5.1 Summary of findings
From the results, we can conclude that plant growth is affected by the condition and amount of air pollutants. The air pollutants will reduce amount of light that can be used for photosynthesis, thus rate of growth will be slower.
5.2 Practical Applications
From our experiment, we found out that plants cannot grow or thrive in hazy conditions simulated in our experiment. Our team can recommend that for people growing plants in regions prone to Haze such as Singapore to keep their plants in a closed environment with non-polluted air. This will help to keep the plants healthy.
As hazy conditions affect plant growth, farmers can use this research and apply it too. They can know how much their crop can yield in a certain amount of pollution or whether it is healthy to plant crops in a certain area.
As haze contains sulphur dioxide, plus it is a primary element in acidic precipitation. Scientists can calculate the sulphur dioxide concentration in the air and can predict and understand more about acid rain. Farmers can be informed whether their location is prime for plants to grow, and leave them to make the choice to move or remain.
5.3 Areas for further study
Areas that can be researched into further depth are what could be burnt such that our experiment would be more effective such that the results from the experiment would be clearer. For instance, we could burn wood to better simulate the haze environment since the cause of the haze is due to the burning of wood.
Areas that can be further studied and researched into greater depth could be what kind of burning materials create the most haze. For instance, we could burn another material that creates a constant flow of smoke and is easier to burn.
Areas that can be further studied and researched are what kind of fuels when burnt creates the air pollutants that affect plant growth the most. For instance, we could test which fuels, when the same amount of each fuel is burnt, creates air pollutants that stunt the growth of the plants the most.
Areas that can be further studied and researched is what species of plants are least affected by its environmental factors. We can experiment to find out whether these species can thrive no matter the environment and investigate why. For instance, we could redo our experiment, but this time have a greater variety of plants, and test which plants are most self-sufficient and durable to the quality of air.
When adding soil or water to the set-ups instead of measuring the amount through volume, measuring the amount through grams would be a more accurate. As soil or water particles can be compressed, thus increasing the volume of soil, which in turn may affect the growth of the plants, hence making the results unreliable or inaccurate.