• Gummy stem blight

  mature fruits. The symptoms on stems, leaves and inside the fruits may occur together or individually. Life cycle and appearance of Gummy stem blight Mycosphaerella [...] debris and disinfect the greenhouse Choose a cultivar that is less susceptible to internal fruit rot Use clean propagation material During cropping and between [...] on on all plant parts at all times Extra Silicon and/or Calcium nutrition hardens the cell walls and makes it harder for the fungi to enter the leaves

• Bacterial canker of tomato

  clothing and gloves, disinfect tools and greenhouse structures Use a crop rotation in field crops of at least two years and alternate with a non-host crop [...] on stems, leaves and fruits. Leaves and shoots wilt. On the lower leaves, blister-like white lesions occur, which later turn brown and may merge. The leaves [...] the name ring rot. Life cycle and appearance of Bacterial canker of tomato Clavibacter is seed-borne and tuber-borne and primary infection is mostly from

• Downy mildew of Cucurbits

  during propagation and maintaining a warm and dry climate in greenhouses. Use hygiene measures. Start clean, remove crop residues and prevent splashing [...] mildew are not fungi but Oomycetes and related to Pythium and Phytophthora. They survive as oospores. From these oospores or surviving mycelium sporangia are [...] Pseudoperonospora cubensis is a plant pathogen causing downy mildew on cucurbit crops like cucumber, cantaloupe, pumpkin, watermelon and squash. Damage symptoms

• Just How Compostable are Ulti-Mite Sachets?

  October 23, 2019

  degradation finds place in a natural environment and the timeframe is limited to 12 weeks. For example, an apple on the side of the road or a tomato in the green [...] composting conditions in a greenhouse or on a field as conditions cannot be regulated. When an Ulti-Mite sachet, for example, is left on a dry, bare soil bed [...] more than just a ‘foil’. The special foil itself (containing 0% plastic!) is made up of a number of components which together create a perfect breeding

• Premium quality around the world

  March 17, 2023

  specialized packaging, and attention to handling, storage, and shipping conditions. It takes a great deal of knowledge and technology and strict adherence to [...] more complex if a product in the Netherlands needs to arrive in, say, Mexico or Kenya within one or two days. Koppert puts much effort and dedication into [...] It's a commitment that goes beyond product quality. After all, no matter where in the world the products are headed, they need to arrive on time and with

• Crazy roots, hairy roots, crown gall

  dispersed by rain and wind and by humans and tools. Until now, no bacteria have been isolated from crazy roots. This disease seems to be caused by a change in [...] from the Rhizobium infection. Rhizobium rhizogenes puts a Ri-plasmid in the plant tissue and causes a genetic change in the plant. How to prevent Crazy roots [...] known as Agrobacterium tumefaciens or Agrobacterium radiobacter, Agrobacterium vitis, Agrobacterium rhizogenes and Agrobacterium rubi, n ow the first part

• Poinsettia Cultivation Has To Apply IPM

  June 27, 2019

  Poinsettias a year. The total production in Europe is 100 million per year.’ Various Studies Richard is overseeing two tests at the farms Green 05 and Stals [...] their suppliers and the quality of the products. Dutch Poinsettia growers who export to the UK know all about this. For example, there is a zero-tolerance [...] Canada here in the Netherlands and other countries in Europe. The use of the flower in Christmas floral displays makes it a sustainable market, as Dutch

• Bacterial wilt, brown rot

  solanacearum is a plant pathogenic bacterium. It is a soil-borne disease and colonises the xylem, causing bacterial wilt and brown rot in a very wide range [...] Verticillium or Fusarium wilts. Life cycle and appearance of Bacterial wilt, brown rot Ralstonia solanacearum is a quarantine organism in Europe and considered [...] considered a bioterrorist organism in the United States. It is a commonly found soil-inhabitant in tropical and subtropical regions and is transferred by the

• The Importance of Quality at Koppert

  December 3, 2019

  great results and the high egg-laying performance of our Spidex mites. Reason enough for it to be a prime product to keep improving and controlling re [...] conducted once a week and each batch is checked. “While the standard average egg-laying performance for Phytoseiulus persimilis is 10 eggs per female every [...] “The 10 eggs per female norm for a healthy mite was set by the International Organization for Biological Control (IOBC) of which Koppert is a member. The

• Botrytis problems often have company

  December 20, 2021

  Disease Top 10 Topped by mildew and Botrytis Fungi and Bacteria Deserve Greater Appreciation! Botrytis: ten must-knows A Botrytis infection can sometimes [...] are pests that make it easier for the fungus to get a hold. It’s a sinister interaction. Essentially, a crop is an ecosystem in which all living organisms [...] an ideal spot for other fungi, such as Fusarium , or bacteria to strike. Hard to identify Botrytis is a necrotrophic fungus: it lives off dead material.