Click on “Download PDF” for the PDF version or on the title for the HTML version.


If you are not an ASABE member or if your employer has not arranged for access to the full-text, Click here for options.

Nozzle and Carrier Application Effects on Control of Soybean Leaf Spot Diseases

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org

Citation:  2007 ASAE Annual Meeting  071150.(doi:10.13031/2013.22919)
Authors:   H Mark Hanna, Alison E Robertson, W Mark Carlton, Robert E Wolf
Keywords:   air-assist, application, disease, fungicide, nozzle tip, soybean, canopy penetration

A two-site, two-year field application experiment investigated fungicide coverage in a fully-developed soybean canopy. Application treatments included “high-rate” (187 l/ha; 20 gal/acre) and “low-rate” (112 l/ha;12 gal/acre) with fine-droplet two-orifice tips, medium-droplet two-orifice tip at 187 l/ha (20 gal/acre), a coarse-droplet single-orifice “herbicide-style” tip at 168 l/ha (18 gal/ac), and an air-assisted spray treatment. Droplet coverage and size, and foliar disease severity in the lower, middle, and top parts of the plant canopy, and crop yield were measured.

(Download PDF)    (Export to EndNotes)