• Buckthorn-potato aphid

  Life cycle and appearance of Buckthorn-potato aphid Aphids have a complex life cycle, with both winged and wingless forms of adults and a great variety [...] nasturtii , has a nearly cosmopolitan distribution and is a major pest of potatoes, where it also transmits viruses. It also attacks a large number of [...] buckthorn- potato aphid are 1.1-2.4 mm long and bright pale green to yellowish green. The antenna are relatively short and barely exceed half the body length

• Dwarf bunt

  General Tilletia controversa is a plant pathogen. It is a fungus known to cause the smut disease TCK smut in soft white and hard red winter wheats, as well [...] reach a fraction of their normal height. Spikes are generally broader and the glumes opened wider, than in plants infected with Tilletia tritici and Tilletia [...] plant cells and eventually grow inside the kernels. When that happens, the fungal mycelium turns into teliospores and the whole kernel becomes a bunt ball

• Macrolophus pygmaeus

  tomato, and gerbera. Conditions that promote the onset of such problems include a shortage of prey, a high population of bugs (more than 100-150 per plant) [...] nymphal instars and the adult insect. Adult females are 3.0-3.6 mm long and the males between 2.9-3.1 mm. They are slender with long legs and antennae. The [...] antennal segment is black, and a black stripe runs behind the eyes. The first part of the forewings is a transparent, soft green with a small black spot in the

• Circular scale

  ns it may spread to fruits, stems and trunks, and may cause yellowing of leaves, premature leaf and fruit drop, and stem dieback. First signs of an infestation [...] beneath is yellow and up to 1.7 mm long. The adult male is 0.7 mm long and has a single pair of wings. First-instar nymphs are 0.3 mm long and have legs, but [...] scale Female nymphs and adults have flat to moderately convex, circular scales up to 2 mm in diameter with a slightly raised, sub-central point which is

• Cabbage moth

  are light brown with a rather inconspicuous spot in the middle. Head and thorax are grey-brown with white spots, and the abdomen is a pale, greyish brown [...] brown-black or sometimes even a purple colour. They are ridged and have a light network of markings. First instar larvae of the cabbage moth (Mamestra brassicae) [...] segments gives them a characteristic ringed appearance. Pupation takes place in the ground. The pupae are approximately 2 cm long and a glossy brown colour

• Early blight

  ). Prevent damage during harvest (in potato and carrot). Post-harvest storage at 0-1 o C. A. brassicae and A. brassicicola : adjust the sowing date to avoid [...] Alternaria species is the asexual stage. Conidia and mycelium overwinter in the soil and on crop residues and cause primary infection of the leaves. Survival [...] potato and early blight of tomato, which presents itself as spots on leaves, petals and stems. These spots can be distinguished by the dark and brown

• Thrips

  larval instars, a pre-pupa and a pupal instar, and finally the adult insect. The eggs are kidney-shaped and have a white or yellow shell. Before a female deposits [...] greenhouse and field crops. Their feeding and virus transmission cause leaf deformation, silvering and fruit damage, leading to reduced yield and marketability [...] larvae Thrips larvae are usually pale or transparent in color and have a similar shape to the adults but are smaller and lack wings. One of the most distinctive

• Oleander aphid

  also called the milkweed aphid, is a common pest of several important ornamental plants in the families Apocynaceae and Asclepiadaceae. It is commonly found [...] found feeding on oleander and milkweeds ( Asclepias sp.). The oleander aphid is cosmopolitan, and can be found in tropical to warm temperate regions throughout [...] Life cycle and appearance of Oleander aphid The oleander aphid is an obligate parthenogenetic species; thus the adult aphids are all female and males do

• Black tea thrips

  long and males are 1.1-1.2 mm long. The legs are entirely white or yellow. The greenhouse thrips is parthenogenic, it reproduces without mating, and males [...] lower surface first and, as feeding progresses and the population increases, moves to the upper surface. The leaves become discoloured and become distorted [...] The adults are poor fliers and tend to remain in the shaded areas on the plant. The eggs are white and banana-shaped and are inserted singly in plant

• Plugging the plant propagation gap with Trianum

  July 5, 2019

  Pythium , Rhizoctonia and Fusarium Trianum-P is mixed with water and applied as a drench to propagation trays at a rate of 1.5 g/m 2 Trianum-G is incorporated [...] the growing medium, and the second is a powdered formulation which is applied to ornamental plants as a drench, through trickle tape, or via drip lines. Provides [...] growing conditions over a wide temperature and pH range (10-34 o C and pH 4-8.5) Gives protection to cuttings, seedlings and plug plants in propagation;