• Fall Armyworm

  January 1, 1970

  symptoms The developing larvae eat different parts of the host plant, depending on the crop, the stage of crop development, and the age of the larvae. On maize [...] distinct white inverted Y-shaped mark on the front of the head and four large spots on the upper surface of the last segment. Pupae are reddish brown and [...] pinkish or light green and spherical, and are usually laid on the underside of the leaves. The larvae ( caterpillars ) are 30-40 mm long. They have six instars

• Greenhouse whitefly

  January 1, 1970

  This is called the pupa stadium and these pupae are found on the oldest leaves. The adult emerges from the pupa via a T-shaped fissure. The adult whiteflies [...] sucking out the sap from the plant leaves and secreting honeydew. This can have the following consequences: If the population is very large, feeding on plant [...] influence the development of fruit and lead to a reduction in yield. The honeydew deposited on fruit makes it sticky. Dirt adheres to the fruit, and the growth

• Pear

  January 1, 1970

  Asia. The pear tree belongs to the family of Rosaceae and sub family of Pomoideae , together with the apple and quince. The genus Pyrus consists of around [...] Europe and northern Africa. The European or common pear is a perennial, deciduous tree and cultivated for its fruit. The tree grows small, white flowers [...] About The so-called European pear or common pear ( Pyrus communis ) is a pear species that originates in central and eastern Europe and southwest Asia

• Pherodis

  January 1, 1970

  to other areas Application Place the dispenser in the trap and place the trap in the right position as indicated for the particular trap Wash your hands [...] insect trap, the type of trap depends on the species to be monitored. The species-specific sex pheromone lures males of the target pest into the trap. Trapping [...] dispenser. Preparation Collect the sachets containing the pheromone dispensers from the cold store and open the sachets Do not touch the dispenser, since manual

• Avocado

  January 1, 1970

  with only one seed. The berry is green-skinned and fleshy and its shape resembles a pear or (large) egg. The avocado tree belongs to the flowering plant family [...] About The avocado ( Persea americana ), also named ‘alligator pear’ is a tree originating in South Central Mexico. Its nick name points to its fruit which [...] family of Lauraceae . Commercially speaking, avocados are very valuable and the fruit is produced in tropical and Mediterranean regions. Avocados ripen only

• Tomato

  January 1, 1970

  About The tomato plant ( Solanum lycopersicum) belongs to the nightshade family of Solanaceae . The tomato is the edible fruit of this plant. The plant [...] a greenhouse) the stem often extends over the ground. Indeterminate tomato types are so-called ‘tender’ or ‘half-hardy’ perennials. The plants die every [...] plant is native to Central and South America and the tropical highlands. Tomato plants usually grow to a height of between 1-3 metres (or 3-10 feet). Their

• Charcoal rot

  January 1, 1970

  Cutting the roots may show the same discolouration of the internal tissues of the main roots. In most crops, necrotic lesions on the roots are the first [...] reported. The density of the microsclerotia in the soil is directly related to disease incidence. Within 24 hours the fungus infects the roots of the host by [...] germ tubes. During the next two days, necrotic spots occur on the roots and the fungus spreads into the cortex and vascular tissue. In the infected host tissues

• Grapes

  January 1, 1970

  to the production of wine, but also table grapes. Still, cultivars of the Vitis vinifera are the basis of wine production around the world. All the usual [...] About The common grape vine ( Vitis vinifera ) is a species of Vitis . The plant comes originally from the Mediterranean region, central Europe and so [...] been cultivated in Morocco and Portugal, southern Germany and Iran. The grape is the fruit of this plant and is actually a berry. Grapes are consumed fresh

• Tobacco whitefly

  January 1, 1970

  wings of the adult are already clearly visible. These pupae are found on the oldest leaves. The adult emerges from the pupa via a T-shaped fissure. The adult [...] adult. The larvae are found on the underside of young leaves and have an oval shape. The first instar larvae (crawlers) are mobile, whereas the rest of [...] of the larvae stadia remain flattened on the leaf. The fourth larva stadium develops into a yellow, almost circular so called pupa, in which the red eyes

• Koppert One

  February 7, 2024

  app Understand the impact of pesticides on beneficial organisms and pollinators Pesticides can have both direct and indirect effects on natural enemies [...] regard to moulting, or a repellent effect. The data within this database serves as a valuable reference for integrating chemical pesticides with biological [...] strategies. Go to web app Ask the Digital Assistant Koppert One Side Effects offers two convenient ways to access information: use the app's standard search feature