NatuGro in strawberry

are supported in handling their challenges on a daily basis. Our consultants work with growers to develop a customized program specific to their soil conditions [...] system can boost strawberry growers’ crop yields by up to 10 percent. With a proprietary combination of micro-organisms, bio-stimulants and tailored advice [...] Ideally suited for California growing conditions, the NatuGro system features a suite of naturally derived products that enhance: Early-season vigor Plant

Knowing & recognizing

characteristics. Shop now Koppert - A knowledge company The use of biological control is not a simple process, it has become a complex system in which many aspects

Pepino mosaic virus

(PepMV) is a single-stranded RNA-virus (Potexvirus genus, Fexiviridae family) that was originally isolated from pepino ( Solanum muricatum ), a South American [...] and Physalis (e.g. Physalis floridana ) can also act as a host. Damage symptoms The impact of a PepMV infection for the tomato grower is variable. Several [...] very intense for a few weeks and then disappears to eventually return later in the season. This means that damage can be more severe during a certain period

Fusarium spp.

Fusarium spp. is a group of soil-borne fungi with many different species. Fusarium is widespread and can infect a range of host crops. Many species are [...] to mammals so maximum levels have been determined. Fusarium sambucinum (a.k.a. F. sulphureum ) causes dry rot of potato. The rot is dark and wet at first [...] pink sporulation becomes visible. Fusarium solani is a complex of many species, who collectively have a very broad host range. F. solani causes foot and/or

Grey mould

area, new spores are formed within a few days. Under circumstances unfavourable for germination, the spores can survive a few days on the plant surface and [...] greenhouse crops Remove diseased plants or plant parts in a closed plastic bag In tomato: prune with a knife and not by hand, to avoid rugged, irregular wound [...] General Grey mould ( Botryotinia fuckeliana / Botrytis cinerea ) is a commonly found fungus in many environments. It survives in plant parts like bulbs

Rhizoctonia solani

long believed to be a sterile fungus, but recently it was discovered that the fungus produces basidiospores. These spores don’t play a role in the epidemics [...] ff’), both before and after emergence. A typical symptom of root infection is that the taproot is reduced to a thread. Reddish-brown lesions occur on the [...] mycelium grows in a typical way, with branching at 90 degree angles. This feature makes the fungus more easily identifiable under a microscope. Within

Black leg of seedlings

substrate the plant turns brown. A typical symptom of a Pythium infection is the easy stripping of the skin from the root cortex with a finger nail. Life cycle [...] General Pythium is considered a ‘weak pathogen’, meaning that it can usually only affect plants that are in a sub-optimal condition or suffer from stress [...] of seedlings Pythium belongs to the Oomycetes, a separate group of microorganisms and is therefore not a real fungus. It survives as oospores, resting spores

Bacterial wilt, brown rot

solanacearum is a plant pathogenic bacterium. It is a soil-borne disease and colonises the xylem, causing bacterial wilt and brown rot in a very wide range [...] Ralstonia solanacearum is a quarantine organism in Europe and considered a bioterrorist organism in the United States. It is a commonly found soil-inhabitant [...] incidence with up to 250% Quarantine measures are in place, including a five-year ban on using a field for potato cropping after infection of potatoes from that

Downy mildew of Cucurbits

prevent Downey mildew Choose resistant cultivars Use a wide crop rotation with non-host crops Prevent a humid microclimate. Achieve this by lowering crop [...] General Pseudoperonospora cubensis is a plant pathogen causing downy mildew on cucurbit crops like cucumber, cantaloupe, pumpkin, watermelon and squash [...] living plant cells. The pathogens continue to grow inside the leaves and after a while new spore-bearing structures are protruding from the stomata. Because

Crazy roots, hairy roots, crown gall

seems to be caused by a change in the hormonal 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 plant. How to prevent Crazy roots, hairy roots, crown gall Use clean propagation material Use a strict hygiene protocol