Blight of pepper

drop off. Life cycle and appearance of Blight of pepper Phytophthora species are very destructive organisms belonging to the Oomycetes and are therefore strictly [...] flagellae, which enable them to move through water. Infection is usually from the root to the foot, but direct infection of the foot also occurs. Exudates [...] rapidly when the water content of the soil or substrate is higher than normal or optimal for crop growth. How to prevent Blight of pepper Apply hygiene measures

Downy mildew of Cucurbits

On the underside of the leave fluffy growth appears which is first white and later turns grey-brown. This is actually the sporulation of the pathogens extruding [...] stomata. Life cycle and appearance of Downy mildew Pathogens causing downy mildew are not fungi but Oomycetes and related to Pythium and Phytophthora. They [...] most downy mildews, the optimum temperature is around 15 o C and the closer the temperature is to this, the shorter the leaf wetness period that is required

Black rot of carrots

infection and this may lead to death of seedlings. From the primary infection of leaves, this type of carrot disease can spread to the flowers (especially [...] cause primary infection of the leaves. Survival can be several years, in the case of black rot of carrots ( Alternaria radicina ) up to 8 years. Damage symptoms [...] appearance of Black rot of carrots Black rot of carrots ( Alternaria radicina ) is a seed-transferred carrot disease. The seeds are the main source of primary

Tea spider mite

areas of India causing considerable yield loss. Damage symptoms Larvae, nymphs and adults causes damage to the tea plant which sucks the sap of leaves [...] surface of the mature leaves. Infestation starts all along the veins and midrib and gradually spreads to entire leaf. Youngs leaves are also equally affected [...] photosynthetic activity of leaves, subsequently leaves wilt and defoliation occurs due to increased transpiration and moisture loss. Absence of shade, high temperature

Two-spotted spider mite

urticae ) is a pest of many crops throughout the world. Despite their small size, they are capable of very rapidly doing severe damage, due to their great r [...] die. In tomatoes and cucumbers, as little as 30% damage of the leaf surface can lead to loss of the crop. The nymphs and adults also produce webs, and plants [...] leaves affects the appearance of the crop. This is of particular concern in ornamental crops. Life cycle and appearance of Spider mite Two-spotted spider

Cryptolaemus montrouzieri

larvae appear to prey on all stages of mealybugs equally. Adult ladybirds are good fliers and can disperse over a large area in search of prey. Although [...] populations of mealybugs. Once the supply of mealybugs becomes inadequate, the ladybirds fly off in search of new prey. Sometimes the larvae resort to cannibalism [...] cannibalism under these conditions. At a temperature of 21°C, during the whole period of its development to adult beetle, a larva eats more than 25 second and

Grape powdery mildew

and proper pruning after shedding of leaves. Spray Veni GoKlean at the rate 1.25 to 1.5 ml per litre of water at 12-15 days intervals as preventative spray [...] coloured. Shredding of flowers and poor fruit set due to floral infections. Early infected berries become malformed, cracking of skin of berries, shred and [...] All the above ground plant parts are susceptible to infection. Powdery growth on both the surface of the leaves. Affected leaves becomes malformed and

Cercospora leaf spot

GoKlean at the rate 1.25 to 1.5 ml per litre of water at 12-15 days intervals as preventative spray and or after recognition of the disease symptoms. Symptoms [...] greyish brown, circular with small to large grey centres and dark brown margins. The spots may enlarge to 1 cm to more and later coalesce. The spots dry [...] many species of Cercospora species depending on the plant type infected. Infected seeds, infected plants and plant debris are primary source of infection

Diglyphus isaea

feeding rate and efficacy can vary with the density of leafminer infestations, allowing it to adapt to changing pest pressures. Adult Diglyphus isaea does [...] How to use Diglyphus isaea The parasitic wasp Diglyphus isaea is available in a bottle ( Miglyphus ). Release parasitic wasps between the leaves of the [...] evening The dosage of the parasitic wasp Diglyphus isaea depends on climate, crop and leaf miner density and should always be adjusted to the particular situation

Leaf stripe

temperatures above 15 °C. How to prevent Leaf stripe Produce seed in semi-arid environments without irrigation, to decrease the chances of infection Use clean [...] the base of the leaf and the leaf sheath. They gradually extend and become brown and chlorotic and may merge. Eventually this leads to the death of the leaf [...] stunted and heads may be distorted and failing to emerge from the sheath. Ear length and the number of kernels may be reduced and kernels may be brown