Happy New Year! We are entering "meeting season". The new year brings several opportunities for continuing education.
1. UC Cooperative Extension will host the SJC and Delta Field Crops Meeting on Friday, January 10, 2020 from 8:00am to 12:00pm. The meeting location is the Cabral Agricultural Center in Stockton (2101 E. Earhart Ave., Stockton, CA 95206). Please see this previous post for the agenda, or open the attachment below. We will offer continuing education credits for DPR licensing (2), CCA certification (3.5), and nitrogen management (1.5). Light refreshments will be provided.
2. UC Cooperative Extension will host five meetings for rice growers. The meeting details are as follows:
Richvale: Monday, Jan. 13, 8:30am, Evangelical Church, 5219 Church St., Richvale
Willows: Monday, Jan. 13, 1:30pm, Glenn Co. Office of Education, 311 South Villa Ave., Willows
Colusa: Tuesday, Jan. 14, 8:30am, Colusa Casino Resort, 3770 Hwy. 45, Colusa
Yuba City: Tuesday, Jan. 14, 1:30pm, Veterans Hall, 1425 Veterans Memorial Circle, Yuba City
Woodland: Wednesday, Jan. 15, 1:30pm, Norton Hall, 70 Cottonwood St., Woodland
Doors open at 8:00am, and meetings start at 8:30am at Richvale, Colusa, and Woodland. Doors open at 1:00pm, and meetings start at 1:30pm at Willows and Yuba City. DPR and CCA continuing education credits will be offered. For the program, please visit the UC Rice Blog.
3. San Joaquin County Farm Bureau and the Ag Commissioner's Office will host Spray Safe on January 27, 2020. The event takes place at the Cabral Agricultural Center in Stockton. Registration begins at 7:30am, with lunch concluding at 12:50pm. Please see the registration flyer and agenda here.
4. The California Chapter of the American Society of Agronomy will hold its annual Plant and Soil Conference on February 4-5 in Fresno, California. Program information and registration are available from the conference website. Session topics include nitrogen management, drip irrigation, and cover cropping, among others. DPR licensing, CCA certification, and nitrogen management continuing education credits will be offered.
UCCE farm advisors will be hosting local meetings for other crops, like tomatoes, almonds, and cherries. Please see our calendar for details.
UC Cooperative Extension will host the SJC and Delta Field Crops Meeting on Friday, January 10, 2020 from 8:00am to 12:00pm. The meeting location is the Cabral Agricultural Center in Stockton (2101 E. Earhart Ave., Stockton, CA 95206). Coffee and refreshments will be provided.
A printable version of the agenda is attached at the bottom of this post. The agenda is as follows:
8:15am Delta Rice Update: Armyworms, Herbicide Trial, Weedy Rice, Michelle Leinfelder-Miles, UCCE San Joaquin/Delta Counties
8:45am Regulatory Update, Tim Pelican, San Joaquin County Agricultural Commissioner
9:00am Alfalfa Weevil Insecticide Resistance, Madison Hendrick, UC Davis
9:15am Benefits of Alfalfa in Crop Rotations, Nicole Tautges, UC Davis
9:45am IPM in Organic Field and Vegetable Crop Production, Rachael Long, UCCE Yolo/Sacramento/Solano Counties
10:30am Observations and Pest Issues with CBD Hemp Experiments in California, Dan Putnam, UC Davis
11:00am Fertilizing Corn and Wheat with Manure: Research Results, Nick Clark, UCCE Fresno/Tulare/Kings Counties
11:30am Warm-Season Legume Cover Cropping in the Delta, Michelle Leinfelder-Miles, UCCE, San Joaquin/Delta Counties
12:00pm Evaluations and Adjourn
We have submitted applications for continuing education for pesticide licensing and certified crop advisors. We have also submitted an application for nitrogen management continuing education, which would help to satisfy growers' continuing education requirement for the Irrigated Lands Program. Applications are pending.
Our programs are open to all potential participants. If you require special accommodations, please contact UCCE San Joaquin County at 209-953-6100. I wish you a happy holiday season, and I hope to see you at the meeting in the new year.
