Bacterial wilt, brown rot

bacterial slime oozing from the cut. When the bacteria transfers to young plants through infected tubers, the wilting and collapse of plants happens rapidly. Leaves [...] signs of wilting during the day which may disappear in the early stages of infection. Under conditions favourable for the bacteria, the whole plant will [...] roots on the stem. The vascular stem tissue is coloured brown and when the stem is cut, bacterial slime oozes from the wound. This is the way to distinguish

Shallot aphid

and shallot, the aphids often occur at the end of the storage period causing malformation of new plants. Life cycle and appearance of The shallot aphid [...] apart from the ends of the antennae and the tarsi. The siphunculi are short an swollen towards the apex. The shallot aphid does not alternate to another host [...] betraying their presence in the crop. Wingless females of the shallot aphid are 1.1-2.2 mm long and shiny brownish green to dirty yellow. Their legs and

Cannabis aphid

states and parts of Canada. The cannabis aphid closely resembles the hop aphid ( Phorodon humuli ), to the point that microscopic analysis of the head is required [...] cannabis plants, as well. Damage symptoms The cannabis aphid is a sap sucker, like all aphids , and affected plants are damaged by the loss of this vital [...] late summer. Early in the season, the aphids are nearly colourless to pale yellow, and as the days become shorter, they change to light green or brown with

About Koppert

About Koppert The answers to many of today’s agricultural and environmental challenges are already out there: in nature itself. At Koppert, we explore [...] natural enemies to control pests, bumblebees for pollination , and microbials that support, protect, and strengthen crops. Improving plant health both above

Flies

damage to crops both directly and indirectly. The type of damage depends on the species of the flies. Direct damage is the immediate result of larvae feeding [...] small flies of the families Sciaridae ( sciarid flies ) and Ephydridae (shore flies). The larvae of these insects generally live on rotting plant material [...] problem due to their large number. Larvae of flies of the family Keroplatidae (mainly Lyprauta sp.) can cause damage in potted orchids. The Spotted Wing

Cottony soft rot

infects the stem base and the roots, whereas the ascospores infect the above-ground plant parts. In greenhouses, usually only mycelium is produced by the germinating [...] germinating sclerotia. The fungus grows quite rapidly inside the plant and kills the host cells. On the infected plant tissue white, fluffy mycelium occurs [...] sclerotia. The fungus also infects seeds and tubers, thereby creating a source of infection for the next crop. The dispersal to neighbouring plants is by mycelial

Crazy roots, hairy roots, crown gall

from crazy roots. This disease seems to be caused by a change in the hormonal system of the plant resulting from the Rhizobium infection. Rhizobium rhizogenes [...] order to prevent biofilm growth inside the irrigation system Prevent contact between the plant roots and the gutters in greenhouses Prevent plant diseases [...] rhizogenes puts a Ri-plasmid in the plant tissue and causes a genetic change in the plant. How to prevent Crazy roots, hairy roots, crown gall Use clean p

Powdery mildew

produced, the haustoria, from which the fungus penetrates the plant cell and takes up nutrients from the epidermal layer of plant cells. Most of the fungus [...] infected. In pepper, the fluffy colonies occur mostly on the underside of the leaf, because the fungus infects the plant by entering through the stomata and there [...] remains on the outside of the plant surface. On the mycelium on the plant surface, new conidiophores are formed, structures which contain new spores, the conidia

Better insights and digital advice with Natutec Scout

major advantage of the Koppert app is the ability of the consultant to check up on things remotely – for Lema Tomaten, that’s the job of Koppert employee [...] soon as the level of infestation exceeds the threshold, it’s a signal to the grower that he needs to take action. This is how Barry Enthoven of Lema Tomaten [...] contact with the Koppert consultant using the Natutec Scout app as a tool. It allows us to take the measures we need to take quickly, based on the advice provided

Neoseiulus cucumeris

Turn and shake the bottle or bucket gently before use o Bottle: Push the centre of the cap to open the dosage hole o Bucket: Use a spoon to distribute Thripex [...] search for food on the underside of leaves. Due to their size and colour they are difficult to spot in the crop. Best conditions for use of Neoseiulus cucumeris [...] have an exit hole Hold sachets by the cardboard strip at the top, to avoid damaging the predatory mites The dosage of Thripex -Plus depends on climate,