Mealybugs and scales
fruit are concerned, these often drop off; plant sap is low in proteins and rich in sugars. In order to gain an adequate intake of protein, mealybugs must [...] scales also produce honeydew (on which moulds grow) resulting in considerable damage in ornamental and fruit crops and loss of value. Armoured scales do [...] sale, and the reduced level of photosynthesis in the leaves also reduces flower and fruit production; in ornamental crops, the mere presence of mealybugs