

Fertilizer
The importance of the relationship between fertility, turfgrass, and turfgrass diseases is discussed. The author focuses on turfgrass diseases common to the Pacific Northwest and offers recommendations for fertilizer practices to help combat the diseases.

The Influence of Stress on Diseases of Nursery and Landscape Plants

Plant Stress
A discussion of the influence stress can have on diseases of nursery and landscape plants. The author addresses the increased susceptibility to disease when plants are weakened by stress, drought or water stress, excess water stress, and high and low temperature stress.

Are Herbicides Safe For Use in Greenhouses

Management
Dr. Author Bing, in affiliation with the Long Island Horticultural Research Laboratory in Riverhead, NY, addresses the issue of using herbicides in greenhouses. Specifically discussed are several different herbicides and their effect on plant growth.

Bark and Sawdust - Mulches in Maintenance Planning

Soil media
Using mulches in landscaping and gardening environments is the topic discussed by the author. Specific areas addressed are; types of mulch, effect of mulch on microclimate, effect of mulch on soil conditions, and problems in mulch selection.

Special: Plant Injury Caused by Sawdust and Barks

Media
The use of sawdusts and barks in media mixes and mulches is addressed by the Oregon State University affiliated author. The results of tests conducted to test the phytotoxic effects of two species of fresh bark are discussed along with recommendations.

Avoiding Pesticide Phytotoxicity

Plant disorders
The University of Florida affiliated author addresses how to avoid pesticide phytotoxicity in ornamental plants. The five most common types of phytotoxicity identified are; burn, necrosis, chlorosis, leaf distortion, and stunting or abnormal growth.

Irrigation and Oregon Water Laws

Water
Water availability for the upcoming growing season was a concern due to an unusually dry winter. The author discusses the legalities of Oregon water rights regarding greenhouse and nursery crops. Several different types of irrigation permits are addressed along with where to obtain them.

Pre and Post Emergence Poa Annua Control Program

Weeds
Research was conducted in an experimental program on control of Poa annua in Kentucky bluegrass lawn turf and Bentgrass putting turf. Successful control methods were established and are discussed, along with other factors to take into consideration when implementing a control strategy.

Container Soils are Different

Container Media
A discussion of the differences between container media and ground bed media in regard to water availability for plant growth. Also addressed is "the container effect", differences in soil texture, the importance of the appropriate amount of aeration, and the affects of aeration on plant growth.

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