Magnesium Deficiency in Junipers

Fertilizer
Tam and Pfitzer junipers were notice to be experiencing chlorosis and/or necrosis of certain foliage. Samples taken from several different nurseries indicated a possible magnesium deficiency causing the symptoms.

Clonal Propagation of Several Pyrus Species

Propagation
Following the success of a previous study to propagation Old Home pear (Pyrus communis) cuttings, experiments were conducted on several other Pyrus species. Two different propagations methods were tested on the various Pyrus cuttings.

Four Bactericides Tested for Crown Gall Growth

Disease
Crown gall and its effects on stone fruits are discussed along with possible control measures. The author bases the recommendations on studies conducted on Mazzard cherry seedlings using various treatments.

Rooting Compound Tested for Sweet Gum Cuttings

Propagation
Sweet Gum cuttings were tested for susceptibility to rooting using various rooting compounds in the Oregon State University affiliated study. The author provides a table listing rooting percentages for the selection of cuttings of Sweet Gum tested.

Ways to Maintain Holly Quality Discussed

Holly
Recommendations for storing holly to minimize the effects of mechanical injury, withering, defoliation and discoloration of leafs or berries. Methods discussed are partial drying, use of hormone treatments and additives, and cold storage.

How to Propagate Old Home Pear Rootstocks

Rootstocks
Due to widespread interest in Old Home as a pear rootstock, studies were conducted to test its disease resistance and to establish effective propagation methods. The Oregon State University affiliated author discusses the results of the study and provides propagation recommendations.

Control Suggested for Stripe Disease in Lily Fields

Bulbs
Stripe disease, also called "crazy disease" by growers, was researched in an effort to find a control method. The Oregon State University affiliated author also discusses future research to determine whether the disease was a virus or a fungus.

New Controls Suggested for Holly Insects

Holly
Based on interest in controlling soft brown scale (Coccus hespiridum) and other insect pests of holly, research was conducted on several insecticides. The insecticides were tested for effectiveness against more than one insect pest, the results of the research is discussed by the author.

Carton Liner Important in Holly Shipments

Holly
The importance of maintaining certain standards for shipping holly was researched in a 1957 study. The study involved several different groups in Oregon and Washington and experimented with various packing materials to to prevent the holly from drying out.

Red Leaf Spotting in Holly May be Boron Deficiency

Holly
Greenhouse studies and field surveys were conducted in Oregon in an effort to identify what was causing red leaf spotting in holly production in the Pacific Northwest. The field surveys were conducted in 1960 and 1961 at multiple holly orchards in several different Oregon counties.

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