Damping-off

subsequently zoospores are produced. Zoospores are spores with flagellae, which enable the spores to move through water. The zoospores are chemically drawn to [...] where the side roots are formed or through other similarly damaged spots. On the infected plant, new sporangia with zoospores are formed, that allow the [...] water content ( > 70%) of the soil or substrate. Oospores are dispersed when soil particles are moved around by humans or machinery. Pythium can survive

Pierce's disease of grapevine

peach, bacteria are found in high numbers in the roots, whereas in plum, high numbers are found in leaves and fruits. The bacteria are transferred from [...] remain on the plant longer, but fewer and smaller fruits are produced. In plums, the first symptoms are irregular chlorosis or browning of leaves along the [...] leaves per branch are showing symptoms, but later the growth stops and the plants die, usually within a few years. Citrus fruits: Symptoms are variable interveinal

Charcoal rot

stay green. The first symptoms are mostly found after plants are well established and after plants begin bearing fruit or are subjected to stress. Severely [...] causing charcoal rot. It has a very wide range of host crops, many of which are economically important food crops. Damage symptoms In strawberry, this pathogen [...] internal tissues of the main roots. In most crops, necrotic lesions on the roots are the first symptoms, followed by wilting, dropping of leaves and collapse of

Customer experiences

Pollination checklist outdoor

crop and the presence of other pollinating insects. Bumblebees and honeybees are able to complement each other's pollination work and can therefore be released

Wheat bunt

slightly stunted. Infected (bunted) heads are slender and remain green longer than healthy heads. The glumes are opened either on some or on all spikelets [...] types are distinguished. The filiform basidiospores fuse in the middle with a basidiospore of the other mating type so that H-shaped structures are formed [...] wheat. Damage symptoms Plantsinfected by Tilletia tritici and Tilletia laevis are hard to distinguish from infected plants before head emergence, although affected

Verticillium wilt

Verticillium species are non-specific plant pathogens. Many species are saprophytes, V erticillium albo-atrum and Verticillium dahlia e are the most important [...] cause wilting of plants. The wilting starts at the lower leaves. These leaves are pale-green, then orange-yellow. In the beginning the plant seems to recover [...] purple brown stripes occur on the stem. In tomato, sometimes V-shaped lesions are formed on the leaf, between the veins. 'Early dying' disease of potato only

Spidex Vital lives up to its promises

switch to Spidex Vital . His initial experiences in using the new product are positive. ‘I’ve known Phytoseiulus my whole life,’ the cucumber grower begins [...] Although spider mites prefer a drier greenhouse climate, predatory mites are somewhat less keen on it. Spidex Vital still has to prove itself in such dry

Blight of pepper

cells which are resistant to desiccation) or mycelium. Zoospores are formed from the overwintering structures which infect the host. Zoospores are spores with [...] of Blight of pepper Phytophthora species are very destructive organisms belonging to the Oomycetes and are therefore strictly speaking not fungi. They [...] hores (structures containing sporangia, a type of spores) with sporangia are formed that protrude through the stomata. Secondary infection is either by

Apple collar rot

cells which are resistant to desiccation) or mycelium. Zoospores are formed from the overwintering structures, which infect the host. Zoospores are spores with [...] of Apple collar rot Phytophthora species are very destructive organisms belonging to the Oomycetes and are therefore strictly speaking not fungi. They [...] hores (structures containing sporangia, a type of spores) with sporangia are formed, that protrude through the stomata. Secondary infection is either by