Which of these conditions could be associated with excessive nitrogen in the soil?

Excessive nitrogen in the soil can lead to dark green leaves due to the overproduction of chlorophyll as the plants experience excessive vegetative growth. This abundance of nitrogen often results in lush, vigorous foliage, but it can come at a cost to the overall health and productivity of the plant, leading to low yields. When a plant has too much nitrogen, it tends to focus its energy on growing leaves rather than developing flowers and fruit, which results in poor reproductive performance and lower overall yield. Hence, while the foliage may appear healthy and verdant, the lack of balance in nutrient levels can be detrimental in terms of crop productivity, as the plant fails to allocate resources effectively between growth and reproduction.