The idea is to create a system that helps farmers grow crops more efficiently, which increases their yield, by taking care of the soil. We all know that different crops need different amounts of acid or base in the soil to grow properly. To make sure the soil has the right balance, we will use a network of special sensors that can measure the pH level of the soil.

pH is a measure of how acidic or basic something is. The sensors will be placed in different parts of the field to check the pH level of the soil in those areas. The sensors will measure the data from different places and then it will be averaged. Then, based on the recieved values, the type of crop, the kind of soil, and the size of the field, the system will tell requirement of acid or base

To adjust the pH level, we will use a pump system connected to the system. The pump will automatically provide the right amount of water to the field to balance the pH level. If the soil is too acidic, the pump will add a bit of base to make it more balanced. If the soil is too basic, the pump will add a little acid.

The system will work by constantly monitoring the pH level of the soil using the sensors. It will send this information to a control unit, which will decide how much acid or base should be added. Then, the pump will deliver the water mixed with the right amount of acid or base to the field. This will happen automatically without the farmer having to do it manually.

1. Better Crop Growth: The solution helps crops grow better by keeping the soil at the right pH level. This means the plants can get the ph they need, leading to better yield.

2. Large-Scale Implementation: The system includes the usage of a network of ph sensors, which enables its usage in large-scale farms like that of 100 acres.

3. Automatic System: The solution keeps an eye on pH levels continuously, and provides the needful, whenever needed, automatically.

4. Data Analysis and Decision-Making: The sensor data is transmitted to a control unit where it is analyzed. The control unit uses predefined parameters specific to the crop type, soil type, and area to determine the ideal pH range.

5. Saving Money: By using the right amount of water and nutrients (acid-base mixed in water) at the right time, the solution helps farmers save money by avoiding excessive expenses.

1. Customization: The proposed solution considers the type of crops being grown, the type of the soil, and the size of the field. This allows customization for different fields and ensures that the correct amount of needful is provided , on the basis of field.

2. Large-Scale Implementation: The system includes the usage of a network of ph sensors, which enables its usage in large-scale farms like that of 100 acres.

3. Automatic System: The solution keeps an eye on pH levels continuously, and provides the needful, whenever needed, automatically.

1. Sensor Reliability: It is important to ensure that the pH sensors used in the solution are accurate and reliable. This is necessary to avoid incorrect pH readings, which could lead to improper adjustments in the pH levels of the soil.

2. Correct data feeding: It is important for the costomers to provide accurate amount of information, so to prevent inaccuracy.

3. Technical Challenges: There might be technical difficulties related to sensor calibration, data transmission, and automation control. These challenges need to be addressed to ensure the smooth functioning of the system.

1. Research and Planning: We should gather accurate amount of ph requirement, on the basis of differnet crops, soil and sizes of field.

2. Sensor Placement and Installation: We should install the sensors at appropriate distance, ensuring same distance between two sensors.

3. Connectivity: There should be a good connection between ph sensors and control module, and control module and pump.

4. Testing: Aftre implementation of the system in the farm, we should ensure that it works properly by conducting testinng process.

5. Training: We should provide training to farmers, so to make them understand and aware about the ussage of pHSmart.

1. Yield and Productivity: We should compare the crop yield and productivity in fields using the pH sensor system with those that do not use it. This will help determine the impact of pH management on crop growth and productivity.

2. Resource Usage: We should monitor and compare water usage and fertilizer application between fields using the pH sensor system with those that do not use it. 

3. Cost Analysis: We should know its maintenance requirement and its cost, with profit to farmers(due to pHSmart), so to compare them to know whether farmers generate profit or loss.