To order the equipment, check the Trimble Navigation web page for a distributor near you. A ruggedized computer will also be necessary, and will cost about $1600 (Trimble Recon 400 Part Number: 49670-20). Poorly designed equipment will only waste your timeĪnd discourage you from pursuing precision management to its fullest extent.Ī Trimble sub-meter GPS unit and backpack will run about $5000 (Trimble Pathfinder Pro XRS Field Kit Part Number: 50355-50). One site to find some background information is the Trimble If these descriptions sound like Greek to you, read-up before purchasing a That has both WAAS and Beacon differential GPS capabilities and sub-meter resolution. There are many options in this area but we encourage you to look for a receiver Global Positioning System Receiver (GPS): ThereĪre many more to choose from by simply searching the web. Ourselves and feel that they do a good job measuring or recording events. The list of products below are those that we have had a chance to work with Pen can be the most reliable method of maintaining a record or observations. No matter how computer oriented you are, a simple notebook and an indelible Notebook that you are comfortable recording information in on a daily basis. The first and probably most important tool is a composition notebook or other There are many vendors who supply various tools to aid in precision management. Sponsor: Roy Hardison, Best Sulfur Products Stowell, Ph.D., CPPP, CPAgĬooperator: Ron Nolf, Vista Valley Country Club No phytotoxicity was observed, even when the rate of Captor was doubled to simulate spray overlap. Reduced rates of Captor (88 oz/1000 square feet for the initial application, followed by 30 oz/1000 square feet for subsequent applications) had no significant effect on turf quality when compared to the non-treated check. However, using a less stringent P of <0.10, a significant improvement in turf quality was observed on the last sampling date only, for a treatment of Captor at 88 oz/1000 square feet (30 gallons per acre). Key results include:įollowing three applications of Captor, no significant differences in turf quality were observed when data was analyzed at the P<0.05 level. Summary: In a replicated field trial conducted on a Bermudagrass fairway with a history of high sodium levels, the product Captor was evaluated for its ability to improve turf quality by reducing sodium levels in the soil. The performance of this product in soils with significant calcium carbonate levels remains to be seen.Evaluation of Captor for Management of Sodic Soils Therefore, in soils that are low in calcium carbonate, Eximo does not appear to have any positive impact on soil chemistry. According to Aquatrols representatives, the product's efficacy relies on the presence of calcium carbonate in the soil. ![]() The test, however, was conducted on soils that were low (less than 5%) in calcium carbonate. The results show that Aquatrol's Eximo (a synthetic acid), in combination with Dispatch (a surfactant) had no impact on levels of calcium, sodium, or bicarbonate (measured using Mehlich 3 or saturated paste methods) in the soil. In this study, the virtual audit was successfully used to describe the occurrence of GLS and BRP on golf course turf.Įvaluation of Eximo plus Dispatch for reduction of sodium in USGA specification greens The virtual irrigation audit, a simple computer model that predicts the size and location of both wet and dry areas on golf course turf, was designed to provide diagnosticians and turf managers with a precision turfgrass management tool for disease and soil moisture management. Summary: Recent research suggests that soil moisture impacts the severity of turf diseases such as anthracnose caused by Colletotrichum cereale, Pythium root dysfunction caused by Pythium volutum, gray leaf spot (GLS) caused by Magnaporthe grisea and brown ring patch (BRP) caused by Waitea circinata var. Poster presentation at the 2008 American Phytopathological Society meetings, July 26 - 30, Minneapolis, MN.Īuthors: Larry Stowell and Wendy Gelernter (PACE Turfgrass Research Institute) and Frank Wong and Chi-Men Chen, University of California Riverside | Diseases, Precision Turf Management, Soil, Water, Using virtual irrigation to forecast disease
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