I need agronomist consultation for Farm business. Frequent consultation

I have a 50,000m2 farm in Kuwait,

Which is. A hot arid climate.
The soil type is alkaline (pH 8) and texture is sandy loam.

I need an agronomist to assist in:
-Soil amendment plan
- Fertilization plan to reach maximum yield of crops (potato)
- current yield is similar farms is 25ton/ha where other countries reach up to 80ton/ha.
-follow up with any consultation requirements related to the farm business.