Phytophthora blight

above-ground plant parts, leaf wetness is required. Dispersal is by wind and rain causes the pathogen to be returned to the soil from infected plants. Dispersal [...] circulation Disinfect recirculating nutrient solutions Prevent plant diseases by optimizing plant potential and crop resilience. [...] and attract the zoospores. The pathogen grows into the stem and on the plant surface and new sporangiophores (structures containing sporangia, a type

Pepper

habanero. The pepper plant is native to tropical America. Pepper plants are perennials, but are typically grown as summer annuals. Pepper plants are propagated [...] The pepper plant (genus Capsicum ) belongs to the nightshade family Solanaceae. This plant genus includes all varieties of peppers, including the mild [...] into the soil or by transplanting seedlings in a greenhouse environment. Plant height can vary depending on species and variety. Tall varieties grown in

Bean seed fly

near the base of bean plants, and upon hatching, the larvae burrow into the soil and feed on the seeds and roots of young plants. Larvae mainly attack [...] emerged roots and cotyledons. Plants that survive are weak and less tolerant to subsequent attacks by other pests and plant pathogens. This feeding activity [...] of bean seed fly infestation include: Wilting or yellowing: Infested bean plants may exhibit wilting or yellowing of leaves, particularly in young seedlings

Loose smut of wheat

of seeds from infected fields for further cropping Prevent plant diseases by optimizing plant potential and crop resilience. [...] the seed germinates, the mycelium of the fungus grows upwards inside the plant into the growing tip and the seed primordia. It only becomes visible after

Loose smut of barley

of seeds from infected fields for further cropping Prevent plant diseases by optimizing plant potential and crop resilience. [...] the seed germinates, the mycelium of the fungus grows upwards inside the plant into the growing tip and the seed primordia. It only becomes visible after

Cut flowers

Hippeastrum is the Latin name for a bulbous plant that originates from Central and South America. It is a bulb plant from the large family of the Amaryllidaceae [...] a bulb as a cut flower or sold as a pot plant. Freesia : The freesia is a herbaceous perennial flowering plant from the Iridaceae family. The cultivated [...] About Many plants with an ornamental value are specially grown as cut flowers. This concerns various types. Origin, cultivation method and substrate differ

Black bean aphid

the transmission of plant viruses. Infestations start usually at the younger parts of the plant but can spread all over the plant. Nymphs and adults extract [...] extract nutrients from the plant and disturb the balance of growth hormones. As a result, the plant’s growth is retarded giving rise to deformed leaves [...] early enough in the season, the death of young plants. Retarded growth and defoliation reduce yield. Plant sap is rich in sugars, but has a low protein content

Sciarid flies

generally do little harm to healthy plants, sciarid flies are particularly problematic in cuttings and other young growing plant material. Damage symptoms The [...] diseased to healthy plants. Direct damage is the immediate result of larvae feeding on the roots. The larvae feed mainly on decaying plant material and on [...] pathogenic fungi. Because the larvae move very little, plant death is generally local. Young plants that are kept humid and well-watered are particularly

Mottled arum aphid

greatly reduce plant vigour and kill the plant through sucking of plant sap. However, also at lower densities the aphids can damage plants because they produce [...] and also result in an unattractive plant with a much lower market value. Neomyzus circumflexus can also transmit plant viruses. Life cycle and appearance

Oleander aphid

principal host plant, oleander. Damage symptoms The colonies of bright yellow aphids can easily be seen on the shoots of the host plants. The damage caused [...] called the milkweed aphid, is a common pest of several important ornamental plants in the families Apocynaceae and Asclepiadaceae. It is commonly found feeding [...] deformed. Repeated heavy infestation throughout the year can lead to stunted plant growth. Life cycle and appearance of Oleander aphid The oleander aphid is