Trial Results: This Spray Program Protects Orchards and Vineyards from Weeds

Weeds Reduce Tree Health and Crop Quality

Weeds can hinder tree nut harvesting practices and even compete with trees for uptake of insecticides and other chemicals. Vineyards are at risk for reduced yields and vine vigor when weeds are present.

While cultural and mechanical practices can provide some help in managing weed pressures, herbicides can help growers deal with major threats. Whether or not resistant weeds are currently present, having an integrated approach to weed control can mean the difference to bottom lines.

Weed Resistance to Glyphosate

Key weeds present in orchards and vineyards have been found to be resistant to glyphosate. A best practice to slow down weed resistance to herbicides includes using multiple effective modes of action in your pre- and post-emergent herbicide sprays.

Horseweed resistant to glyphosate can reduce yield in orchards and vineyards
Horseweed

Hairy fleabane resistant to glyphosate can reduce yield in orchards and vineyards
Hairy Fleabane

Jungle rice resistant to glyphosate can reduce yield in orchards and vineyards
Jungle Rice

Russian thistle resistant to glyphosate can reduce yield in orchards and vineyards 
Russian Thistle
Italian ryegrass resistant to glyphosate can reduce yield in orchards and vineyards 
Italian Ryegrass


Crop Safety in Orchards and Vineyards

Keep crop safety in mind when selecting a weed management program. Choose pre- and post-emergent herbicides that provide excellent season-long weed control without impacting roots, fruit or plant vigor.

The Alion® and Rely® 280 spray program from Bayer pairs complementary pre- and post-emergent herbicides for tree nuts, grapescitrus and pome/stone fruits that effectively eliminate tough grass and broadleaf weeds with long-lasting residual control and excellent crop safety. Together, Alion and Rely herbicides offer versatile application approaches to ensure you start and stay weed-free. Always read and follow label instructions for best results.

University of California Extension Research Shows:


Using Alion and Rely together results in season-long weed control, graphic shows pie charts with weed control efficacy against jungle rice, hairy fleabane and ryegrass
 

Jungle Rice Control in Almonds

A university trial by Brad Hanson, a UC Statewide Weed Scientist, conducted in Chico, California, in 2014, showed that applications of Alion at 4 oz., Rely and Roundup® resulted in 100 percent control of Jungle rice in almonds.

 

University trial results show jungle rice control with bar graph

Small plot university trial conducted by Brad Hanson, US Statewide Weed Scientist, Chico, CA, 2014.
Application on December 18, 2013. All treatments included Roundup + Rely at application.



Hairy Fleabane in Grapes

A small plot university trial conducted by Kurt Hembree, a weed scientist at UC Extension Fresno County, in Five Points, California, in 2014, shows that applications of Alion at 3.5 or 5 oz., Rely and Roundup resulted in 99 percent control of fleabane in grapes.

 

University trial results show hairy fleabane control with bar graph

Small plot university trial conducted by Kurt Hembree, UC Extension Fresno Co. Weed Scientist, Five Points, CA, 2014.
Application on December 23, 2013. All treatments included Roundup + Rely at application. 2.25 inches of rain total after application.



Hairy Fleabane and Italian Ryegrass Control in Almonds

A sample plot university trial conducted in Arbuckle, California, in 2015, by Brad Hanson of the University of California, showed that applications of Alion and Rely showed good performance against hard-to-control Italian Ryegrass in almonds. Rely delivers rapid control of broadleaf weeds and grasses, including those resistant to glyphosate and multiple herbicide classes.

Hairy Fleabane vs. Italian Ryegrass Control in Almonds

Small plot university trial on 2 year trees conducted by Brad Hanson, UC Statewide Weed Scientist, UC IPM, Arbuckle, CA, 2015.



Make the Alion and Rely integrated weed management program a cornerstone of your herbicide program for exceptional season-long control of both pre- and post-emergent weeds and powerful control of tough grass and broadleaf weeds.

» Find out what an Alion and Rely 280 weed program can do for you.



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