High production in protected cultivation is due to

High production in protected cultivation is due to High photosynthetic efficiency.
Protected cultivation is a process of growing crops in a controlled environment. This means that the temperature, humidity, light and other factors can be regulated as per the requirement of the crop. This assists in healthier and larger produce.
This type of cultivation prevents weed growth and acts as a barrier to soil pathogens. Accelerates uptake of micronutrients from the soil by the active root zone. Conserves soil moisture thereby reducing the irrigation water requirement of the crop. Enhances quality of the product with cleaner crop.