• Cotton bollworm

  General The cotton bollworm ( Helicoverpa armigera ) occurs in the tropics and sub-tropics of all continents except for North America. Larvae of the cotton [...] instars the head is mottled, and the body is marked with three prominent longitudinal dark bands with numerous lighter coloured wavy lines. The colour of [...] and have a wingspan of about 40 mm. The grey-green males are smaller. The forewings are edged with a line of black spots, and the hindwings in both sexes

• Red palm weevil

  Due to the specific morphology of the palms, direct or indirect destruction of the apical bud will lead to the death of the plant, which makes the red palm [...] insect. Life cycle and appearance of Red palm weevil The adults of the red palm weevil ( Rhynchophorus ferrugineus ) are typical weevils: the head extends [...] with distribution through the Mediterranean since the 1980s. Damage symptoms It is very difficult to recognize the first signs of red palm weevil ( Rhynchophorus

• Tomato leafminer

  harvest. Life cycle and appearance of Tomato leafminer The female moth of the tomato leaf miner ( Tuta absoluta ) lays about 260 eggs. The eggs of the tomato [...] occur underneath the crown of the fruit and even inside the fruit itself. On leaves, the larvae only feed on mesophyll tissues, leaving the epidermis intact [...] mine inside the leaf, stem or fruit. In the second to fourth instars they become greenish with a black band behind the head. The prepupae of the tomato leaf

• Click beetles

  and feed on the roots of many plants. Damage symptoms The click beetles feed on the roots and bore into the base of plants. This can cause the plants to [...] Damage is more severe in young plants. Life cycle and appearance of Click beetles Adult Agriotis sp. are 6-10 mm long and yellowish brown to black. The eggs [...] fully grown the larvae pupate in the soil in summer. The adults appear about 4 weeks after pupation, but usually remain in the soil until the following spring

• Wheat bunt

  sporidia infect the wheat seedlings even before emergence and the fungi grow inside the plants to the growing tip. The fungi grow between the plant cells and [...] hence the common name stinking bunt. Life cycle and appearance of Wheat bunt Tilletia tritici and Tilletia laevis survive as teliospores in the soil or [...] heads. The glumes are opened either on some or on all spikelets, showing the bunt (smut spore) they contain, which is larger than a normal kernel. The bunt

• Apple collar rot

  irregular lesions occur. In strawberry, the heart leaves wilt first, then the whole plant. Life cycle and appearance of Apple collar rot Phytophthora species [...] from the root to the foot, but direct infection of the foot also occurs. Exudates leaking from growing root tips promote germination and attract the zoospores [...] water, since the zoospores can readily move through water. This explains why the disease spreads more rapidly when the water content of the soil or substrate

• Leafhoppers

  plant pathogens, increasing the risk of disease spread within greenhouse and field crops. Effective leafhopper control is therefore essential to maintain [...] Biological control of leafhoppers Leafhoppers are highly mobile, sap-sucking pests that feed on plant leaves, causing discoloration, stippling and leaf

• Verticillium wilt

  with the transpiration stream. As a defence mechanism, the plant produces gum in the vessels. The presence of both the fungus and the gum causes the xylem [...] recover at night. The symptoms may occur only in parts of the plant. Cutting the stalk horizontally reveals a slight discolouration of the vessels, brown [...] residues. The fungus infects the roots of plants, directly or through wounds caused by for example nematodes. The fungus then grows into the vessels of the plant

• New website for Koppert India

  June 16, 2020

  ons of the life cycles. The product page explains how the Koppert products work. Our popular videos of our beneficials show a detailed analysis of how [...] provide a clear overview of the pest or disease. The grower can easily identify the pest or disease through close-up photos, images of damage symptoms, videos [...] website for Koppert India Koppert India is proud to announce the launch of its local www.koppert.in website. As the family company has continued its international

• Leaf stripe

  appearance of Leaf stripe Pyrenophora graminea is monocyclic, which means there is only one disease cycle during the cropping season. The fungus is seed-borne [...] systemic infection is the only source of primary infection. The fungus spreads from the seed into the seedling. Conidia are produced on the infected leaves [...] from the sheath. Ear length and the number of kernels may be reduced and kernels may be brown. The symptoms do not always occur together. Life cycle and