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  • Author or Editor: William E. Barrick x
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Abstract

The effect of temperature and humidity conditions on the expression of deicing salt spray injury was investigated using terminal buds and stem sections of Norway maple (Acer platanoides L. cv. Emerald Queen). Loss of viability was associated with sodium chloride treatments and appeared in both high (8.3°C) and low (0°) temperatures. Tissue moisture (%) was significantly lower in low moisture (phosphorous pentoxide) atmospheres and in sodium chloride treatments. Penetration of both Na+ and Cl- ions as evidenced by electron micro-probe analysis occurred throughout stem tissues. Deicing salt spray injury in Norway maple appears to be related to penetration of phytotoxic ions and not directly associated with moisture loss through osmotic stress.

Open Access

Abstract

An increase in shoot length and shoot dry weight and a decrease in number of shoots per lateral branch, with no effect on number of leaves per shoot, was observed on sheared azaleas grown under increased daylengths in environmental chambers or greenhouses. Plants grown at low (24-19°C) temperatures in environmental chambers had greater shoot lengths, higher numbers of shoots, more leaves per shoot, and decreased shoot dry weight. Decreases in shoot length, number of shoots, number of leaves per shoot, and shoot dry weight occurred as node position for shearing increased (counting from the shearing point). Thus, an inverse relationship apparently exists between node position for shearing and shoot growth in greenhouse azaleas.

Open Access

We compared service quality perceptions and expectations for consumers from five traditional garden centers (TGC) and three nontraditional garden center outlets (NTO) in Charlotte, N.C., in 1995. NTO and TGC customers had very similar expectations of service quality from their respective retailers. However, TGC customers perceived that their retailer better met their overall expectations. Service quality gaps, the difference between customer perceptions and expectations, were identified for both types of outlets for four of five service quality dimensions. Both TGC and NTO customers ranked assurance and responsiveness as the most important service quality dimensions. Empathy was more important than reliability to TGC customers. This order was reversed for NTO customers. Both sets of customers ranked tangibles as the least important service quality dimension.

Free access