what is the essential to do in a tropical country to grow vegetables
i try many time seeedling tomato, chinese cabbage,parsley,escarole etc....they don't growth and juste disapear, how to prevent that
Certified GKH Gardening Expert
It could be birds, rodents, insect pests, or plant disease. I suspect it may be a soil-borne disease, called "damping off". I'm in Thailand and it is very common.
You should start your seeds in a sterilized planting medium and then plant them out in the garden when they have grown a little and will have more resistance. Or use a soil that you have pre-treated with a biological fungicide like Trichoderma harzianum.
Check with this Univ of Philippines department for recommendations of a local product. https://biotech.uplb.edu.ph/products/biofertilizers
And I just found this source: http://bswm.da.gov.ph/Products/LaboratoryProducts
Here's an article that has other tips: