Brand Hanson2 CommentsOctober 1, 2013Weeds

Performance of Alion and Matrix combinations in 2013 trials

Repost from UCWeedScience blog One of the major research and extension areas in my program is weed control efficacy in orchards and vineyards.  During the 2012-13 growing season, we conducted about 50 herbicide efficacy trials in commercial orchards or research station sites.  Today I thought I’d share some data from 2012-13 orchard weed control efficacy experiments comparing various tank mixtures and sequential applications of Matrix (rimsulfuron) and Alion (indaziflam).  This work was primarily funded by the Almond Board of California, Bayer CropSciences, and DuPont.

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Brand Hanson0 commentsOctober 4, 2012Weeds

Evaluation of pre-emergence herbicides in California almond orchards

by Andrew Johnson, Marcelo Moretti, and Brad Hanson; UC Davis Weed Science (Article originaly posted at UC Weed Science) Several field experiments were conducted to evaluate the performance of pre-emergence herbicides, herbicide rates, and tankmix combinations at different locations in the Central Valley of California and to compare the efficacy of burndown herbicides in mixture with different pre-emergence herbicides. The same treatments were used in three studies located in Fresno, Merced, and Colusa counties. Only data from the Merced county site is presented due to low weed densities at the Fresno and Colusa county sites.

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David Doll0 commentsJanuary 19, 2011Weeds

January is a good time for Pre-Emergent Herbicides

This article from last year sums up the considerations and herbicides available for pre-emergent use. Remember that pre-emergent applications must be followed by rain – usually around a quarter inch. Some other weed resources available are as follows:Almond Weed Photo Guide – With Common and Scientific Names,Susceptibility of Winter Weeds to Herbicides,and Weed Susceptibility Chart to Registered Herbicides. Also, check out the weed science blog authored by UC Weed Specialist, Brad Hanson.

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