• Black leg of seedlings

  January 1, 1970

  substrate the plant turns brown. A typical symptom of a Pythium infection is the easy stripping of the skin from the root cortex with a finger nail. Life cycle [...] General Pythium is considered a ‘weak pathogen’, meaning that it can usually only affect plants that are in a sub-optimal condition or suffer from stress [...] of seedlings Pythium belongs to the Oomycetes, a separate group of microorganisms and is therefore not a real fungus. It survives as oospores, resting spores

• Sciarid flies

  January 1, 1970

  They are legless and have a conspicuous black head. The head is equipped with biting-chewing mouth parts. Pupation takes place in a small hole in the ground [...] habitats and are attracted to a broad range of pathogenic and non-pathogenic micro-organisms for oviposition. Indirect damage is caused by the larvae and adults [...] Botrytis and Verticillium, from diseased to healthy plants. Direct damage is the immediate result of larvae feeding on the roots. The larvae feed mainly

• Flies

  January 1, 1970

  has recently developed into a major pest on soft fruits in Europe and North America. Sciarid flies and shore flies are mainly a problem in greenhouses. Their [...] prefer moist substrates that is rich in organic matter. Although they cause little direct damage to plants, they are often a problem due to their large number [...] of the flies. Direct damage is the immediate result of larvae feeding on root hairs and tender roots as well as stem and leaf tissue and fruits. The lesions

• Spical: The Effective Weapon Against All Types of Spider Mite

  October 12, 2020

  spider mite ( Panonychus ulmi) is a pest in apple, pear, plum, cherry, rose, raspberry, and blackberry cultivation. There’s often a biological balance with naturally [...] resistant to chemicals, so Spical really is the ideal solution. Citrus mite The citrus mite ( Panonychus citri ) is not only a problem in citrus fruits but also [...] also in tree nursery crops, such as Skimmia. Spical is a perfect part of a biological control strategy.

• Cannabis aphid

  January 1, 1970

  cannabis ; a.k.a. bhang aphid or hemp aphid) is a very new pest to North America. It was first seen on cuttings originating from Colorado in 2016 and is now [...] to the point that microscopic analysis of the head is required to distinguish them. The hop aphid is common in North American hops production; there have [...] developing on cannabis plants, as well. Damage symptoms The cannabis aphid is a sap sucker, like all aphids , and affected plants are damaged by the loss

• Thrips

  January 1, 1970

  larval instars, a pre-pupa and a pupal instar, and finally the adult insect. The eggs are kidney-shaped and have a white or yellow shell. Before a female deposits [...] mites in sachets can be a good preventive measure as the sachets enable a continuous supply of predatory mites even before the pest is present. Thrips control [...] Several species of thrips are a major problem in greenhouse horticulture. The Western flower thrips ( Frankliniella occidentalis ) is the most damaging species

• Want To Know Whether Spical Will Be Effective? Check, check, and double-check!

  July 20, 2020

  want to know whether your IPM strategy is having an effect. Simply take a magnifying glass to quickly see how Spical is doing. Spider mites often develop in [...] predatory mites in these places. This is also where you’ll be able to see whether your strategy is effective or not. If it is, the affected areas won’t grow in [...] advice is to check the status twice a week. But of course, in acute situations, it can’t hurt to do more checks until you’re sure the matter is under control

• Whitefly – small pest, big problem

  February 2, 2023

  they obtain by extracting sap from plants. The sap contains a variety of sugars; the excess is secreted as honeydew. In many cases, sooty mold will form [...] greenhouse whitefly can transmit more than 25! ‘Tomato Yellow Leaf Curl Virus’ (TYLCV) is one of the most serious. The larvae and mature insects can pick [...] the tobacco whitefly has been considered a major problem in several world regions. Worse still, you only need a few whiteflies to cause damage to your vegetable

• NECANN Boston 2026

  April 7, 2026

  event is being held at the Hynes Convention Center, 900 Boylston Street, Boston on Friday and Saturday, April 24th and 25th. NECANN Boston is a unique [...] large scale and serious home cannabis growers value a clean crop above all so the Koppert booth is a must-visit while at NECANN. Koppert aims to reduce [...] showing off a new product, BioSulfur-S, a biologically derived sulfur solution that was engineered for effortless application, uniform leaf coverage, and

• Spider Mite Control: The Essential Guide

  May 22, 2024

  management is crucial to maintaining plant health and productivity. Understanding spider mites Spider mites are common pests that affect a wide range of [...] resistance to a wide range of pesticides. Identifying the early signs of spider mite damage, such as stippling on leaves and webbing, is essential for [...] damage increases, whole leaves turn yellow and as the chlorophyll is removed, the leaf, and eventually the whole plant, may die. Nymphs and adults of spider