islandguy

Some veggies, like lettuce can’t handle the hot season. Others struggle with the rainy season. So find out the best time to plant, as others have said.

“The best policy is to ask at least three different people--not within earshot of each other, of course--and see if at least two of them agree. Unless you have some consensus, you're likely destined for the goose chase.” agree with this previous comment. Done this for many years in many countries if I don’t get two out of three, I start over.

4,000 trees? Wow! At that volume maybe you could seek out a partner with processing capability. You need market differentiation as the local market is flooded, mostly with one kind of mango.. Organic or place of origin are possible differentiation. Organic gives you a possible way to command a higher price, especially for export. Switching to organic would likely depress yields until you can revive the soil and learn what organic compatible products will help take care of your orchard. Those sprays may seem pricey but you only need a little product per tank and the commercial products keep getting more expensive. You might ask Dr. Treelove, as he took care of and/or owned a commercial organic mango grove in Thailand. Best of luck.