Topics in Subtropics

California is suffering historic drought conditions. The information on this webpage offers farmers and ranchers links to valuable resources, carried out by researchers and specialists, on a vast array of issues they are facing during this extremely dry and difficult year.

Scientists at the Florida Department of Agriculture and Consumer Services have developed a SmartTrap using 3D printing technology to more efficiently catch and study the Asian citrus psyllid, the vector of citrus greening.

Some call it tip burn which is often what you see on an avocado as it goes into flowering. The areas where avocado are grown typically have a lot of salts in the water, but also specific salts like sodium and chloride.

| All citrus pests | All crops | About guidelines | I have had a number of requests to identify fruit spotting on lemons. It turns out to be Septoria fungus which can show up on leaves, stems and fruit.

A local Santa Barbara backyard grower has been experimenting with many different apple varieties and has found some unusual success at growing a wide variety of them that according to their published chilling hours requirements should not do well in Southern California.