Tractor-mounted, GPS-based spot fumigation system manages Prunus replant disease

“Managing Nematode Parasitism and Prunus Replant Disease with Spot Fumigation and Rootstocks” Grant Agreement 14-PML-R003 Project Leader and Report Preparer:

Alternatives to Fumigation for Control of Apple Replant Disease in Washington State Orchards

Introduction The poor growth of fruit trees that occurs after replanting on a site that previously supported the same or closely related species is termed “replant disease.” In apple, replant disease is widespread and has been documented in all of the major fruitgrowing regions of the world (Traquair, 1984). Apple replant disease is characterized by uneven growth of young trees but, when severe...

design and fabrication of a map-based vra system for a tractor- mounted boom-type field sprayer

variable rate application (vra) based on site specific crop management (sscm) is an effective approach for optimizing the application of agricultural inputs and preventing the undesirable environmental impacts. design, construction and evaluation of a map-based vra system was the main objective followed in this research. for variable rate application based on the generated map, a direct injecti...

GPS Waypoint Navigation via Head Mounted Vibrotactor

The purpose of this project was to create a mode of pedestrian navigation via a single head mounted vibrotactor. Our intention was to achieve accurate waypoint navigation with fewer tactors than in previous works, thereby introducing a simpler system and increasing cost effectiveness. Test results concluded that average walking speeds through our course were similar when given verbal direction ...

Controlled formaldehyde fumigation system.

A comparative study of formaldehyde (HCHO) fumigation was carried out by controlled vaporization, using an electric vapor generator, and by the Formalin-permanganate method. Determination of vapor levels as well as bactericidal action showed the generator to be more effective. Maximum achievable fumigant levels were temperature dependent and related to the equilibrium vapor concentration of HC...