Fruit Quality disorder may be defined as the abnormal growth pattern or abnormal external or internal conditions of fruits caused by adverse environmental conditions (such as deviation from the normal state of temperature, light, moisture, nutrient, harmful gases, and inadequate supply of growth regulators). Creating a fruit quality disorder diagram lets you analyze and find a cure for any disease that may harm your harvest. As the below disorder diagram illustrates, controlling diseases of fruit trees usually takes multiple approaches, including preventative fungicidal or bacterial sprays. Proper timing is critical. Dormant sprays (usually horticultural oil combined with a fungicide) can help control insects and diseases by killing overwintering pest eggs or growth stages.