Summer grass weed species are becoming more troublesome in orchards in the Central Valley of California. Feather fingergrass, junglerice, sprangletop and threespike goosegrass, to name a few, are summer grass weed species that germinate (or in some cases, resume growing) when the soil temperatures start to rise in the spring, develop during the summer and complete their life cycle in the fall. With such a life cycle, summer grass weed species reach their maximum biomass accumulation late summer/early fall – coincidently when harvest operations are taking place – if previous weed management approaches were inefficient. To make matters worse, some of the mentioned weed species have some degree of glyphosate...
A new UC Cooperative Extension podcast that focuses on growing orchard crops in the San Joaquin and Sacramento valleys is now available free at http://growingthevalleypodcast.com, Apple iTunes and Google Play Music.
The hosts are Phoebe Gordon, UCCE orchard systems advisor in Madera and Merced counties, and Luke Milliron, UCCE orchard systems advisor for Butte, Tehama and Glenn counties. The pair conduct research and extension programs...
- Author: Chuck Ingels
- Posted by: Gale Perez
The following article is from the UCCE Tree & Vine News newsletter (Jan. 2017).
*Chuck Ingels is a Farm Advisor with the UC Cooperative Extension Capitol Corridor, Sacramento County office.
According to the 2014 USDA-NASS Organic Survey, Washington State was the largest U.S. producer of organic apples, harvesting 429 million pounds (over 90% of U.S. fresh production) from about 14,000 acres, with an estimated farm gate crop value of $210 million. In Oct. 2016, I spoke at an organic orchard floor workshop held in Wenatchee, WA, that covered organic weed and nitrogen management (view a PDF of the...
March 16, 2016. Editor's note.
I recently was informed of an error in the chart Lynn included in this post from December 2018. While Broadworks (ai = mesotrione) herbicide IS registered in several stonefruit crops, it is NOT currently registered for use in peach. This was entirely my error.
I struck out inclusion of peach in the text below and replaced the chart with an updated version in this post. Remember to always read a current label before applying any pesticide as labels change (or can be misread as was...
Here's an article from the San Joaquin County Field Notes newsletter (Feb. 2014.)
Dormant Weed Control in Tree Nut Crops 2014
Mick Canevari, Farm Advisor Emeritus
Brent Holtz, Pomology Farm Advisor and UCCE County Director
Brad Hanson, Extension Weed Specialist, UC Davis
Current dry weather has preempted most normal winter weed germination and growth while prolonged periods of dry soil has caused some early weeds to desiccate and die. In most tree and vine herbicide trials conducted so far this winter—the...