• Aphytis melinus

  wasps in the areas of the field where scales are present. Release early in the morning or late in the afternoon. Release the same day the product is received [...] points. Use the lid, the 8 strips of green paper, the cotton on the bottom and the jar itself. Make a homogeneous distribution throughout the plot. Release [...] parasitic wasp is greatest around 25ºC. The lower temperature limit for its development is 13ºC and the upper limit is 38ºC. Behaviour of the parasitic wasp

• Cotton aphid

  adulthood. With each moult they shed white skin, betraying their presence in the crop. The cotton aphid can be distinguished from other aphids by the colour [...] and kalanchoe. The cotton aphid ( Aphis gossypii ) is distributed throughout the world but prefers the warmer regions. It has been a pest in European greenhouses [...] plant’s growth is retarded giving rise to deformed leaves or, if the infestation occurs early enough in the season, the death of young plants. Retarded growth

• Neoseiulus californicus

  transparent white colour. In many cases the colour of the food ingested shines through the skin and shows up as an X-shaped marking on the back. If the food supply [...] persimilis in the complete absence of food, remaining in the crop to await the arrival of new prey. Life cycle of Neoseiulus californicus The developmental [...] available in breeding sachets ( Spical-Plus , Spical Ulti-Mite ). In this case the predatory mites multiply in the sachet and disperse into the crop over

• Tobacco aphid

  crops in both the United States and South America. The tobacco aphid ( Myzus persicae subsp. nicotianae ) is also encountered in a range of crops in greenhouses [...] unsuitable for market. At the same time, photosynthesis in the leaves is reduced, affecting production. They are usually found in closely packed colonies [...] through the crop by walking. The tobacco aphid tends to form denser colonies, closer to the top of the plant, than the peach potato aphid. It is not known

• Plant Disease Management

  preventing the disease from spreading further. Crop rotation Crop rotation is a fundamental strategy, which means avoiding planting the same crop in the same [...] disease cycles and reduces the buildup of pathogens in the soil. Disease-resistant varieties Another vital aspect of prevention is the use of disease-resistant [...] diseased plant material is essential to prevent the spread of pathogens. This practice is particularly important in containing the spread of diseases within

• Neoseiulus cucumeris

  pollen, which is useful for instance in sweet pepper crops as the predatory mite can establish itself in the crop before the pest appears. The success of [...] hairs or in the axils of main and side veins. They are oval, white and have a diameter of approximately 0.14 mm. The larvae have six legs, are the same colour [...] Thripex-Plus ). In this case the predatory mites multiply in the sachet and disperse into the crop over a period of several weeks. Hang sachets in sheltered

• Peach

  nectarine. The peach belongs to the genus Prunus (just like the cherry, apricot, almond and plum) and the rose family. Together with the almond, the peach also [...] ‘persica’ refers to the popularity of the tree in Persia when it was introduced there. The tree’s fruit is usually sweet and juicy and it is called peach or [...] About The so-called Prunus persica is a deciduous tree indigenous to Northwest China. There is was first domesticated and cultivated for its fruit. The

• Strawberry

  means that the fleshy, edible part of the fruit does not develop from the plant’s ovaries, but from the receptacle that holds these same ovaries. The so-called [...] strawberry is a well-known hybrid species of the genus Fragaria (collectively referred to as the strawberries). Technically speaking, the strawberry is a so-called [...] so-called ‘seeds’ (achenes) that are visible on the strawberry’s skin, are in reality the ovaries of the flower with a seed inside.

• Fusarium spp.

  This species is the only Fusarium that actually grows inside the vascular system of the host plant and spreads upwards inside the plants. The other species [...] upwards. At the same time, the plant produces gum as a defence mechanism to stop the fungus from spreading. This gum blocks the xylem and causes the wilting [...] wilting which is the main symptom of this Fusarium species. Higher up in the plant, the microconidia germinate and infect the surrounding tissue. On infected

• Aphids

  and rendering them unmarketable. At the same time, photosynthesis in the leaves is reduced, affecting production. The aphid’s saliva can induce strong ‘allergic’ [...] individuals. Potato virus Y (PVY) is transmitted by aphids in tomato in this way, as is the cucumber mosaic virus (CMV) in cucumber. How to prevent aphids To prevent [...] times before becoming adult, with the conspicuous white cuticles, shed during each of these moults, betraying their presence in the crop. There are two types