Grey mould

Botrytis cinerea ) is part of the foot rot complex, which causes rotting of the foot and may cause death of the plants. In cucumber and tomato the fungus causes [...] that it excretes compounds that kill the plant cells and then uses the content of the plant cells as nutrients. On the infected area, new spores are formed [...] lesions on pruning wounds. These lesions may encircle the stem, so the part of the plant above the lesion wilts and dies. In vegetables and strawberry,

Municipality Doetinchem: Entonem nematodes managing oak processionary caterpillar

breaching the monocultures of the oak and stimulating the natural enemies of the oak processionary caterpillar. As already stated, the use of nematodes is an [...] oak trees in the forests and plantations around Doetinchem. Marc van Rijswijk is the spokesman for Buha, the implementing organization for the Municipality [...] nematode product Entonem . A major advantage is that the bycatch of other caterpillars is much lower, which is a great benefit to biodiversity. In mid-April

In Partnership with Nature

produced in the USA annually, 80% of which is destined for the trash. Koppert is consistently striving to not only improve our products, but also the way that [...] Partnership with Nature For the better health of people and the planet outperformed the Styrofoam packaging in maintaining the required temperature for [...] shipping. Over the next several months, you will start to see this new packaging. At first the switch to the new packaging will be gradual and it is expected

Cotton aphid

from the plant and disturb the balance of growth hormones. As a result, the plant’s growth is retarded giving rise to deformed leaves or, if the infestation [...] as chrysanthemum and kalanchoe. The cotton aphid ( Aphis gossypii ) is distributed throughout the world but prefers the warmer regions. It has been a pest [...] skin, betraying their presence in the crop. The cotton aphid can be distinguished from other aphids by the colour of the two cornicles (siphunculi). These

Bacterial wilt, brown rot

s 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 [...] . Race 3 is pretty much restricted to potato and tomato. Whereas other races have optimum temperatures of 35-37 °C, the optimum for Race 3 is 27 °C, which [...] vascular browning is common with bacterial slime oozing from the cut. When the bacteria transfers to young plants through infected tubers, the wilting and collapse

Plant Pollinator interactions in high temperatures

humidity is too low or radiation is too high. strong, and the climate in the greenhouse is consistent. No easy feat, but the payback is more than worth the effort [...] protection, the plant aborts the fruit to reduce fruit load on the plant and directs the assimilates to the vegetative growth of the plant. This is undesirable [...] on the first fruit is skipped. The plant looks fine, strong, and healthy. However, the conditions in the greenhouse give the plant the impulse to transpire

Pepino mosaic virus

of which strain – that causes the infection is one them. The moment in the crop cycle when the infection takes place is another factor that might have [...] Four different strains of the virus are known: the Chilean strain (CH2), the European strain (EU), the Peruvian strain (LP) and the American strain (US1). [...] Europe, the Chilean strain (CH2) is dominant and present in 90% of the infections. If more strains are found in case of infection, the infection is usually

Predatory Mites Whitepaper

limonicus has the highest numerical response to whiteflies and is the best option when the pest pressure is high. • In laboratory trials the oviposition [...] healthy, good growing plant canopy the humidity close to the leaf surface, where the mites live, is higher than in the surrounding air. High humidity, e [...] high temperatures (30°C). At 15°C there is till some predation but development is very slow. If the temperature is below 8°C for a longer time, A. swirskii

Amblydromalus limonicus

us limonicus is not recommended as it is hindered by the glandular hairs on the stems and leaves and does not build up a population. How to use Amblydromalus [...] control Amblydromalus limonicus is used for the control of the following pests: Thrips Whitefly Amblydromalus limonicus is a generalist predatory mite feeding [...] fluids from leaves, which is useful for instance in sweet pepper crops as the predatory mite can establish in the crop before the pest appears. Amblydromalus

Beneficial Nematodes against Horticultural Pests

and liquify the insect from the inside. The nematodes feed on the digested tissues of the dead insect and reproduce in large numbers. The pest insect stops [...] such as the pupae and larvae of thrips, the larvae of vine weevils and several beetles, caterpillars, the larvae of sciarid flies and many others. How does [...] pest best? This is an overview of the nematode-pest combinations that have been tested successfully so far. However, effectiveness of the nematode solution