• Downy mildew of Cucurbits

  required. For most downy mildews, the optimum temperature is around 15 o C and the closer the temperature is to this, the shorter the leaf wetness period that [...] appears which is first white and later turns grey-brown. This is actually the sporulation of the pathogens extruding from the stomata. Life cycle and appearance [...] the leaf, this is where most fluffy symptoms are found. How to prevent Downey mildew Choose resistant cultivars Use a wide crop rotation with non-host crops

• Beetles

  damage Both larvae and adults of beetles can cause damage to crops. The larvae of some species feed on growing tips and roots or chew and bore into stems [...] beetles Beetles can cause serious damage in many greenhouse and field crops by feeding on leaves, roots, or fruits, leading to reduced growth and yield loss [...] beetle control is essential to maintain healthy and productive crops. Biological control of beetles combines preventive monitoring with targeted interventions

• Broad mite

  males and females is different to the others and not used for walking. After moulting to the third larval stage the larvae stay in their cuticle for one [...] attached to the surface and are rather large (about 0.07 mm) compared with the subsequent, active stages. They are transparent and speckled with white dots [...] the adult, but is slightly smaller and has only three pairs of legs. The emerging adult mite is roughly 0.2 mm long, oval and broad, and pale yellow or

• Leaf miners

  photosynthesis and weakening plant growth. Their feeding patterns cause visible leaf damage, lower crop quality and can open the way for secondary infections [...] control is essential to protect plant vitality and maintain marketable yields. Biological control of leaf miners combines effective natural enemies and monitoring [...] monitor adult activity and support timely intervention. With Koppert’s biological solutions for leaf miners, professional growers can keep infestations under

• Swirski Ulti-Mite

  temperatures between 20 and 32°C (68 and 90°F). It is not effective at temperatures below 18°C/64°F. Amblyseius swirskii is sensitive to relative humidity below [...] below 60%. Combined use Can be combined with Orius spp. and whitefly parasitoids. Do not combine with other generalist predatory mites ( Neoseiulus cucumeris [...] thrips species and eggs and larvae of whitefly . Crops Do not use in tomato. Mode of action Predatory mites multiply in the sachet and disperse into the

• Swirski-Mite LD

  temperatures between 20 and 32°C (68 and 90°F). It is not effective at temperatures below 18°C/64°F. Amblyseius swirskii is sensitive to relative humidity below [...] below 60%. Combined use Can be combined with Orius spp. and whitefly parasitoids. Do not combine with other generalist predatory mites ( Neoseiulus cucumeris [...] thrips species and eggs and larvae of whitefly . Crops Do not use in tomato. Mode of action Predatory mites multiply in the sachet and disperse into the

• Spical

  between 13 and 32°C (55 and 90°F) and is sensitive to relative humidity below 60%. Combined use Can be combined with Phytoseiulus persimilis and Feltiella [...] other spider mite species. Crops Do not use in tomato. Mode of action Predatory mites use their piercing mouthparts to extract the contents of their prey. [...] bucket. Carrier Vermiculite. Application Turn and shake the bottle gently before use Push the centre of the cap to open the dosage hole Sprinkle material on

• Pollination checklist tomato

  hive so that it is easily visible both to the bumblebees and to people Ensure the hive is horizontal Protect the hive against condensation and rainwater Not [...] brown within one to four hours and make it possible to check the bumblebees' work. A single visit results in the transfer of enough pollen for pollination. [...] The flower needs to have been pollinated before it closes. Depending on the conditions, a flower will remain open for one to three days. To check on pollination

• Aphidius ervi

  conditions for use of Aphidius ervi The parasitic wasp Aphidius ervi is most effective between 20 and 25°C (68 and 77°F). This natural enemy is not effective [...] the world due to its effectiveness. An Aphidius ervi female wasp can parasitize hundreds of aphids within two days. Aphidius ervi is used for the control [...] nectar and water to sustain themselves. Life cycle and appearance of Aphidius ervi Aphidius ervi is a very dark aphid parasitoid. The waist is entirely

• Leaf stripe

  This is typical for this disease. Infected plants may be stunted and heads may be distorted and failing to emerge from the sheath. Ear length and the number [...] the base of the leaf and the leaf sheath. They gradually extend and become brown and chlorotic and may merge. Eventually this leads to the death of the leaf [...] , which means there is only one disease cycle during the cropping season. The fungus is seed-borne and this systemic infection is the only source of primary