Orange plant disease and why are havey rainfall season orange leaves yellows?
I have 800 (hundred) orange mature tree before 2/3 year from havey rainfall season my orange tree leaves have yellows disease and not growing why are the leaves are crul and having yellows disease?
This sounds like a fungal issue. Sometimes, it can resolve itself, but to be sure, you will want to apply dolomitic lime, and wettable sulfur to kill off any disease in the soil. Here are some citrus tree articles for further reading: https://www.gardeningknowhow.com/edible/fruits/citrus/