• Fusarium wilt

  or takes place as infection of the roots at the root tip or in small wounds, for example where lateral roots branch off from the tap root. How to prevent [...] 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 [...] plantations may die and the soil may not be suitable for planting for many years to come. Life cycle and appearance of Fusarium wilt Fusarium oxysporum has many

• Rice

  annual plant. In tropical climates however, it can be grown as a perennial and can produce a ratoon crop for as long as 30 years. The edible seeds of the plant [...] rice). Rice is a serial grain and the most popular staple food for a large part of the world population, especially in Asia. Rice is a monocotyledon and [...] plant (caryopsis) are usually between 5-12 mm (0.20–0.47 in) long and 2–3 mm (0.079–0.118 in) thick.

• Green peach aphid

  may originate from Asia, where its winter-hardy host plant, the peach tree, is native, however it is now a pest with a world-wide distribution. The green [...] glossy. Winged individuals have a brown-black head and thorax and a yellow-green to green or even reddish abdomen. They have a dark brown spot on the abdomen [...] Plant sap is rich in sugars, but has a low protein content. Aphids therefore need to extract large quantities of sap to get sufficient protein. The excess

• Downy mildew of rose

  plants like blackberry. How to prevent Downy mildew Choose resistant cultivars Use a wide crop rotation with non-host crops Prevent a humid microclimate. Achieve [...] which the pathogen can take up nutrients from the living plant cells. The pathogens continue to grow inside the leaves and after a while new spore-bearing [...] plant to fall over. In cabbage the stem is also infected in severe epidemics. In blackberry, red stripes may occur on the stems and petioles due to systemic

• Citrus mealybug

  females and as soon as a male emerges from its cocoon, it goes in search of a female. A fertilized female lays several hundreds of eggs in an elongated [...] development. After the second instar, a male nymph forms a dark brown ‘prepupa’ from which a pupa rapidly develops, inside a white cottony cocoon. Females undergo [...] through a second and third instar after which they become sexually mature. Soon after becoming an adult the females start to release a sex pheromone to attract

• Cucumber

  cucumber plant has large leaves and it produces an elongated, cylindrical fruit that may become as long as 60 cm or 24 inches long and 10 cm or 3.9 inches in diameter [...] About The cucumber ( Cucumis sativus ) is a popular, extensively cultivated plant that belongs to the gourd family of Cucurbitaceae . The cucumber originates [...] cultivation history goes back some 3000 years and it is now being produced on most continents. The cucumber plant is a creeping vine that grows up trellises or

• Fusarium spp.

  best-known. The mycotoxins are toxic to mammals so maximum levels have been determined. Fusarium sambucinum (a.k.a. F. sulphureum ) causes dry rot of potato [...] Fusarium spp. is a group of soil-borne fungi with many different species. Fusarium is widespread and can infect a range of host crops. Many species are [...] pink sporulation becomes visible. Fusarium solani is a complex of many species, who collectively have a very broad host range. F. solani causes foot and/or

• Botrytis

  fuckeliana / Botrytis cinerea) is considered a weak pathogen, only infecting weakened or damaged plants. How to prevent Grey mould Make sure the crop grows [...] Remove diseased plants or plant parts in a closed plastic bag In tomato: prune with a knife and not by hand, to avoid rugged, irregular wound surfaces In [...] then provide a large amount of inoculum Extra Silicon and/or Calcium nutrition hardens the cell walls and makes it harder for the fungi to enter the leaves

• Thripex

  gently before use Bottle: Push the centre of the cap to open the dosage hole Bucket: Use a spoon to distribute Thripex Sprinkle material on leaves or put [...] 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 [...] between 15 and 25°C (59 and 77°F). It is not effective at temperatures above 30°C/86°F. Neoseiulus cucumeris is sensitive to relative humidity below 70%. Combined

• Cotton leafworm

  green with a 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 [...] littoralis) can lay up to 3,000 eggs. Each egg is roughly spherical, about 0.6 mm long and whitish yellow. They are laid in clusters of 20 to 500 pieces on lower [...] Before pupation, caterpillars crawl to the ground and settle in the surface layers. The pupa is 15 to 20 mm long and reddish brown in colour. The forewings