What is a general symptom of plant diseases caused by environmental agents?

A general symptom of plant diseases caused by environmental agents, such as abiotic factors, is often indicated by widespread effects on the plants. In this context, general leaf drop across all plants signifies a systemic response to environmental stressors. This can occur due to factors such as improper watering, nutrient deficiencies, extreme temperatures, or chemical exposure.

Unlike localized symptoms, such as wilting in specific areas—which may suggest pest or disease issues affecting only particular regions of a plant—general leaf drop indicates that the entire plant or a large group of plants is experiencing a similar stress or decline. This symptom is an important diagnostic tool in identifying issues related to environmental agents, as it reflects a broader pattern rather than isolated cases.

Uniform growth patterns and an increase in plant height, on the other hand, are typically indicative of healthy growth conditions, not disease symptoms.