• Black sigatoka disease

  cause the exact same symptoms. They enter the leaf through the stomata. After infection, hyphae emerge from the stomata and either develop into conidiophores

• Downy mildew of Cucurbits

  living plant cells. The pathogens continue to grow inside the leaves and after a while new spore-bearing structures are protruding from the stomata. Because

• Coffee

  most widely grown coffee crops is the Coffea arabica which bears fruit only after three to five years. These shrubs can bear fruit for about 50 to 60 years

• Phytoseiulus persimilis

  persimilis Phytoseiulus persimilis is most effective at temperatures between 13 and 27°C (55 and 81°F) and not effective above 30°C/86°F. Phytoseiulus persimilis [...] by predation. Phytoseiulus persimilis is highly specific and is only effective against spider mites that produce a large amount of webbing. It can move [...] web with ease. This has the advantage that an outbreak is quickly and effectively dealt with, but the disadvantage is that it disappears rapidly in the

• Powdery mildew

  dropping leaves that are not infected yet. It depends on the cultivar how soon after infection this happens. In apple, pear, outdoor grown rose and other Rosaceae [...] promotes germination of spores but inhibits spore production, so the net effect of the RH is very small. Wind and draught in greenhouses promote disease

• Koppert is investing in smarter scouting

  May 29, 2019

  to scout more efficient and more accurately. This app will be available after summer. Although the processes of manually scouting crops is very important [...] relation to one another. The dashboard also integrates the application and effects of chemical corrections. ‘This method gives growers good insight into the [...] number of clients who are testing the app. The scout-app will be available after summer (for now the Netherlands only). ‘Thanks to this innovation, growers

• Bacterial soft rot, bacterial stem rot

  Stem rot is first noticed when plants wilt at the time of first harvest or after that. The pith disintegrates and the stem becomes hollow. Because of the

• Click beetles

  the larvae pupate in the soil in summer. The adults appear about 4 weeks after pupation, but usually remain in the soil until the following spring.

• Melon thrips

  dependent on temperature, but host plant quality also has an influence. After completion of nymph stage, it drops to soil and pupate in soil. There are

• Root rot of carrot

  healthy tissue. The spots can increase in number and size until they merge, after which whole sections of the leaf will die off. The fungus appears to prefer [...] wounds may help control infections, but preventing contamination is more effective. Topping efficiency: Mechanical harvesting always causes some damage to