Spinach is susceptible to weed pressure because it is produced on high-density 80-inch wide beds with 18 to 42 seedlines. There is no opportunity to cultivate the bed top so all weed control is accomplished by managing weeds in prior rotations, cultural practices, chemical weed control or hand weeding. Clipped spinach is mechanically harvested and must be kept as weed free as possible to reduce hand weeding costs. In the recent UC publication, Sample costs to produce and harvest organic spinach (Tourte et al, 2015 http://coststudies.ucdavis.edu/current/ ) hand weeding costs averaged $440 per acre. However, weeding costs can easily exceed $1,000 per acre in weedy fields, and...
- Author: Stephen Flanagan
- posted by: Brad Hanson
I've reposted (with permission) Stephen Flanagan's article from The IR-4 Project. Check out the whole issue "Volume 48 No.1 Winter 2017" for several interesting articles from a program that is incredibly important to pest management in specialty crop agriculture./span>
- Author: Gale Perez
Here's a little information on our NEW Vegetable Crops Farm Advisor Amber Vinchesi (pronounced “Vincasey”).
Introducing the New Vegetable Crops Advisor in Colusa, Sutter and Yuba Counties
Hello everyone, my name is Amber Vinchesi (pronounced “Vincasey”) and I have recently joined UCCE as the new Vegetable Crops Farm Advisor serving Colusa, Sutter and Yuba counties. Most of my work will focus on processing tomatoes and cucurbits. Please contact me if you would like me to visit your farm or to discuss the problems facing vegetable crops in this area. I look forward to meeting all of you.
I have already started a small...
The following information is from the Salinas Valley Agriculture blog.
On January 12, 2016 the Federal EPA label for Kerb SC was reinstated for leaf lettuce. The registration on leaf lettuce was pulled in 2009 and Dow AgroSciences has been working to reregister Kerb since that time. As part of this reregistration effort, Kerb was reclassified as “not likely to be carcinogenic to humans” which freed up space in the risk cup. Of particular interest are the preharvest intervals allowed in the label:
- Author: Richard Smith
Richard Smith, Farm Advisor and Tricia Love, Research Assistant
University of California Cooperative Extension Monterey County
The current automated weeding machines use cameras to detect plants, and a computer algorithm to process the image, calculate which plants to keep/remove, and activate a kill mechanism. These machines are capable of cultivating within the seedline and removing weeds that would otherwise be left by traditional cultivation. The machines used in these studies included the Robovator, F Poulsen Engineering Aps, Hvalsø, Denmark and Steketee IC Weeder, the Netherlands. Both of these machines use a split knife that as it...