Powdery mildew

meaning they feed on living plant cells and barely survive in the absence of a living crop. They survive as ascospores or perithecia, structures containing [...] mildew fungi and especially in greenhouse crops they don’t play a role in the epidemics. Fungal spores germinate on the leaf surface and the germ tubes [...] resistant cultivars whenever available Extra Silicon and/or Calcium nutrition hardens the cell walls and makes it harder for the fungi to enter the leaves

Tomato looper

capsule and a yellowish-green body with a clear yellow longitudinal stripe on either side, and several less conspicuous longitudinal stripes dorsally. [...] objects and on tomato fruit, often in a bunch of ripening tomatoes, however, it can also be found in the soil. The pupa has a pale green body, with a dark [...] The golden twin-spot moth or tomato looper ( Chrysodeixis chalcites ) belongs to the family of Noctuidae . It is a tropical and subtropical species originating

Knowing & recognizing

stics. Shop now Koppert - A knowledge company The use of biological control is not a simple process, it has become a complex system in which many aspects [...] edition of Knowing and recognizing also includes new biopesticides and biostimulants that increase the plant’s resilience to stress and help the plant to [...] crop protection Knowing and recognizing does exactly what it implies. It empowers you with knowledge about the pest’s lifecycle and its many phases, as well

Corn earworm

instars, over a total period of two to three weeks, developing a greyish colour and a black cephalic capsule in the first stage, but later adopting a variety [...] colour. The adults have a brown-coloured body, with a wingspan of 35 to 40 mm and a dark stripe on the side edge of the forewings and hindwings; they live [...] Life cycle and appearance of the corn earworm The eggs of corn earworm are a milky-white colour, which turn dark grey before hatching, and have a ribbed spherical

Bacterial canker of tomato

clothing and gloves, disinfect tools and greenhouse structures Use a crop rotation in field crops of at least two years and alternate with a non-host crop [...] on stems, leaves and fruits. Leaves and shoots wilt. On the lower leaves, blister-like white lesions occur, which later turn brown and may merge. The leaves [...] the name ring rot. Life cycle and appearance of Bacterial canker of tomato Clavibacter is seed-borne and tuber-borne and primary infection is mostly from

Beetles

of all insect orders and displays an enormous variety of form, size and habit. A number of species are a serious pest in crops or stored products. There [...] damage Both larvae and adults of beetles can cause damage to crops. The larvae of some species feed on growing tips and roots or chew and bore into stems [...] aphids . Beetles undergo a complete metamorphosis, that is, the larvae do not resemble the adult at all, and must pass through a pupal instar before reaching

Pea

vegetable is a bright green colour, sometimes yellow or purple and widely grown as a cool season vegetable crop. Immature peas are consumed as a vegetable [...] popular vegetable is a round seed in the seed pod of the fruit, Pisum sativum . Pods of this plant develop from the ovary of a pea flower and carry numerous [...] vegetable and often canned or frozen. Dry peas are shelled from matured pods. Recommended for you

Green peach aphid

grey-green, pink or red in colour. They appear matt, never glossy. Winged individuals have a brown-black head and thorax and a yellow-green to green or even reddish [...] aphid Life cycle and appearance of green peach aphid Aphids have a complex life cycle, with both winged and wingless forms of adults and a great variety in [...] native, however it is now a pest with a world-wide distribution. The green peach aphid ( Myzus persicae subsp. persicae ) is a particularly polyphagous

Lesser house fly

Depending on temperatures and environmental conditions, the maggots complete three larval stages and pupate (inside a puparium) in a week or more. Fannia puparia [...] represent a public health concern for the communities surrounding a farm. Life cycle and appearance of the Lesser house fly Lesser house flies and other Fannia [...] latrine fly and a whole host of other manure-breeding flies . Fannia species can be found worldwide, from the arctic to the temperate neotropics, and they typically

Crazy roots, hairy roots, crown gall

dispersed by rain and wind and by humans and tools. Until now, no bacteria have been isolated from crazy roots. This disease seems to be caused by a change in [...] from the Rhizobium infection. Rhizobium rhizogenes puts a Ri-plasmid in the plant tissue and causes a genetic change in the plant. How to prevent Crazy roots [...] known as Agrobacterium tumefaciens or Agrobacterium radiobacter, Agrobacterium vitis, Agrobacterium rhizogenes and Agrobacterium rubi, n ow the first part