Monitoring From a Distance

Irrigation

Researchers at Oregon State University evaluated the potential of a remote soil-moisture-sensing technology in ornamental container production systems. The authors discuss the system they used, implications of the study, and their conclusions.

The Economy of Water

Irrigation

The Oregon State University affiliated authors strive to answer the question of whether plant physiology and breeding research can work collectively to develop more water-efficient and drought tolerant plants that will benefit the green industry.

Phenolic Composistion of Basil Plants is Differentially Altered by Plant Nutrient Status and Inoculation with Mycorrhizal Fungi

Management
Four cultivars of basil were inoculated or not with the arbuscular mycorrhizal fungus (AMF), Rhizophagus (formerly Glomus) intraradices (Schenck & Smith) Walker & Schubler and grown with a fertilizer to access whether 1) P availability and inoculation with AMF influences the phenolic composition of basil; and 2) treatment effects on phenolic composition are related to plant nutrient status.

Irrigation Frequency Alters Nutrient Uptake in Container-grown Rhododendron Plants Grown with Different Rates of Nitrogen

Irrigation
A report on the influence of irrigation frequency and rate of nitrogen (N) application on uptake of other nutrients in one deciduous and two evergreen cultivars of Rhododendron grown in containers for 1 year. Researchers also evaluated whether nutrient concentrations in different structures and ratios of N to other nutrients in leaves and whole plants could be used to detect the influence of irrigation frequency on the relationship between N and other nutrients.

Chicoric Acid Levels in Commercial Basil (Ocimum basilicum) and Echinacea purpurea Products

Greenhouse
In this study researchers evaluated the chicoric acid concentrations in dried and fresh basil (Ocimum basilicum) products available to consumers and how these concentrations compare to those from E. purpurea plant and products.

Simple Linear Regression and Reflectance Sensitivity Analysis Used to Determined the Optimun Wavelengths for the Nondestructive Assessment of Chlorophyll in Fresh Leaves Using Spectral Reflectance

Management
This study was conducted to 1) evaluate whether simple linear regression in combination with reflectance sensitivity analysis can be used to determine optimal wavelength (OW) for Chl assessment using reflectance; and 2) evaluate the importance of using OW in the development of Chl-related reflectance indices.

Rate of Nitrogen Application During the Growing Season and Spraying Plants with Urea in the Autumn Alters Uptake with Urea in the Autumn Alters Uptake of Other Nutrients by Deciduous and Evergreen Container-grown Rhododendron Cultivars

Fertilizer
Deciduous and evergreen cultivars of container-grown Rhododendron were used to determine whether spraying plants with urea in the fall altered 1) uptake of nutrients other than N in the year of application and the following growing season; and 2) allocation of nutrients other than N in the year of application and the following growing season.

Ebb and Flow From an Engineer's Viewpoint

Irrigation
Agricultural engineering specialist affiliated with the University of Connecticut discusses the benefits of using an ebb and flow irrigation system in a greenhouse environment. Examples of crops successfully grown using the ebb and flow system are provided.

Capillary Beds

Nursery Crops
A discussion about capillary beds and also a how to guide on the construction of the beds for nursery production. Topics addressed include the construction of capillary beds, costs (labor, equipment, materials), root growth and development, leaf scorch, and pathogens.

Intermittent Mist System Controls Devices for Propagation Plants

Irrigation
An examination of different intermittent mist system control devices used for plant propagation. The author discusses a variety of control devices including but not limited to program repeating timer, light operated timer control, and multizone mechanical controller.

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