Root rot of carrot

dark brown to black lesions of various shapes. The lesions can merge and eventually cover the entire surface of the carrot. The affected areas are firm, shallow [...] merge, after which whole sections of the leaf will die off. The fungus appears to prefer older tissue. In the field, the disease is difficult to distinguish [...] During humid spells the surviving plants exhibit by necrotic leaf spots Life cycle and appearance of Root rot of carrots The fungus of R. carotae has delicate

Black rot of carrots

appearance of Black rot of carrots Black rot of carrots ( Alternaria radicina ) is a seed-transferred carrot disease. The seeds are the main source of primary [...] cause primary infection of the leaves. Survival can be several years, in the case of black rot of carrots ( Alternaria radicina ) up to 8 years. Damage symptoms [...] spores surviving in the soil are the main source of infection. Especially wheat and barley reduce the number of surviving conidia in the soil. Use resistant

Optimal placement of bumblebee hives

placement of hives The right placement of bumblebee hives can significantly enhance the pollination efficiency of bumblebees. The following steps can be taken [...] advisable to position the hives at a height of 20 – 60 cm above the ground on the south side of the path. This location ensures that the hives receive adequate [...] sunlight, typically on the north side. If needed, the hives can be placed higher inside the crop, at a minimum height of 1.4 meters above the ground, particularly

Treatment of bumblebee stings and allergies

possible after being stung, the person should take an anti-inflammatory (such as aspirin or ibuprofen). Cold compresses should also be applied to the site. In [...] tears loose from the abdomen, taking the venom gland with it. How to prevent bumblebee stings? Bumblebees rarely sting. The chance of being stung by a bumblebee [...] swelling, itchiness and redness at the site of the sting, lasting for only a couple of hours. This can occur directly after the sting, but more generally it

Municipality Venray: biological control of oak processionary caterpillars

In the Municipality of Venray a third of the tree stock in the area, some 11,000 trees, is oak. ‘We’ve been using Koppert’s nematode product Entonem as [...] for the Municipality of Venray. ‘We use nematodes at locations in outlying areas where there might be protected species of butterfly and moth. The major [...] high up on the political agenda, as well as being an important social issue.’ Entonem makes a big difference According to Bergeijk, the results have been

Less use of chemical pesticides due to Natutec Scout

We aim to be proactive should intervention be required." Precision monitoring of pests and diseases The flower grower has been utilizing the crop scout [...] ''This facilitates the rapid identification of trends and shifts in pest and disease development. Of particular note is the utilization of the 'Heatmap' feature [...] inputting all the data into the app, it seamlessly syncs with the computer," the Scout elaborates. "The data is then organized into graphs. This allows for

Pollination

improve the quality and shelf-life of these products. Pollination is the transfer of pollen from the anthers of the flower to the stigma of the flower. [...] If the pollen is transferred from anther to stigma on the same flower it is called self-pollination. Cross pollination, is the transfer of pollen from [...] from the anther of one flower to the stigma of another flower on the same plant or on another plant. Many flowers require insects such as bumblebees or flies

Heterorhabditis bacteriophora

killing the host within a few days. The nematodes then feed and reproduce within the cadaver of the dead host, resulting in the emergence of a new generation [...] nematodes enter the pest's body through natural openings. Once inside the pest, the nematodes release symbiotic bacteria, typically of the genus Photorhabdus [...] 35°C/95°F can be lethal Nematodes are susceptible to ultraviolet light (UV): do not use them in direct sunlight The moisture content of the soil must be kept high

Steinernema feltiae

killing the host within a few days. The nematodes then feed and reproduce within the cadaver of the dead host, resulting in the emergence of a new generation [...] nematodes penetrate the pest's body through natural openings. Once inside the pest, the nematodes release symbiotic bacteria, typically of the genus Xenorhabdus [...] 35°C/95°F can be lethal Nematodes are susceptible to ultraviolet light (UV): do not use them in direct sunlight The moisture content of the soil must be kept high

Steinernema carpocapsae

killing the host within a few days. The nematodes then feed and reproduce within the cadaver of the dead host, resulting in the emergence of a new generation [...] nematodes penetrate the pest's body through natural openings. Once inside the pest, the nematodes release symbiotic bacteria, typically of the genus Xenorhabdus [...] 35°C/95°F can be lethal Nematodes are susceptible to ultraviolet light (UV): do not use them in direct sunlight The moisture content of the soil must be kept high