Crazy roots, hairy roots, crown gall

roots, crown gall The primary source of infection by Rhizobium rhizogenes has not yet been defined. The assumption is that the bacteria survive in the soil [...] and on the crown. Furthermore, infection is characterized by excessive root growth (crazy roots). In greenhouse vegetables, the roots overgrow the substrate [...] n ow the first part of the name is changed to Rhizobium. Rhizobium rhizogenes or Rhizobium radiobacter causes crazy roots, hairy roots and crown gall.

RedStar places trust in Natutec Scout

seeing the trend. Is the level of whitefly infestation staying the same or is it going up or down? I want to see that at a glance. If there is an increasing [...] trust the improved version of the app. After all, the software no longer makes mistakes, while I or others still can. The app is very reliable, the chance [...] immediately tells you how the level of infestation is developing.’ At RedStar, Jan van Nieuwkerk is responsible for plant protection at the company's six locations

Pollination

improve the quality and shelf-life of these products. Pollination is the transfer of pollen from the anthers of the flower to the stigma of the flower. [...] If the pollen is transferred from anther to stigma on the same flower it is called self-pollination. Cross pollination, is the transfer of pollen from [...] ng to the success of crop production around the world. What is pollination? Pollination is an annual challenge for growers when it comes to the production

Black rot of carrots

rot of carrots General The only known stage in all Alternaria species is the asexual stage. Conidia and mycelium overwinter in the soil and on crop residues [...] radicina ) is a seed-transferred carrot disease. The seeds are the main source of primary infection and this may lead to death of seedlings. From the primary [...] spores surviving in the soil are the main source of infection. Especially wheat and barley reduce the number of surviving conidia in the soil. Use resistant

Better insights and digital advice with Natutec Scout

2019 and is very happy with how it works. ‘Scouting with the app is much faster thanks to the scanner’s digital image recognition and the link to the Koppert [...] Barry explains, ‘The map of our greenhouses, which is programmed into the app, allows us to see where an infestation is and how it is evolving. It also [...] bell – as soon as the level of infestation exceeds the threshold, it’s a signal to the grower that he needs to take action. This is how Barry Enthoven of

FAQs Nematodes

Only if the nematode is in the host and the temperature is not too low is there a small chance that the nematodes can overwinter. However, this is never [...] look for a host. The effect of treatment is thus strongly dependent on how quickly a nematode has found a host. Is the effect visible? Is the effect visible [...] there is any doubt, remove all filters. What pressure can be on the pump and the spray boom? What pressure can be on the pump and the spray boom? The pressure

Early blight

Early blight General The only known stage in all Alternaria species is the asexual stage. Conidia and mycelium overwinter in the soil and on crop residues [...] spores surviving in the soil are the main source of infection. Especially wheat and barley reduce the number of surviving conidia in the soil. Use resistant [...] From the primary infection of leaves, Alternaria solani can spread to the flowers (especially dangerous in crops for seed production) and to the crown

FAQ Nematodes

Only if the nematode is in the host and the temperature is not too low is there a small chance that the nematodes can overwinter. However, this is never [...] found. In practice, the decrease of pest pressure is the only indication that the application has been effective. How long do the nematodes work / can [...] than 0.3 mm. If there is any doubt, remove all filters. What pressure can be on the pump and the spray boom? The pressure on the nozzle may not exceed

Mottled arum aphid

green with black cross bands behind the head, broken along the midline, and a large horseshoe-shaped spot on the back of the abdomen. These black markings can [...] they shed white skin, betraying their presence in the crop. Reproduction of the mottled arum aphid is entirely by parthenogenesis, with unfertilized viviparous [...] producing new generations of females. There is no sexual stage in the life cycle. Wingless females of the mottled arum aphid are shiny whitish, yellowish

Aphidius ervi

Aphidius ervi The parasitic wasp Aphidius ervi is available in a bottle ( Ervipar ). Spread the material on rock wool slabs or in Diboxes Make sure the material [...] ervi is a very dark aphid parasitoid. The waist is entirely black, without striping. As it can develop in large aphid species they are generally much larger [...] Myzus spp. is their host, they will be of the same size. The parasitization behaviour resembles Aphidius colemani , however, Aphidius ervi is more aggressive