{"id":1153,"date":"2023-06-12T09:21:56","date_gmt":"2023-06-12T13:21:56","guid":{"rendered":"https:\/\/site.extension.uga.edu\/benhillcoag\/?p=1153"},"modified":"2023-06-12T09:21:58","modified_gmt":"2023-06-12T13:21:58","slug":"spraying-tips-in-peanuts-dr-virk-and-dr-prostko","status":"publish","type":"post","link":"https:\/\/site.extension.uga.edu\/benhillcoag\/2023\/06\/spraying-tips-in-peanuts-dr-virk-and-dr-prostko\/","title":{"rendered":"Spraying Tips in Peanuts &#8211; Dr. Virk and Dr. Prostko"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Spraying Tips<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Simer Virk, UGA and Eric Prostko, UGA<br>Timely and effective pesticide applications in peanut production are important to stay on top of weed,<br>insect and disease control throughout the growing season. Achieving both desired spray coverage and<br>efficacy while keeping off-target movement of pesticides to a minimum is a challenging but an<br>important task. Several factors during spray applications can influence the coverage and efficacy<br>required for proper pest and disease management in peanut. Below are several spray considerations to<br>maximize the effectiveness of pesticide applications with boom sprayers:<br><strong>Timeliness:<\/strong> Being timely with pesticide applications is the most important factor in determining the<br>success of any pest management program. Late applications usually will require higher use rates or split<br>applications and are more often than not, less effective.<br><strong>Nozzle Selection: <\/strong>Check pesticide labels carefully for recommended spray volume, droplet size, and any<br>other conditions needed to maximize pesticide efficacy. Based on the application type and pesticide<br>mode of action, select the nozzle that provides both the desired output (in gallons per acre or GPA) and<br>the droplet size. Nozzle selection will also depend on the ground speed and pressure required to achieve<br>the desired GPA.<br><strong>Spray Pressure: <\/strong>Spray pattern and droplet size changes with spray pressure. Lower pressures result in<br>larger droplets whereas higher pressures produce smaller droplets for a given nozzle size. Based on the<br>application type, consider selecting a nozzle that provides the required droplet size in the 30 \u2013 50 PSI<br>pressure range. Both medium and coarser droplets are effective for herbicide applications whereas<br>fungicide applications generally require medium to finer droplets for increased coverage and efficacy.<br><strong>Ground Speed: <\/strong>Application speed plays an important role in achieving the desired application rate. A<br>higher travel speed will require a higher nozzle flow rate to achieve the given application rate and viceversa. Spray at ground speeds of or less than 10 mph to obtain consistent and more uniform coverage<br>across the field. Faster speeds also cause excessive boom bounce and spray inversion sending finer<br>droplets higher in the air and increasing drift potential.<br><strong>Boom Height:<\/strong> Boom height influences overlap and uniformity of spray application at a selected nozzle<br>spacing and spray angle. Lower boom height (20 to 24 inches from the target) is recommended for<br>maintaining a proper spray overlap and application uniformity across the boom. Make sure to use<br>nozzles that have a 1100 angle to allow spraying at lower boom heights without effecting spray coverage.<br>Environment: Weather conditions such as wind speed and temperature also play a role in achieving the<br>desired spray coverage and on-target application. Avoid spraying when wind speeds are more than 10<br>mph to reduce off-target movement of pesticides. Wind direction should be also considered to avoid<br>spraying towards sensitive crops, homes, etc. Avoid spraying when the conditions for temperature<br>inversions are favorable \u2013 from later in the day until early in the morning.<br><strong>Sprayer Calibration: <\/strong>Proper sprayer calibration is important to verify the desired spray volume (GPA)<br>based on the selected ground speed and nozzle spacing. During calibration, make sure to check the<br>spray volume at multiple locations across the boom and perform a thorough sprayer inspection to<br>ensure proper functioning of all sprayer components.<br><strong>Spray Technology:<\/strong> Consider using spray technologies such as a rate controller and section or individual<br>nozzle control which helps in maintaining application accuracy across the whole field by minimizing offtarget applications. Advanced technologies such as pulse width modulation (PWM) technology and<br>automatic boom height control systems are also currently available to utilize on boom sprayers for<br>improving precision and accuracy of pesticide applications.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Spraying Tips<\/p>\n","protected":false},"author":234,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[15,18],"tags":[],"class_list":["post-1153","post","type-post","status-publish","format-standard","hentry","category-peanuts","category-pesticide"],"_links":{"self":[{"href":"https:\/\/site.extension.uga.edu\/benhillcoag\/wp-json\/wp\/v2\/posts\/1153","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/site.extension.uga.edu\/benhillcoag\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/site.extension.uga.edu\/benhillcoag\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/site.extension.uga.edu\/benhillcoag\/wp-json\/wp\/v2\/users\/234"}],"replies":[{"embeddable":true,"href":"https:\/\/site.extension.uga.edu\/benhillcoag\/wp-json\/wp\/v2\/comments?post=1153"}],"version-history":[{"count":1,"href":"https:\/\/site.extension.uga.edu\/benhillcoag\/wp-json\/wp\/v2\/posts\/1153\/revisions"}],"predecessor-version":[{"id":1154,"href":"https:\/\/site.extension.uga.edu\/benhillcoag\/wp-json\/wp\/v2\/posts\/1153\/revisions\/1154"}],"wp:attachment":[{"href":"https:\/\/site.extension.uga.edu\/benhillcoag\/wp-json\/wp\/v2\/media?parent=1153"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/site.extension.uga.edu\/benhillcoag\/wp-json\/wp\/v2\/categories?post=1153"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/site.extension.uga.edu\/benhillcoag\/wp-json\/wp\/v2\/tags?post=1153"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}