Final answer:
Mona uses a Smith injector as a proportioner to mix concentrated liquid fertilizer with water in her greenhouse.
Step-by-step explanation:
Mona is using a type of proportioner or injector commonly referred to as a Smith injector. This device is specifically designed to mix a concentrated liquid fertilizer with water to provide a nutrient solution that is delivered directly to plants in Mona's greenhouse watering system.
Proportioners like the Smith injector ensure that the fertilizer is diluted to the correct concentration, providing plants with essential nutrients in the right amounts. The use of nitrogen-based fertilizers is prevalent among farmers because nitrogen is a crucial component for plant growth.
It is central to the synthesis of important plant substances, such as chlorophyll and amino acids. By adding nitrogen-based fertilizers, farmers can enhance plant growth, increase crop yields, and improve the overall quality of their produce.