Apple scab

between the cuticula and the epidermis of the plant cells. This causes lesions, on which conidiophores, structures which carry conidia, are formed which extend [...] through the cuticula. The asexual conidia are released and repeat the cycle of infection of new plant parts and spore production. In autumn, the fungus [...] fungus produces new pseudothecia in leaves that have already fallen off the trees. In response to the infection, the plants produce cork as a defence against

May beetle

species which cause damage to crops, the most representative genus is the Phyllophaga . Given the external physical similarities between the adults and larvae [...] ending in the death of the plant. From the third stage onwards, the impact of this pest increases. Damage symptoms Initial damage is not visible in the aerial [...] of the plant, as the larvae only feed on root hairs and organic material during the first and second instars. When they move to the next stage, the larvae

Aphidius colemani

typical of the Aphidiidae. First the host is examined by drumming with the antennae. This gives the wasp the information about whether the aphid is the right [...] Aphidius colemani The parasitic wasp is available in a bottle ( Aphipar ). Spread the material on rock wool slabs or in Diboxes Make sure the material remains [...] searching behaviour, which enables the wasps to track down and parasitize aphids , even when they are at low density. The behaviour of the female during egg-laying

Pepper weevil

during the cooler parts of the day, as this is when they are most active. Another recommendation is to inspect the ground as well as the flowers and immature [...] ‘snout’ which is longer than their head and prothorax. Two days after hatching and feeding, they begin to copulate and subsequently lay eggs in the flowers [...] throw themselves to the ground and keep still when they detect a threat. Damage symptoms The most significant damage occurs with the loss of fruit, whether

Turnip

bulbous taproot in temperate climates around the world. The smaller, tender varieties of turnip are suitable for human consumption. The larger varieties usually [...] About The turnip ( Brassica rapa subsp. rapa ) or white turnip can be categorized as a root vegetable. Turnips are usually produced for its white and bulbous

Fit roots for plant health Technical bulletin 2020 EN

elaborates on the micro life in the root zone which is often underestimated in the current practice but plays a key role in plant health and resilience. [...] multiple drain holes in a slab give a more even water- and mineral pattern in the slab. The composition of the nutrient solution in the root zone is frequently [...] Strive to the right cation balance in the root zone that leads to the right balance in the plant sap. Check if high phosphate levels in the root zone do

Mushroom

effects on humans and desirable taste and aroma. Most mushrooms sold in supermarkets have been commercially grown on mushroom farms. The most popular of these [...] crimini, and portobello. Many other mushroom varieties are also commercially available as growers and breeders search for new and unique tastes for the market [...] toadstool, is the fleshy, spore-bearing fruiting body of a fungus, typically produced above ground on soil or on its food source. Edible mushrooms are the fleshy

Pierce's disease of grapevine

vessels in roots, stems and leaves and multiply. The plant may react by producing gum and tylose, a glue-like substance, in the vessels. The bacteria, gum [...] (peaches and plums): In peach, the canopy of infected plants is compact and umbrella-like due to the shorter internodes. The foliage is denser and the leaves [...] along the margin or the tip from early to midsummer. The necrotic area spreads over the leaf from the margin and is marked by a chlorotic band. In the beginning

Carnation tortrix

colours between the yellow to purple forewings (with a dark brown band in the females and two red bands in the males) and the hindwings (bright orange) ensure [...] infested. The species is particularly troublesome in the culture of carnations and strawberries in greenhouses; the damage inflicted to strawberries and other [...] ensure that the moths of the species are easy to recognize. This colour pattern is most easily observed in the males during flight, and ads in distinguishing

European red mite

generations in one year. The European red mite overwinters in the egg stage; the “winter eggs” are laid in the wooden parts of the host plants in autumn. [...] yellowish red, and more slender and tapered near the hind end. The development from egg to adult goes faster at higher temperatures and takes approximately two [...] large scale of other woody plants and is occasionally a problem on roses and other ornamentals of the family Rosaceae grown in greenhouses. It originates from