- Author: Therese Kapaun
The Fruit Quality Laboratory at the Lindcove Research and Extension Center is in full swing for the 2012-2013 harvest season. Jamie Nemecek demonstrates use of the hydraulically powered Boswell Press, which squeezes citrus fruit at 1000 psi to produce juice for testing. The juice is used to measure total soluble solids (TSS or commonly referred to as °Brix) and to calculate % acid (titratable acid or TA). These values are needed to calculate the California Standard, a fruit maturity value that was recently passed into law for California navel oranges. The law requires the fruit juice to have a minimum value of 90 to ensure that only pleasant tasting oranges are sent to market. Different levels of pressure could cause variation in juice chemistry, such as contamination with excessive amounts of rind oil. The Boswell Press keeps the juice extraction consistent, providing excellent data for Lindcove research.
- Author: Elizabeth E Grafton-Cardwell
On October 12, Lindcove REC provided a post-conference tour for the attendees of the California Citrus Conference. Rock Christiano, Staff Research Associate for the Citrus Clonal Protection Program explained how the program provides pathogen-free budwood to the citrus industry. The participants toured the screenhouses that generate the budwood and the new greenhouse that will provide a protected environment for important citrus germplasm. Dr. Tracy Kahn (UC Riverside) gave a walking tour of her demonstration orchard at LREC and provided information on early mandarin varieties. Therese Kapaun (SRA), Don Cleek (Principal Ag Technician) and Jose Hernandez (Senior Ag Technician) gave a demonstration of the new fruit grading system and high level of detail that it can provide the researchers.
- Author: Therese Kapaun
This week Lindcove REC is busy in the greenhouse potting Carrizo rootstock seedlings, which were planted as seeds into cone flats in early summer. Healthy roots indicate promising growth, as these plants are destined for budding next June with new varieties for the breeding program.
- Author: Therese Kapaun
Happiness is an empty greenhouse.
With more than 1000 potted trees planted in research blocks at Lindcove REC this summer, we have room to move around and make some renovations to the greenhouses. Physical Plant Mechanic Dan Seymore installs new benches, which will soon be filled with potted rootstock seedlings.
- Author: Therese Kapaun
On Thursday Sep 13, Lindcove REC hosted a field day for growers and pest control advisors on the subject of citricola scale biology, monitoring and control. The program included a talk given by Beth Grafton-Cardwell, field identification of live vs. dead scale, field sampling and specimens under microscopes inside the mobile laboratory. Proper use of a hand lens was demonstrated by assistants in the field. A monitoring protocol was described to help PCAs determine if scale counts exceed the treatment threshold for this common San Joaquin Valley pest. Insecticide resistance to organophosphate insecticides was discussed and the activity of new pesticides described.
