In tropical countries like the Philippines and that some parts of Asia, the Pacific rim, Latin America and Africa, crop production need not be expensive.
vermi technology
Vermi Technology – For Composting And Fish Feeding
The Department of Science and Technology (DOST) is introducing vermi technology or the use of cultured earthworms on a nationwide scale for composting and fish feeding to cut back on fish cost as feeds, increase livelihood opportunities in the regions and reduce environmental pollution.