Ahold Delhaize: ‘We can't sell anything without substantiated information’

Category: News Date published: November 26, 2018 Ahold Delhaize: ‘We can't sell anything without substantiated information’

Pepino mosaic virus

tobacco), Datura (e.g. thorn apple) and Physalis (e.g. Physalis floridana ) can also act as a host. Damage symptoms The impact of a PepMV infection for the [...] disappears to eventually return later in the season. This means that damage can be more severe during a certain period of the year, with 50-60% non-marketable [...] will be much higher. Symptoms typically appear 2-3 weeks after infection and can significantly impact the yield and quality of crops like tomatoes. Typical

Foot rot of cereals

damping off. This can result in seedling death and poor establishment. Surviving seedlings may develop a brown lesion around soil level. This can develop into [...] into foot and root rot. Symptomless infections can also occur. Foot rot becomes obvious from late stem extension onwards. It results in dark-brown staining [...] dark streaks may also appear at the stem base. On older plants, infection can produce a true foot rot, where the stem base becomes brown and rotten, resulting

Fusarium spp.

species. Fusarium is widespread and can infect a range of host crops. Many species are considered weak pathogens and can only infect wounded or stressed host [...] species. Fusarium is widespread and can infect a range of host crops. Many species are considered weak pathogens, which can only infect wounded or stressed [...] host plants. Three pathogens can be distinguished: Fusarium oxysporum ( Fusarium wilt ): Many different hosts, potato ( Solanum tuberosum ), most vegetables

Bacterial canker of tomato

potatoes or other Solaneceaous crops can be planted for five years. On other fields on the same farm, no seed potatoes can be grown for one year after infection [...] blocked. The bacterium can survive some time in crop residues like volunteer tubers and potato crop residues. Infected tubers can infect healthy tubers [...] the plants in the infected area, with a substantial buffer zone. Replanting can only take place after thorough disinfection has been proven to the authorities

Black root rot of cucurbits

approximately 20 °C whereas at 10 °C the lesions are light-brown. The lesions can be enclosed by pseudostromata: dark coloured tissue that looks like black [...] of wilting it is hard to distinguish from other wilt diseases. The fungus can also cause black fruit rot. Life cycle and appearance of Black root rot of [...] survives in the soil and is a strong saprophytic competitor, which means it can rapidly colonize ‘clean’ or sterilized soil and substrate. It aggregates,

Early blight

and on crop residues and cause primary infection of the leaves. Survival can be several years, up to eight years for several Alternaria spp. Typically [...] which presents itself as spots on leaves, petals and stems. These spots can be distinguished by the dark and brown concentric rings that are caused by [...] brown angular lesions with a yellow halo restricted by leaf veins. Lesions can easily rupture. Other symptoms are brown lesions on stem and foot. On fruits

Fusarium wilt

species. Fusarium is widespread and can infect a range of host crops. Many species are considered weak pathogens and can only infect wounded or stressed host [...] wilts. Other symptoms are brown discolouration of the xylem vessels which can be seen when the stems are cut. In banana, whole plantations may die and the [...] residues Choose resistant cultivars Use clean propagation materials (seed can be treated effectively with hot water) Use clean substrate in greenhouse crops

Verticillium wilt

senescence, without any other typical symptoms. In many crops, the fungus can be present without clear symptoms or with only partial wilting. Life cycle [...] years) in the soil as microsclerotia, small hard survival structures that can withstand high and low temperatures and dehydration. Verticillium dahliae [...] to plant takes place via water, soil particles, tools, etc. Verticillium can also be seed-borne and tuber-borne. The optimum temperature for Verticillium

Bacterial soft rot, bacterial stem rot

is very common, but does not often reach epidemic population densities. It can survive as epiphytic bacteria on various plants or in the soil in low densities [...] wounds, for example pruning wounds. It cannot infect healthy green leaves, but can grow in senescent leaves and from there grow through the petiole to the main [...] development. Erwinia carotovora subsp. carotovora or Pectobacterium carovora can also be found as secondary pathogen in plants that are infected by other pathogens