• Chafers

  be severe on young plants and especially in grassland and turf. There, secondary damage is often caused by birds and small mammals digging for the grubs [...] They are a serious pest that can cause substantial damage. The adults are not harmful. Damage symptoms Larval feeding on the roots can lead to yellowing [...] sostitialis are 14-18 mm long and yellowish chestnut brown. Amphimallon majalis is somewhat smaller; about 13-15 mm long and reddish-brown in colour. The adult

• Broad mite

  tips, young leaves and flower buds. The mechanism causing the deformation is not yet fully understood, possibly the mites, whilst sucking out the contents [...] case of a more serious infestation, this network becomes so dense that there is no more green tissue visible. In most cases, the main veins are untouched [...] four pairs. The last pair of legs in both males and females is different to the others and not used for walking. After moulting to the third larval stage

• Strawberry aphid

  Damage symptoms Chaetosiphon fragaefolii is one of the most serious pests affecting strawberry plants. Direct damage is caused by the aphids sucking sap from [...] of females. The strawberry aphids overwinter as parthenogenetic forms. There is no sexual stage and no eggs are laid. Adult wingless females of Chaetosiphon [...] strawberry aphid, Chaetosiphon fragaefolii , has a cosmopolitan distribution and is the most important aphid pest of strawberries. It can cause direct damage

• Pea blight, leaf and pod spot

  two-celled conidia are exuded. Secondary infection is by splash dispersal of these conidia. There is no known sexual stage. Ascochyta fungi develop most [...] dark 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 [...] in peas, whereas Ascochyta pisi does occur sometimes at the stem base but is not part of the foot rot syndrome in peas. Infected seeds may have brown areas

• Flowering and Pollination in Blueberry

  April 2, 2019

  initiate the production of berries. But is it only pollinators that are important, or are there other factors to take into consideration? There are a few [...] flowering, and pollination is taking place: the right bio-stimulant at the right growth stage can have a major impact on blueberry production and quality. Spring [...] blueberry growth-cycle. The first is bud initiation in the autumn. Before the plant goes into dormancy, the plant is ‘deciding’ which buds will be vegetative

• Bacterial soft rot, bacterial stem rot

  Erwinia carotovora subsp. carotovora or Pectobacterium carovora is very common, but does not often reach epidemic population densities. It can survive as [...] in senescent leaves and from there grow through the petiole to the main stem through the xylem vessels. High humidity is required for disease development [...] subsp. carotovora has recently been renamed Pectobacterium carotovora . It is one of the pectolytic bacteria causing extensive bacterial rots (bacterial

• Roots Growers positive about Mycotal against whitefly

  benefits: the fully sealed production means the final product is always free of contamination; the product gets to work faster, and it is even more effective [...] only one chemical product against whitefly in tomato that is effective and, unlike other products, also has a low MRL, which is a requirement for small cherry [...] Whitefly is and remains a pernicious pest for growers of tomatoes and other crops. This is further aggravated by the fact that there are almost no effective

• Municipality Enschede: Entonem nematodes against oak processionary caterpillar

  was not enough. She is the project manager of the oak processionary caterpillar for the Municipality of Enschede. ‘We use Koppert’s nematode product Entonem [...] of unusual butterflies and moths. As we only do this at an early stage, there is no secondary effect on other caterpillars . We’ve treated a total of 2600

• Plant Pollinator interactions in high temperatures

  climates, it is assumed that the proper management of bees is sufficient to ensure good pollination. The single biggest problem is that if there is not enough [...] radiation is essential. Under challenging circumstances, proper monitoring of whether pollination is taking place, and whether the setting is 100% is vital [...] industry is the optimum temperature range for pollination. Growers want to keep the greenhouse temperature below 30° C. It is one of the main reasons why greenhouses

• Beetles

  reduced growth and yield loss. Effective beetle control is essential to maintain healthy and productive crops. Biological control of beetles combines preventive [...] and habit. A number of species are a serious pest in crops or stored products. There are many useful beetles as well. For instance, ladybirds contribute [...] control of aphids . Beetles undergo a complete metamorphosis, that is, the larvae do not resemble the adult at all, and must pass through a pupal instar before