Unavailability of arable land is a big problem. One tried and tested way to restore exhausted farmland is to leave it fallow. You can also try hydroponics and vertical farming.
Soil fertility can be retained by incorporating cover crops that add organics to the soil, using green manure or growing legumes to fix nitrogen from the air.
Now is the time to start thinking seasonally, explore new technologies, incorporate machines into the farm and improve your bargaining skills.
With better policy, reducing dependency on nonrenewable resources, minimizing the use of expensive inputs is a promising way to deal with limited resources.
Insufficient storage makes it hard to meet the demand during the off-season. Setting up supply chains for perishable food items is one of the fine ways to increase food supply.
Today's concern is the depleting groundwater levels and increased reliance on rainwater for farming. Drip irrigation, building reservoirs, and desalination are possible solutions.