Among the most common diseases and pests honeysuckle (Lonicera) Common cancers include gray rot, viral mosaic, black fungi, acacia scoria, and moths. Without the use of timely measures to combat pests and diseases, the honeysuckle can lose its decorative effect, and with a strong defeat and die at all.
Common honeysuckle diseases and their treatment
The causative agent is a mushroom Nectria galligena. The bark of the stalks turns brown, dries out and cracks. Deep ulcers with raised edges are formed under the bark. Over time, the wood dies off and the stalks dry out. Along the edges of the ulcers are observed cancerous ulcers. On the stems, the sporulation of the fungus looks like whitish cream pads.
Protection measures Timely cut the stems with ulcers, spray the plants until the leaves grow into a Bordeaux mixture or its substitutes.
Pathogens - fungi Microsphaera lonicerae and Phyllactinia suffulta. The first causes the formation of white felt bloom on both sides of young leaves and shoots, and the second - only on the lower side of leaf blades. With this disease, the honeysuckle leaves dry up prematurely, the shoots are deformed. The infection persists in plant debris and in the bark of the shoots.
Protection measures Collect the plant residues, cut off the affected shoots. To treat this disease of honeysuckle, spray the bushes at the first symptoms of the disease with one of the following drugs: swift, rayon, pure color, tiovit-Jet.
The causative agent is a mushroom Botrytis cinerea. Brown blurred spots appear on the leaves without edging.
As can be seen in the photo, with this disease of honeysuckle over time the spots merge with each other, the fabric dries and cracks:
Smoky gray sporulation of the fungus often develops. The infection persists in plant debris and in the bark of the affected branches.
Control measures. Collect the plant residues, thin out the bushes, timely remove the drying branches.
Reza Mosaic Virus
Pathogen - virus mosaic-rezuhi Arabis mosaic virus (AMV). Symptoms are very diverse - from yellow speckled, wrinkled, to yellowing veins and bushiness of young plants. The virus is spread by nematodes and with planting material.
Control measures. Remove and burn individual shoots in time and discard the affected bushes.
Pathogens - mushrooms sapro-trophies Cladosporium eiegans and Fumago vegans. They settle on weakened plants and on sweet aphid secretions, forming a film of dirty black color on the surface of leaves and bark of the branches.
The infection persists on plant debris and in the bark of the affected branches.
Control measures. Collect the plant residues, thin out the bushes, prune the dried branches. Spray the bushes in the spring before the formation of black fungi on the leaves and after flowering Bordeaux mixture or its substitutes (HOM, Abiga-Peak).
See how honeysuckle disease is treated in these photos:
Honeysuckle Pest Control
Acacia spatula (Parthenolecanium corni) - small sucking insect.
The female is convex, rounded-oval, red-brown in color, with dark transverse stripes, length 3-6,5 mm, width 2-5 mm. It is immobile, tightly attached to the bark of branches, lays up to 2800 eggs. Hatching eggs from larvae crawl and stick to petioles and leaf plates.
The male of this pest is somewhat different from the female according to the description: it is covered with white bloom, it flies well. A massive summer of males of these pests of honeysuckle is observed in June. Older stray larvae hibernate on the branches, and in the spring they move to young shoots and stick to the shoots.
Control measures. Remove shields, spray bushes at the beginning of the summer to destroy hovering larvae with flyover, fufanon, aktellik.
If several leaves are folded into a longitudinal tube and eaten from the edges, then one of the leafworms probably harms: net (Adoxophyes orana), various (Choristoneura diversana) or herbal (Zelotherses paleana).
The caterpillars of the first moth are dark gray, with a brownish head, being harmed in May-July; the second is grayish-green, with a reddish-brown head, harmed in May-July; the third is blackish, with white spots and a black head, harmed in May-June.
Control measures. Cut and destroy individual nests, spray bushes immediately after flowering with phyto ferm, fufanon, kemiphos, karbofos, aktelik.