• Pear

  sub family of Pomoideae , together with the apple and quince. The genus Pyrus consists of around 22 species, which are grown in Asia, Europe and northern [...] Pyrus communis ) is a pear species that originates in central and eastern Europe and southwest Asia. The pear tree belongs to the family of Rosaceae and sub [...] or common pear is a perennial, deciduous tree and cultivated for its fruit. The tree grows small, white flowers (about 2.5 cm or 1 inch in diameter) and

• Angular leaf spot

  also introduced in a crop in new transplants. This bacterium is very resistant to desiccation and can survive well in dry leaves or leaves in the soil, but [...] appearance of Angular leaf spot Xanthomonas fragariae overwinters in plants and dead leaves, that become the primary source of infection in the spring [...] nights, in combination with high humidity or presence of water. These conditions occur mostly in the spring if it rains or when sprinkler irrigation is used

• Beet armyworm

  vegetation during the summer. It is highly polyphagous, feeding on plants of more than 20 families. It is a serious pest in greenhouses, where it feeds on [...] potted plants. In both the greenhouse and the field, it is a major pest of sweet pepper. Damage symptoms Older caterpillars migrate to the top of the plant [...] armyworm (Spodoptera exigua) lays its eggs in packets, sometimes in several layers, and on top of a mass of white, cottony hairs and scales from the moth’s

• Citrus mealybug

  effect is a reduction of photosynthesis and therefore the yield. Flowers and fruit often drop off. Plant sap is rich in sugars, but low in proteins. In order [...] an adequate intake of protein, mealybugs must therefore ingest large quantities of sap, getting rid of the excess sugars in the form of honeydew. Charac [...] reduced level of photosynthesis in the leaves also reduces flower and fruit production. In ornamental crops, the mere presence of mealybugs is sufficient

• Tobacco whitefly

  the population is very large, feeding on plant sap can affect the physiology of the plant, as a result of which growth is retarded. In full sunlight, leaves [...] n. Bemisia tabaci is known for the transmission of viruses, including TYLCV in tomato. The consumption of plant sap and secreting of honeydew by whiteflies [...] identified on tobacco in Greece in 1889, hence the name tabaci . It has subsequently been found in most tropical and subtropical countries of the world. The original

• Gummy stem blight

  tools and hands of workers. The ascospores are the main source of dispersal of disease upwards in the crop and the conidia for spread of the disease downwards [...] may occur. In cucumber, the most important symptom is internal fruit rot, which can only be recognized from the outside by the small narrowing of the tip [...] the leaves Pick flowers within two days after opening in areas suspected of disease (only feasible in high-wire crops) Pick and remove dead and diseased leaves

• Tea mosquito bug

  appendages. The life cycle is completed in 15 to 20 days in summer and 45 to 60 days in winter. It has several generations per year and in extreme winter the adults [...] stages which suck the sap from young leaves, tender stems and buds. The toxic saliva of the insect is injected to the plant tissues at the time of feeding [...] appearance Adult is slender 6 - 8mm long, black colour with red thorax, black and white abdomen and greenish brown wings. Females is capable of laying about

• 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 [...] spadix. Standard varieties of anthuriums are recognized by its uniform colours and heart-shaped spathes. In many markets, red is the most popular colour. [...] 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. Recommended

• Fusarium head blight or scab

  General Fusarium is a group of soil-borne fungi with many different species. Fusarium is widespread and can infect a range of host crops. Many species [...] ascospores. In general, most Fusarium specieshave a similar life cycle. Fusarium overwinters for many years in the soil and on crop residues of infected plants [...] Survival is also possible on seed, greenhouse structures, tools and machinery. Primary infection is either seed-borne or takes place as infection of the roots

• Brown root rot, corky root rot

  survives in the soil and in buried tomato roots as microsclerotia. The microsclerotia germinate and produce mycelium that in turn infect the roots of tomato [...] poorly looking plants in localized areas of the greenhouse or field. The affected plants may wilt. Also, interveinal chlorosis of leaves and premature [...] bands on the roots with lengthwise cracks. No discoloration is present in the xylem tissues which distinguishes it from wilts caused by Verticillium or Fusarium