Red Rio Grapefruit
i have a red rio grapefruit that i planted a year ago. It was doing very well and a couple months ago it started dropping its leaves and turning yellow. I have fertilized it, i water it every 2 to 3 days, i have put mulch it, i have added gypsum and copperas (mineral for yellowing leaves). A local farmer said it was the water, too salty. It has rained pretty good in the past month or so and still no results. I also put buckets of water out for days to clear up any chlorine. I also create my own compost tea. Next to this tree i have a Persian lime and orange tree and they are doing perfect. Any ideas?
ps the photo is about 2 months ago. its worse now. Only the top leaves remains.