- Author: Shannon C. Mueller
This information was provided by Tunyalee Martin, UC Statewide IPM Program
It's that time of year when volatile organic compound (VOC) emissions released from nonfumigant pesticide applications can impair air quality. Regulations are in effect that growers and pest control advisers should know about, especially for the San Joaquin Valley starting today - May 1.
Here are highlights from Pam Wofford, Department of Pesticide Regulation (DPR), regarding the San Joaquin Valley. Pest control advisers cannot recommend and growers cannot use:
high-VOC products containing abamectin, chlorpyrifos, gibberellins, or...
The old adage: "what goes up must go down" seems to hold true once again.
From 2007 through 2013, hay exports from the United States increased by nearly 60%.
But 2014 was a different story. Hay exports in 2014, although high relative to historical volumes, declined 12% from 2013 levels (Figure 1 and 2).
The top 5 import countries for US hay account for 98% of total US export volume. Japan is the major importer of US hay, followed by China, Korea, UAE and Taiwan (Figure 2). China leads imports in terms of US alfalfa hay (Table 1).
Figure 1. Hay being re-compressed for export from Western-Grown alfalfa and grasses.
Greater than 99% of US hay exports are...
UC Davis Annual Field Day for Alfalfa & Small Grains will be held 12 May, 2015 on the UC Davis Campus. Many subjects including pest management, irrigation management, genetics, disease resistance and drought response will be featured. Come visit field research plots showing new varieties, subsurface drip irrigation, monitoring of irrigation and water needs, and pest management.
The grains program is in the morning and the Alfalfa/Forage Program in the Afternoon.
FREE Barbecue Lunch at Noon Sponsored by California Crop Improvement Association.
There is no pre-registration required,...
- Author: Rachael Freeman Long
As if the drought were not enough to reduce forage yields this year, some Sacramento Valley oat hay growers have been hit with a bad case of Barley Yellow Dwarf Virus (BYD) disease this spring, causing poor appearance and low yields.
Symptoms of BYD include reddening of the leaves, stunting of plants, and irregular and small or blank seed heads. The virus is only transmitted by aphids, which acquire the virus from wild grasses. The presence of the virus does not affect the feeding quality of the forage.
Controlling the aphids to prevent infection is possible, but not generally effective or cost efficient. Early planting favors aphid movement into fields, so later plantings (around 15 November in the Yolo County area) to...
Water and Pest Management will be the focus of a field day be held April 16th at the UC Desert Research and Extension Center in Holtville, CA in the Imperial Valley. 7 a.m. through Noon. Includes Lunch (sponsored by mOasis). Come learn about water issues with alfalfa, pest management, and a range of crops from sugarbeet to king grass.
APPROVED CEU's: Certified Crop Adviser (CA 53247 – 4hrs.), CA CEU (M-0663-15 – 1hr.) &
AZ CEU (EXC-318-15A – 1hr.)
Here are the topics to be covered:
Alfalfa and Water...