Hello Arif,
If you mean to feed the worms, I have that covered. My mix has plant matter including spent coffee grounds. I have used this same mix in the States to cultivate worms for my garden plants such as tomatoes. The worms loved it, & grew quite large. As for the plants, I am continually combining organic matter with the soil as it comes to me. We eat lots of vegetables, plants shed leaves, & the sawdust of course. All of this is allowed to dry out, & gets shred up to be mixed into the worm mix which gets incorporated into my plants pots slowly. I have only been here 4 months, so I am still developing a good strategy to work with this. Once I have this completely figured out, I plan to incorporate the method on a large scale for my fishery & horticulture farm. The fertilizer tea idea you mentioned was actually already in my plans. I am going to be using a large tank (1000 liters) to compost on my farm, & circulate the ponds water through this compost in order to draw nutrients out. My main concern is getting micro-nutrients into the mix since this part of the world seems to be a bit short of them. More to come later.
Noel