• Two-spotted spider mite control in hardy nursery stock grown in polytunnels

  July 20, 2021

  attached from the plant’s petiole using the sachet’s hook. Once in position, a small incision to the sachet allows the predators to escape over the ensuing 7-10 [...] complexity. The production of a diverse range of plants often leads to a much wider range of pests that require a mix of ICM solutions to keep pests below [...] terms of application rate and distribution, the use of the Mini Airbug® or larger Airbug® is advisable. Due to the greater variation in environmental conditions

• Deltatrap

  n Fold the trap into a triangle Place a sticky insert at the bottom of the trap, with the sticky surface facing upwards Fold both edges at the base of [...] of the triangle upwards Place the Pherodis capsule in the middle of the sticky insert at the bottom of the trap Application Hang the traps approximately [...] pheromone which lures the males of the particular pest into the trap. Once in the trap they get stuck in the glue and are easy to detect, count and identify

• ‘Knowing & recognizing’ now available in 4 languages

  May 23, 2018

  and Spanish. The English version was launched in October last year. ‘The success of the English version underlined the urgent need to have the information [...] it’s important that information concerning the prevalent pests and diseases is accessible to other parts of the world in different languages. ’As both public [...] version is the biggest to date, partly because of the new section on microbiology – an increasingly important component of biological crop protection

• Downy mildew of Cucurbits

  downy mildews, the optimum temperature is around 15 o C and the closer the temperature is to this, the shorter the leaf wetness period that is required. Inside [...] brown. On the underside of the leave fluffy growth appears which is first white and later turns grey-brown. This is actually the sporulation of the pathogens [...] directly and the germ tubes infect the plants either through the stomata or directly by penetrating the cuticula. For germination free water is required.

• Foot rot of cereals

  penetrate the host's tissues. Inside the plant, the fungus colonizes the root and lower stem, leading to the characteristic symptoms of foot rot. As the disease [...] staining of the lower nodes. Long dark streaks may also appear at the stem base. On older plants, infection can produce a true foot rot, where the stem base [...] infection of the grain without obvious bleaching of the ears. The presence of orange/pink spores may also be visible on infected spikelets. As the crop ripens

• Pea blight, leaf and pod spot

  brown to red-brown border. The first infection is often on the primary leaves. The fungus is seed borne and thus also causes post- and pre-emergence damping [...] transmitted on the outside of the seed coat and cause primary infection. The conidia germinate and infect through the stomata or directly through the cuticle [...] of peas. The spots on leaves and pods are round, on the stems they are more elongated. The lesions are light brown, sunken and surrounded by a dark brown

• Crazy roots, hairy roots, crown gall

  disease 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 [...] crown gall The primary source of infection by Rhizobium rhizogenes has not yet been defined. The assumption is that the bacteria survive in the soil, but [...] Disinfect the nutrient solution in order to prevent biofilm growth inside the irrigation system Prevent contact between the plant roots and the gutters in

• Fusarium head blight or scab

  of the plant is infected, either because the seedling was infected or by direct infection of the foot by overwintering inoculum. On the infected foot, conidia [...] spread the disease. Gibberella zeae (Fusarium graminearum ) primarily infects the older, lower leaves. The spores are dispersed upwards to the ears by [...] General Fusarium is a group of soil-borne fungi with many different species. Fusarium is widespread and can infect a range of host crops. Many species

• Bacterial spot

  as they grow. The centre of the lesions may fall out as they become drier. Under humid conditions, the spots may merge with lesions on the petioles and [...] green fruits. The specks grow into brown spots that look like scab. These spots may be surrounded by a halo. In pepper, the spots on the leaves are also [...] °C and high precipitation due to rain, fog or overhead irrigation. Infection is through stomata and wounds. The dispersal is in windblown water drops, mechanical

• Root and crown rot of strawberry

  strawberry. Plant development is slow, growth is retarded and rooting is poor. Transplants look weak and may die. It is hard to visually distinguish between [...] longisetula in the case of leaf spots, such as leaf spot of strawberry and fruit rot reported mainly from Brazil. The genus is quite complex, so the taxonomy [...] rot of strawberry Not much is known about the life cycle. The fungus produces ascospores and conidia, but their role in the epidemic has not yet been