Stand counts were made approximately two weeks after planting. The stand was assessed in the center two rows of each four-row plot, counting the plants along a 10-foot length. Bloom was assessed over the week of July 15th. We monitored disease incidence and plant lodging in late September. Disease incidence, particularly Fusarium ear rot, was lower in 2019 compared to 2018. A sign of Fusarium ear rot is white fungal mycelium around the kernels. The disease is usually introduced to the ears by corn earworm or by thrips that travel down the corn silks at pollination. Incidence may be reduced in varieties with longer or tighter husks that prevent insect infestations. Planting earlier in the season may also reduce incidence, as the crop may reach pollination before insect pests are prevalent. Head smut, a disease that replaces ears with dark brown spores, had low incidence this year. These two diseases are generally managed by variety selection.
The table presents mean values for the three replicates. The statistical method used to compare the means is called the Tukey's range test. Varieties were considered statistically different if their P value was less than 0.05, or 5 percent. What this means is that when differences between varieties exist, we are 95% certain that the two varieties are actually different; the results are not due to random chance. Differences between varieties are indicated by different letters following the mean. For example, a variety that has only the letter “a” after the mean yield value is different from a variety that is followed by only the letter “b”, but it is not different from a variety whose mean value is followed by both letters (“ab”). Similarly, a variety whose mean yield is followed by the letters “ab” is not different from a variety whose mean yield is followed by the letters “bc”. Eight varieties have a letter “a” following their mean yield, which means that those eight varieties all performed similarly in the trial. In other words, based on this research, we cannot attribute numerical differences to varietal differences.
In addition to yield, there were also statistical differences among varieties in days to bloom, Fusarium ear rot, head smut, ear height, grain moisture, and bushelweight. The CV, or coefficient of variation, is the standard deviation divided by the mean, or a measure of variability in relation to the mean. For the diseases, the variability among the three replicates was very high.
For a printable version of this report, please see: https://ucanr.edu/sites/deltacrops/Corn/. Special thanks go to the cooperating growers, Gary and Steve Mello, and the participating seed companies.
The Delta trial was planted on November 15, 2018 and consisted of 38 common wheat varieties and 10 triticale varieties in three replicate blocks. Following a tomato rotation, the trial was planted on 60-inch raised beds, and no nitrogen fertilizer was applied to the field ahead of planting small grains. Neither was irrigation applied during the season, as rainfall amounted to approximately 22.5 inches over the season (Staten Island CIMIS station).
Trial results can be viewed interactively from the Agronomy Research and Information Center Small Grains page. Regional summaries are based on 3 years of trial data across multiple locations. The Delta location is grouped with the Sacramento Valley. These multi-year, multi-environment summaries are what we recommend using for making variety selection decisions because any unusual circumstances in a single year (as from weather) can have a tremendous influence on variety performance.
Single-site summaries are also available and provide data across multiple years. These summaries allow more customized exploration of the data and also allow users to examine genotype by environment patterns in the data. (See heat map below.)
Both interactive sites have features that allow users to view, filter, and sort information. For the best experience, we recommend viewing these sites using a laptop or desktop computer with an up-to-date version of Firefox, Chrome, or Microsoft Edge web browser. (Microsoft Explorer will not work.) All results can also be viewed and downloaded as static tables and figures, with additional information about site characteristics and crop management here.
As we usher the 2019 harvest season, the 2019-20 small grains season is upon us. Don't forget to attend the Delta corn and small grains field meeting on October 15th. I wish everyone fruitful harvest and planting seasons!
10:00am Field corn variety evaluation – preliminary results: Michelle Leinfelder-Miles, UCCE
10:15am Variety traits for the Delta: Seed company representatives
10:30am In-Season Nitrogen Management in Wheat: Michelle Leinfelder-Miles and Sarah Light, UCCE
10:45am In-Season Nitrogen Management in Malting Barley: Taylor Nelson, UC Davis
11:00am Viewing of field corn plot