• False codling moth

  green citrus fruit the peel around the penetration hole eventually assumes a yellow colour. On ripe fruit this area is orange, but eventually becomes sunken

• Mealybugs and scales

  the sap from the plant, stunting growth and causing deformation and/or yellowing of leaves, sometimes followed by defoliation. The overall effect reduces [...] contents of epidermal cells, into which they inject toxic substances that cause yellow, red or brown patches to appear on leaves and fruit. This can eventually

• Citrus mealybug

  the sap from the plant, stunting growth and causing deformation and / or yellowing of leaves, sometimes followed by defoliation. The overall effect is a reduction [...] shorter than 20% of body length. They produce little wax, so that the light yellow to pink body is visible through its waxy covering. There is often a darker

• Veni Biosulfur

  antioxidants and vitamins. Pack size 5 litre container. Presentation Light yellow, soluble concentrate. Content 50% (w/w) sulphur. Preparation Shake the container

• Early blight

  on leaves. Those spots then turn into dark brown angular lesions with a yellow halo restricted by leaf veins. Lesions can easily rupture. Other symptoms

• Fusarium wilt

  Fusarium oxysporum is the species causing vascular wilt. First the leaves turn yellow and wilt, mostly on one side of the plant. Finally, the whole plant wilts

• Aphids

  their rear end. Color: Aphids can be a variety of colors, including green, yellow, black, brown, pink, or red, depending on the species and their stage of [...] This can result in stunted growth, curling or distortion of the leaves, yellowing, or discoloration. They may also excrete a sugary substance called honeydew

• Broad mite

  emerging adult mite is roughly 0.2 mm long, oval and broad, and pale yellow or yellow-green, depending on the type and quantity of food consumed. Female

• Downy mildew of rose

  lesions on the upper leaf surface, bordered by the veins, which are first yellow and then turn brown. On the underside of the leaf fluffy growth appears

• Amblyseius swirskii

  The nymphs are larger than the larvae, have eight legs, and are a whitish yellow colour. Adult mites have eight legs, are a translucent white in colour, [...] the prey eaten, and varies from almost lucent whitish to opaque white or yellow. Due to their size and colour they are difficult to spot in the crop. Best