Black root rot of cucurbits

Phomopsis sclerotioides causes grey-black spots with a dark demarcation line on cucumber roots. The lesions are slightly sunken and are mostly formed around [...] disease, only vascular tissue remains because the cortex (outer layer) has rotten away. Infection in the early stages of the crop results in stunted growth [...] growth and smaller leaves with an intense green colour. Severe infection in this stage may kill the plants. In case of a less severe infection, the vines may

Navigating Energy Efficiency, Greenhouse Lighting & Pollination Success

efficacy stands out as a linchpin in this scenario, directly influencing crop yield and quality. The success of growers hinges on a delicate balance, particularly [...] complete their daily pollination tasks. This is especially important during the four to six weeks before the shortest day of the year (December 21), and the [...] is different to human vision. Bumblebees need approx. 30-40 umpl of this Beevision, on the entrance of the hives and around the flowers in the crop, to do

Newsletter

Koppert UK Conference: 19th October 2023

Register Your Interest To Attend This Year's Koppert UK Conference Koppert UK will be hosting a special conference on October 19th at The New Jakemans [...] throughout the day to discuss all things entomological. If you are fostering any grower related concerns or seeking new opportunities, this conference will [...] invitation, please fill in the contact form on the link below: Contact | Koppert UK We look forward to welcoming you all on October 19th as we work together to

Artificially lit crops pollination advice

daylight occurs (particularly 4 to 10 weeks before or after the shortest day, depending on latitude and environment) rapid decline in colonies could occur. In [...] pollination rates. In this article, we will delve into the unique aspects of pollination in indoor environments and provide valuable advice on how to overcome [...] adequate daylight. On average, bumblebees are allowed to fly between 10:00 a.m. and 2:00 p.m. (4 weeks before/after the shortest day), with an additional

Pepper weevil

darker after a few days; after three to six days, this stage is fully complete and it becomes an adult. On average, the cycle takes 21 days. [...] When they are already present on the crop, the best approach is to monitor them during the cooler parts of the day, as this is when they are most active [...] the Solanaceae family, especially the Capsicum genus (peppers); they feed on this fruit, lay eggs, and complete their lifecycle. They must be carefully and

Aphidius ervi

material on rock wool slabs or in Diboxes Make sure the material remains dry and is not moved from its introduction site for at least a few days The dosage [...] An Aphidius ervi female wasp can parasitize hundreds of aphids within two days. Aphidius ervi is used for the control of the following pests: Potato aphid [...] dosage of Ervipar depends on climate, crop and aphid density and should always be adjusted to the particular situation. Start introduction preventively soon

Ephedrus cerasicola

persicae on paprika, lasts 33.7 days at 15°C, about 21 days at 21°C,and 19 days at 24°C. The adult lifespan increases gradually from 2.8 days at 32°C, [...] of the mummy. In practice, mummies are often found on the plant, but also in hidden places such as on ropes, under the rims of the pots, etc. [...] parasitic wasp that belongs to the family Braconidae and subfamily Aphidiinae. This natural enemy is used for the control of aphids in agricultural and horticultural

Early blight

veins. Lesions can easily rupture. Other symptoms are brown lesions on stem and foot. On fruits, dark sunken, leathery lesions occur at the side of the stem [...] hours, with lesions occurring as rapidly as two to three days later and sporulation within five days. Infection is both direct and through wounds and stomata [...] species is the asexual stage. Conidia and mycelium overwinter in the soil and on crop residues and cause primary infection of the leaves. Survival can be several

Praon volucre

period of 18 days. Fifty percent of the eggs are laid during the first five days. At 23-25°C, the developmental time for Praon volucre on Macrosiphum [...] euphorbiae from oviposition to adult emergence is 13 days. At 16°C, the developmental time slows down to 26 days. Life cycle and appearance of Praon volucre The [...] until the small holes align with the opening The dosage of Aphiscout depends on climate, crop and aphid density and species, and should always be adjusted