Black sigatoka disease

old. The symptoms run parallel to the veins. Within a few days, the spots become a few centimetres in size and turn brown with light grey centres. These [...] ultimately dies. In cases of severe infection leaves may die within a few weeks. Because of the lack of leaf tissues, fruit maturity is hampered. Life cycle [...] General Mycosphaerella fijiensis also known as black sigatoka, is an ascomycete fungus that causes leaf-spot of banana. Damage symptoms Black sigatoka

Loose smut of wheat

smut of wheat General Ustilago nuda f.sp. tritici is a basidiomyceteous fungus that affects wheat. It is also known as loose wheat smut, or loose smut of [...] emergence. The first sign of infection is the appearance of a smutted ear. Instead of normal tissue, the ear contains a mass of olive-brown smut spores. Solution [...] within a day and infect the inner tissues of the newly infected seed. During maturation of the seed, the mycelium becomes thick-walled and swollen as a dormant

Apple scab

overwinters in the form of unripe fruiting bodies in infected fallen leaves or in lesions on twigs. These unripe fruiting bodies, or pseudothecia ripen in winter [...] parts and spore production. In autumn, the fungus produces new pseudothecia in leaves that have already fallen off the trees. In response to the infection [...] mechanism is to produce corky rings around the lesions to prevent further invasion of tissue by the fungus. Late fruit infection only results in small dark

Swirski-Mite

are detected in the crop. Introduction rates typically range from 25-300 per m2/release. Releases should be repeated if necessary. Consult a Koppert advisor [...] or a recognized distributor of Koppert products for advice on the best strategy for your situation. Environmental conditions Amblyseius swirskii is most [...] 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 60%

Anthurium

anthurium is a flowering, perennial plant and has beautiful, long lasting flowers that come in a variety of colours. However, the ‘flower’ is actually an [...] are recognized by its uniform colours and heart-shaped spathes. In many markets, red is the most popular colour. Other types include the obake anthuriums [...] which are larger than the standard ones and their spathe has a more prolonged shape that comes in two or more colours.

Avocado

named ‘alligator pear’ is a tree originating in South Central Mexico. Its nick name points to its fruit which is botanically speaking a large berry with only [...] 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 [...] Lauraceae . Commercially speaking, avocados are very valuable and the fruit is produced in tropical and Mediterranean regions. Avocados ripen only after they are

Verticillium wilt

are pale-green, then orange-yellow. In the beginning the plant seems to recover at night. The symptoms may occur only in parts of the plant. Cutting the stalk [...] system usually stays mostly intact. In rose, branches die off from the top and purple brown stripes occur on the stem. In tomato, sometimes V-shaped lesions [...] transported upwards with the transpiration stream. As a defence mechanism, the plant produces gum in the vessels. The presence of both the fungus and the

Papaya

cultivated in Mexico, it is now grown in most tropical regions around the world. The papaya fruit is 15-45 cm in length and between 10-30 cm in diameter [...] About A tropical fruit that is called papaya, papaw or pawpaw in different countries, is the fruit of the Carica papaya tree of the family Caricaceae. [...] diameter. Its soft skin is an amber to orange colour.

Tea

lasiocalyx (Indo China or cambod type). Tea is a dried leaf of a bush and contains theine. Tea beverage produced in freshly boiled water having leaves and leaf [...] . Tea plant is an economically important plantation crop extensively cultivated in the hills of North-eastern and Southern states. Tea is native of China [...] China. Tea bush is sub-tropical and tropical plant grows well in hot and humid climate. The ideal temperature for growth is 20-30 0 C. It requires well

Guava

common tropical fruit is cultivated in many tropical and subtropical regions. A vivid yellow or green on the outside, Psidium guaiava, is the fruit of the Myrtle [...] Myrtle family (Myrtaceae) – a smallish tree. The pulp varies from off-white to bright pink, and is between 4 to 12 cm in length. The taste ranges from