What kind of fruit is this that I picked from the forest? Is it edible?

Why does my sloe tree, when it has beautiful flowers and is about to bear fruit, drop off? Is there anything I can do to prevent this?

Please advise on rodent control.

Why is it like that?

What is it?

My mango tree is drying up and turning black. Please advise.

I've heard people say that the soil is salty, the soil is sour, and the soil is spicy. What does that mean?

You can see the symptoms of pests, what should I do?

I saw this in my field. What insect's egg is it?

Raising Azolla with cow dung fertilizer like others, but it's not good. In Laos, they do the same thing. How come it's so good?