• Verticillium wilt

  produces gum in the vessels. The presence of both the fungus and the gum causes the xylem vessels to get blocked, which in turn causes the plant to wilt [...] recover at night. The symptoms may occur only in parts of the plant. Cutting the stalk horizontally reveals a slight discolouration of the vessels, brown [...] wind-dispersed to new hosts. In the senescent tissue, the resting mycelium or the microsclerotia are formed. The spread of the fungus by mycelium growth is

• Early blight

  General The only known stage in all Alternaria species is the asexual stage. Conidia and mycelium overwinter in the soil and on crop residues and cause primary [...] rotation, in particular when spores surviving in the soil are the main source of infection. Especially wheat and barley reduce the number of surviving [...] lesions on stem and foot. On fruits, dark sunken, leathery lesions occur at the side of the stem. Life cycle and appearance of Early blight From the primary infection

• Crazy roots, hairy roots, crown gall

  overgrow the substrate and in severe epidemics the drippers get clogged. In tomato, excessive vegetative growth occurs. Life cycle and appearance of Crazy roots [...] system of the plant resulting from the Rhizobium infection. Rhizobium rhizogenes puts a Ri-plasmid in the plant tissue and causes a genetic change in the [...] crown gall The primary source of infection by Rhizobium rhizogenes has not yet been defined. The assumption is that the bacteria survive in the soil, but

• Bacterial soft rot, bacterial stem rot

  wilt at the time of first harvest or after that. The pith disintegrates and the stem becomes hollow. Because of the bacterial growth in the pith, the stem [...] various plants or in the soil in low densities. It has also been found in the gut of insects, possibly spreading from decaying vegetation to the growing crop [...] seems wet and slimy. Above or below the hollow stem the vascular tissue keeps its normal colour. On the fruits, lesions first are small and sunken, wa

• Deltatrap

  trap, with the sticky surface facing upwards Fold both edges at the base of the triangle upwards Place the Pherodis capsule in the middle of the sticky insert [...] dispensers. The dispensers release a species-specific sex pheromone which lures the males of the particular pest into the trap. Once in the trap they get [...] get stuck in the glue and are easy to detect, count and identify. Trapping males also aids in reducing the number of eggs laid by females as they fail to

• Pepino mosaic virus

  (PepMV) is one of the most economically significant viral diseases in greenhouse tomato production worldwide. Due to its rapid spread and impact on fruit [...] Virus (PepMV) is the use of cross-protection with a mild strain, such as V10 . What is V10? V10 is a mild strain of Pepino Mosaic Virus used in a controlled [...] reduces symptom severity and economic damage How V10 Works After application: V10 infects the plant in a controlled manner The plant activates its natural

• Bacterial spot

  a halo. In pepper, the spots on the leaves are also round and small to start with and slightly raised from the leaf surface. They occur on the abaxial [...] volunteer plants and crop debris Avoid waste piles in the vicinity of the greenhouse or field Resistant cultivars of pepper are available and should be used [...] grow. The centre of the lesions may fall out as they become drier. Under humid conditions, the spots may merge with lesions on the petioles and stems and

• Gummy stem blight

  drops, tools and hands of workers. The ascospores are the main source of dispersal of disease upwards in the crop and the conidia for spread of the disease [...] cucumber, the most important symptom is internal fruit rot, which can only be recognized from the outside by the small narrowing of the tip of the mature fruits [...] a cucumis in cucumber causes brown lesions on the foot and higher up on the stem. On the lesions, golden-brown gummy drops occur, hence the name gummy

• Woolly apple aphid

  sheltering in cracks and under loose bark. The nymphs become active in late March or April (in the northern hemisphere) and around the end of May, large [...] females of the woolly aphid are 1.2-2.6 mm long, purplish brown and covered by masses of white, mealy wax. The siphunculi are pore-like and the cauda is [...] trees but the sticky masses of “wool” may contaminate leaves and fruits and can be a nuisance at harvest time. Life cycle and appearance of Woolly apple

• Hunting season starts early with Anso-Mite

  February 18, 2021

  comes in to fill the gap early in the growing season.’ Natural range and crop Anso-Mite is a naturally-occurring species in many countries and is found throughout [...] strength to the thrips management strategy. The Koppert A. andersoni strain has been tested in several field experiments in the Netherlands and Spain. “We [...] present.’ Anso-Mite introduction in UK Regulations in the UK have severely limited the introduction of some of Koppert’s biocontrol solutions for some