Topics in Subtropics

newsletter
Topics in Subtropics Blog
You can subscribe to this  blog with multiple entries per week reflecting what's happening with subtropical crops and upcoming educational events.  Just click on the "Subscribe" button just to the right of this paragraph.  There's also our seasonal quarterly Topics in Subtropics newsletter found at our Ventura, Santa Barbara, San Luis Obispo, Riverside, San Diego, Tulare and Kern Counties Cooperative Extension websites.
Primary Image
Olinda versus Rosy Red Valencia

A New Valencia Variety

October 2, 2025
Research might seem like it happens primarily in labs or hospitals, under microscopes or with the latest in high-tech equipment. But in California, where farming has grown into a $60B industry, science is happening down on the farm — and research has literally become an essential part of putting food on the…
View Article
Primary Image
Irrigating citrus

Irrigation Information Online from UC Davis

September 25, 2025
By Ben A Faber
Irrigation Educational MaterialOur objective is to support Californians’ efforts to improve economic competitiveness and protect environmental quality in matters relating to land, air and water resources in agricultural, rural, urban and natural landscape settings.Our program is dedicated to the study of…
View Article

Citrus Pests and Natural Enemies

September 25, 2025
By Sandipa Gautam
Dear PCAs and Citrus Growers,We are pleased to invite you to two upcoming educational events at the Lindcove Research and Extension Center (LREC) this October:California Red Scale and Natural Enemies WorkshopDate: Wednesday, October 1, 2025Time: 8:30 AM to 4:00 PMRegister by September 25 using…
View Article

Coming to a Euc Near You?

September 11, 2025
By Ben A Faber
Approximately 90 of the more than 700 species in the tree genus Eucalyptus have been introduced into North America over the last 150 years. Eucalyptus spp. are native to Australia and New Guinea. Many residents of California find the growth form, evergreen foliage, floral show, and other…
View Article
Primary Image
Parasitic wasp found in avocado orchards

Greenhouse Thrips in Avocado

September 10, 2025
By Ben A Faber
Greenhouse Thrips in avocado has not been a major issue for many years, not since the days of malathion sprays that invariably brought on more pests than it seemed to treat.  Recently, we've seen an increase in greenhouse thrips damage, this along with stink bug, false chinch bug and seed weevil and…
View Article