Root rot of carrot

black, while the cotyledons remain green. During humid spells the surviving plants exhibit by necrotic leaf spots Life cycle and appearance of Root rot of [...] annual crops. As far as is known, Daucus carota (carrot) is the only host plant of the fungus. How to prevent root rot of carrot Studies have shown that [...] signal transduction in host-pathogen interactions. Presence of umbelliferous plants: Inoculum can survive in perennial (umbelliferous) weeds or alternate hosts

Long-tailed mealybug

but these days it is widespread throughout the world. The range of host plants of Pseudococcus longispinus is less extensive than that of the citrus mealy [...] on the crop in various ways: Nymphs and females extract the sap from the plant, stunting growth and causing deformation and / or yellowing of leaves, sometimes [...] photosynthesis and therefore the yield. Flowers and fruit often drop off. Plant sap is rich in sugars, but low in proteins. In order to gain an adequate

Glasshouse potato aphid

substance, which leads to deformations in the growing tip of the plant. Precisely where the plant is pierced is unimportant. The piercing of the lower leaves [...] young aphids are born as developed nymphs. They immediately start to feed on plant sap and grow rapidly. When reproduction is sexual, the aphids lay eggs that [...] alternation of hosts, and the two types of life cycles occur on the same host plant. The aphid can overwinter not only in greenhouses, but also outdoors in sheltered

Trianum-G

Trianum-G protects plants against a range of soil-borne root diseases through several different modes of action. It also improves root system development [...] development, nutrient uptake and plant growth. Diseases Trichoderma harzianum T-22 protects against soil-borne diseases such as Pythium spp., Rhizoctonia spp. [...] Sclerotinia spp. and Microdochium spp. In addition, Trianum-G promotes plant growth and uniformity. Crops Trianum-G can be used in most crops. Mode of

Southern European marshland pyralid

wide range of hosts from 38 plant families. They include ornamental crop plants, such as roses and gerbera, aquatic plants, vegetable crops such as celery [...] sometimes attacking the stem of the plant as well as the leaves. Late instar larvae burrow into soft woody or herbaceous plant stems causing withering or drying

Cabbage looper

voracious appetite and can daily consume up to three times their body weight. Plants can be severely defoliated and stunted. Life cycle and appearance of Tr [...] can deposit up to 300 eggs on the underside margins of the upper leaves of plants. The eggs have a spherical shape, with the flattened part attached to the [...] Pupation takes place in webbed cocoons often on the underside of the host plants. The pupae have a green colour and then change to a coffee brown colour

Beet armyworm

polyphagous, feeding on plants of more than 20 families. It is a serious pest in greenhouses, where it feeds on ornamental plants such as chrysanthemum, [...] gerbera, roses and potted plants. In both the greenhouse and the field, it is a major pest of sweet pepper. Damage symptoms Older caterpillars migrate [...] migrate to the top of the plant where they feed mainly on the growing tips. They produce large holes in the leaf, sometimes stripping the leaf down to the mid-rib

Gerbera

The gerbera belongs to the family of daisies or Asteraceae . The flowering plant is originally from South Africa and grew among others in the Cape Province [...] the gerbera is still popular and extensively used as a decorative garden plant or sold as cut flower. Domesticated cultivars are usually the result of crossing

Maize

About Maize or corn ( Zea mays subsp. mays ), is a large grain plant that divided in six main types: flint corn, dent corn, popcorn, pod corn, sweet corn [...] in the preparation of Mexican food dishes. The leafy stalk of the maize plant produces separate pollen and ovuliferous inflorescences, also specified as

Grapes

About The common grape vine ( Vitis vinifera ) is a species of Vitis . The plant comes originally from the Mediterranean region, central Europe and southwestern [...] and Portugal, southern Germany and Iran. The grape is the fruit of this plant and is actually a berry. Grapes are consumed fresh and they are processed