- (Public Value) UCANR: Safeguarding abundant and healthy food for all Californians
From the UC Rice Blog (March 23, 2020)
Weeds are important pests of California rice systems, and weed management can account for roughly 17 percent of total operating costs, according to a UC cost of production study./span>
- Author: Steven Fennimore
At the recent CWSS meeting in Monterey there were a number of presentations on the impact of precision and robotic technology in weed management. The weed school consisted of presentations that detailed technology for large scale monitoring of agricultural fields as well as small autonomous weeding robots that differentiate crops from weeds and selectively kill the weeds in the same pass. Both scales of technology have their place. Large-scale cropping systems such as wheat in the great plains are grown on very large farms where efficiency and ability to monitor large areas at low-cost is essential. California vegetable farms tend to be much smaller and more intensive with workers in every field most every day for harvesting,...
- Author: Brad Hanson
A quick link to a Vineyard Team podcast and workshop series on weed control in California winegrape production systems
A couple weed control presentations of interest by weed science academics include:
- John Roncoroni "A new focus on weed management"
- Scott Steinmaus "Science and controversy of glyphosate"
This article was originally prepared for the CWSS Research Update and News (December 2019 edition). You can see it and several other articles at the CWSS website. You can also get information on the annual California Weed Science Society Conference which will be held in Monterey during January 22-24, 2020.
Performance of Pendimethalin...
Last summer, I transplanted a tomato variety trial into a field not far from Dos Palos, an area where annual crops such as cotton, corn, tomatoes, and melons have historically dominated the agricultural landscape. The soils in this area typically are clay loams with elevated pH (> 7) as well as salinity (EC > 2). In particular, the soil at this specific location was classified as an Alros clay loam with a pH of 8 and an EC of 3.2. And this was the good part of the field!
The trial was long enough that it extended across the entire length of the field. At the south end, it terminated in an obvious alkali spot: the soil was much lighter, and the structure was that of powdered chalk. I briefly considered moving the remaining...