Computer Modeling and Simulation of Plant Development

Management
The Oregon State University affiliated author discusses the use of computer modeling and simulation of plant development. The discussion includes various different ways growers could use the technology to improve multiple aspects of their operation.

Programmed Plant Development

Post Harvest
The author discusses the programmed plant development of bare-root of deciduous trees and controlled environments to ensure plants goes though the required developmental stages post field removal in order to be acclimatized to new environments.

Grafted Tree Survival Increased, Grafting Season Extended by Inexpensive Hot-Callusing Device

Propagation
Studies were conducted to test the effectiveness of using a hot-callusing device when grafting a variety of different trees. The authors discuss the results of the hot-callusing method and it's effects on apple, peach, pear, prune, and Douglas-fir trees.

Production of Caliper Trees by Use of The "Minnesota System"

Nursery Crops
The University of Minnesota affiliated author discusses container production of caliper shade trees. The "Minnesota System" was designed to address the following problems; root circling in the container, winter injury of root system, and tipping over in windy weather.

Branching of Photinia X Fraseri in Response to Atrinal and Other Growth Regulators

Culture
The use of growth regulators in the greenhouse or nursery to chemically prune plants was studied, specifically Atrinal applied to Photinia x fraseri, in an effort to determine the effect on branching habit and height of the plant. The methods and results are discussed.

Gypsy Moth in Washington

Insects
The gypsy moth was detected in the Seattle, WA area in 1977 using pheromone (female sex scent) traps. The author discusses the gypsy moth in regard to; local history, the problem involving gypsy moths, eradication efforts, and the efforts nurseries could make.

Osmocote & Minor Element Formulations & Rates for Growing Nursery Stock in Containers

Fertilizer
Fertilizer trials involving Osmocote and minor element formulations were conducted in 1979 in British Columbia to determine appropriate formulation, the rates to be used, and how long the formulations lasted in their sawdust:peat mixes.

Differential Feeding on Rhododendron by Adult Root Weevils

Insects
Field studies were conducted to determine if adult root weevils feed on certain cultivars of rhododendron more than other cultivars. The author discusses the methods and results of the studies, including the difference in resistance of the cultivars used.

Progress Report on Research in Black Vine Weevil Control

Insects
An update on research that was conducted in Black vine weevil control based on what had been on going research for black vine weevil control for both larva and adult. The researchers discuss their results and offer control tactics they found successful.

Chlorination of Water

Irrigation
Oregon State University affiliated author James Green, Extension Ornamental Specialist, discusses the practice of chlorinating water. Included in the discussion are characteristics of; chlorine, salts of hypochlorous acid and other chlorinating compounds.

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