• Black sigatoka disease

  three days under optimal conditions (humidity close to saturation and temperature above 20 °C). How to prevent Black sigatoka disease Use resistant cultivars [...] them, so the spores cannot be discharged from the lower leaves in the stack Use under-canopy (drip) irrigation to reduce splash dispersal Lower the humidity [...] spots or streaks on leaves of about one month old. The symptoms run parallel to the veins. Within a few days, the spots become a few centimetres in size and

• Cotton leafworm

  covers the eggs with brownish-yellow hairs from her abdomen to make them less conspicuous and to protect them from desiccation. The cotton leafworm (Spodoptera [...] brownish head. In the last larval stage, they are 35 to 45 mm long. Coloration varies from grey to reddish or yellowish, with a median dorsal line bordered [...] results in shedding or drying up of the buds. Yellowish to dark-green larval excrement protrudes from the holes they have produced. On tobacco, the stem base

• Mango

  Mangoes are indigenous to South Asia and from this area the ‘common mango’ or ‘Indian mango’, Mangifera indica , found its way to the rest of the world [...] trees grow up to 35-40 meters (115-131 feet) tall and its crown can expand to 10 metres (33 feet) wide. The trees can grow really old and from some species [...] About Mango is a stone fruit (drupe) that grows from various species of tropical trees that belong to the flowering plant genus Mangifera and the cashew

• Obscure mealybug

  seeking females to fertilize. The female second instar nymphs, on the other hand, settle on the leaf and begin to secrete wax, moulting to a third instar [...] originates from South America, but can now be found in many parts of the world with a temperate climate. It has a very similar appearance to the citrus [...] appearance of Obscure mealybug Mealybugs get their name from the fact that the body of the females from the third nymphal instar onwards are covered with a

• Angular leaf spot

  as dead leaves In field-grown tomato and pepper, rotate fields to prevent infection from volunteer plants and crop debris Avoid waste piles in the vicinity [...] causes small, water-soaked lesions on the underside of the leaf. They enlarge to angular spots, often limited by the small veins. The distinctive feature is [...] bacterial exudate forms on the underside of the leaf. This exudate changes to a white film when it dries. Lesions may merge as they grow and later also

• Banana

  Musa spp.) is a nutritious fruit that grows from various large, herbaceaous flowering plants belonging to the genus Musa . Botanically speaking the fruit [...] its skin (usually easy to peel) can be green or yellow, or red, purple or brown when ripe. Bananas grow in bunches downwards from the top of the plant. [...] derive from only two different, wild species; Musa acuminata and Musa balbisiana . Bananas used for cooking are also called plantains, contrast to dessert

• Air blowers to distribute and apply beneficials

  natural enemies.The airflow from the fan guarantees the even distribution of this material up to a distance of 3-5 metres from the Airbug. Mini-Airbug The [...] natural enemies. The airflow from the fan guarantees the even distribution of this material up to a distance of 10-12 metres from the Airobug. Airbug The Airbug [...] cultivations. The air flow from the fan guarantees the even distribution of this material up to a distance of 2-3 metres from the Mini-Airbug. More information

• Cotton aphid

  (up to 1.8 mm long) are usually dark green to black, while aphids produced in overcrowded colonies at a high temperature can be much smaller (from 0.9 [...] extract nutrients from the plant and disturb the balance of growth hormones. As a result, the plant’s growth is retarded giving rise to deformed leaves or [...] sugars, but has a low protein content. Aphids therefore need to extract large quantities of sap to get sufficient protein. The excess sugar is secreted in the

• Citrus mealybug

  and can be hard to spot. They are smaller than the females, have two pairs of wings and two long tail filaments. Their sole task is to fertilize the females [...] sexually mature. Soon after becoming an adult the females start to release a sex pheromone to attract males. Males generally fly only in the early morning [...] on the aerial parts of the plant, some species extract their nourishment from roots, whilst others are gall-formers. A few species can also transmit harmful

• Carrot

  colours, ranging from the regular orange to black and purple, but also red, yellow and white. The carrots which are produced nowadays derive from the wild carrot [...] carrot, Daucus carota , indigenous to Europe and southwestern Asia. The carrot plant presumably comes from Persia and was originally produced for its seeds [...] and fertile soil. Recommended for you Meet Capirel! An effective addition to your arsenal in the fight against thrips! Healthy Soils, Healthy Crops with