Rationale
Increasing the amount of fertilizer applied to a field to maximize crop yields, providing a field with excessive amounts of water to maintain ground saturation, and applying nonselective herbicides to a field at the end of the growing season to eliminate weeds are likely to have a negative impact on the environment.
These practices can lead to various environmental issues, such as water pollution from runoff, soil degradation, and harm to non-target species.
A) Increasing the amount of fertilizer applied to a field to maximize crop yields
Excess fertilizer application can result in nutrient runoff into nearby water bodies, leading to eutrophication, which depletes oxygen in the water and harms aquatic ecosystems. This practice can also contribute to soil acidification and loss of biodiversity in the soil.
B) Providing a field with excessive amounts of water to maintain ground saturation
Over-irrigation can lead to waterlogging, which reduces soil aeration and can suffocate plant roots. Additionally, it increases the risk of salinization and the depletion of local water resources, impacting both agriculture and surrounding ecosystems.
C) Applying nonselective herbicides to a field at the end of the growing season to eliminate weeds
Nonselective herbicides kill all plants they come in contact with, which can disrupt the local ecosystem by eliminating beneficial plants and insects. This practice can lead to reduced biodiversity and may result in herbicide-resistant weed populations.
D) Planting crops in a field with minimal disturbance of the surface soil to reduce soil erosion
This practice, known as no-till farming, is generally beneficial for the environment. It helps maintain soil structure, reduce erosion, and promote soil health, making it an environmentally friendly agricultural method.
Conclusion
The selected practices—excessive fertilizer use, over-irrigation, and nonselective herbicide application—can significantly harm the environment, leading to issues such as pollution, soil degradation, and loss of biodiversity. In contrast, minimal soil disturbance through no-till farming is a sustainable practice that supports soil health and reduces erosion, underscoring the importance of choosing agricultural methods that protect environmental integrity.
