Leaf stripe

Infected plants may be stunted and heads may be distorted and failing to emerge from the sheath. Ear length and the number of kernels may be reduced and kernels [...] systemic infection is the only source of primary infection. The fungus spreads from the seed into the seedling. Conidia are produced on the infected leaves when

Bacterial soft rot, bacterial stem rot

densities. It has also been found in the gut of insects, possibly spreading from decaying vegetation to the growing crop that way. Erwinia carotovora subsp [...] cannot infect healthy green leaves, but can grow in senescent leaves and from there grow through the petiole to the main stem through the xylem vessels

Cactus mealybug

appearance of Cactus mealybug Mealybugs get their name from the fact that the body of the females from the third nymphal instar onwards are covered with a [...] not yet covered with wax. They are actively mobile and known as ‘crawlers’. From the second instar on, they are covered with white waxy exudate and become [...] males form a pupa. After a complete metamorphosis, a winged male emerges from this pupa. The males lack mouth parts and are incapable of feeding. They

Plant health

Bacterial spot

on the leaves are also round and small to start with and slightly raised from the leaf surface. They occur on the abaxial (underside of) leaf surfaces [...] leaves In field-grown tomato and pepper rotate fields to prevent infection from volunteer plants and crop debris Avoid waste piles in the vicinity of the

Powdery mildew

structures are produced, the haustoria, from which the fungus penetrates the plant cell and takes up nutrients from the epidermal layer of plant cells. Most [...] grows inside the leaf. Later, the conidiophores in this case also protrude from the stomata. Conidia are the main means of dispersal. They are dispersed

Citrus mealybug

on the aerial parts of the plant, some species extract their nourishment from roots, whilst others are gall-formers. A few species can also transmit harmful [...] inflict damage on the crop in various ways: Nymphs and females extract the sap from the plant, stunting growth and causing deformation and / or yellowing of [...] with a fine waxy material. They move very little. They can be distinguished from other mealy bugs by their possession of 18 pairs of relatively short wax

Mirical

cardboard strip per plant and, at the end, shake out any remaining M. pygmaeus from the tray into the crop. Hang the cardboard strips over the stalk of a fully-grown [...] situation. Start introduction preventively. Introduction rates typically range from 0.25-5 per m 2 /release. Releases should be repeated after 2 weeks. Consult

Natupol Booster

and the sugar water tank from the hive, then place the liner back inside. Seal the entire hive in a plastic bag, remove it from the crop area, and dispose [...] at the same time collecting pollen to feed the brood. More workers emerge from the brood in the weeks after the introduction, increasing both colony size

Carrot

colours, ranging from the regular orange to black and purple, but also red, yellow and white. The carrots which are produced nowadays derive from the wild carrot [...] indigenous to Europe and southwestern Asia. The carrot plant presumably comes from Persia and was originally produced for its seeds and leaves. Carrots can