Crazy roots, hairy roots, crown gall

Furthermore, infection is characterized by excessive root growth (crazy roots). In greenhouse vegetables, the roots overgrow the substrate and in severe epidemics [...] Rhizobium. Rhizobium rhizogenes or Rhizobium radiobacter causes crazy roots, hairy roots and crown gall. Damage symptoms The four pathogenic Rhizobium species [...] excessive vegetative growth occurs. Life cycle and appearance of Crazy roots, hairy roots, crown gall The primary source of infection by Rhizobium rhizogenes

Black root rot of cucurbits

around the point of attachment of lateral roots and root hairs. The lesions may grow and encircle the root. The roots become yellow-brown to black and ultimately [...] causing black root rot of cucurbits. Damage symptoms Phomopsis sclerotioides causes grey-black spots with a dark demarcation line on cucumber roots. The lesions [...] stripes. The disease is usually restricted to a few of the roots but in severe cases all roots may be infected. At the final stage of the disease, only vascular

Fit Roots for Plant Health

Root and crown rot of strawberry

or brown necrotic areas in crown and root of strawberry. Plant development is slow, growth is retarded and rooting is poor. Transplants look weak and may [...] strawberry have been ascribed to Pestalotiopsis clavispora in the case of root and crown rot (of strawberry), first found in The Netherlands, and Pestalotiopsis [...] Pestalotiopsis clavispora and Phytophthora cactorum. Life cycle and appearance of Root and crown rot of strawberry Not much is known about the life cycle. The fungus

The Trianum and Vidi Parva Foundation

Roots Growers positive about Mycotal against whitefly

effective chemical products that slot neatly into a biological control system. Roots Growers, producer of mini vine cherry tomatoes, gained experience with Koppert’s [...] van der Knaap, who is responsible for cultivation and plant protection at Roots Growers’ Honselersdijk site in the Netherlands. Located along Zwethlaan, [...] site, located in Zevenhuizen, covers 11 hectares. As organic as possible Roots Growers grows the Piccolo variety, a mini vine cherry tomato. In this segment

Damping-off

the growing roots of young plants and move towards them through the soil water. They infect the roots through small wounds, where the side roots are formed [...] ly. In potted plants the flower buds fall off. The side roots rot and very little of the root system survives. On the border between air and soil or substrate [...] damage is more extensive in young crops. Damage symptoms Pythium affects roots, in particular those of seedlings. Infected plants lag in growth. Seedlings

Cottony soft rot

cottony soft root, is a plant pathogenic fungus. It has a very wide range of host plants. Damage symptoms The first symptoms of a cottony soft root ( Sclerotinia [...] and pods. Root infection often leads to premature wilting and death of plants. Life cycle and appearance of Cottony soft rot Cottony soft root ( Sclerotinia [...] bodies) containing ascospores. The mycelium infects the stem base and the roots, whereas the ascospores infect the above-ground plant parts. In greenhouses

Fusarium wilt

place as infection of the roots at the root tip or in small wounds, for example where lateral roots branch off from the tap root. How to prevent Fusarium [...] stressed host plants. Damage symptoms Fusarium fungi cause vascular wilt, root rot, foot and stem rot, leaf lesions, fruit rot, head blight in cereals and

Horiver Disc

Use Horiver Disc for trapping root aphids and fungus gnats. Pests Root aphids , fungus gnats . Mode of action Insect pests are attracted to the colour