• Praon volucre

  January 1, 1970

  label Turn the lid until the small holes align with the opening The dosage of Aphiscout depends on climate, crop and aphid density and species, and should [...] Hang the cylinder horizontally from a crop wire, branch, or leaf stalk by winding the label around it and sticking the end of the label back onto the label [...] Aphid control with the parasitic wasp Praon volucre Praon volucre is a parasitic wasp that belongs to the family Braconidae and to the subfamily Aphidiinae

• Crazy roots, hairy roots, crown gall

  January 1, 1970

  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, but [...] of the plant resulting from the Rhizobium infection. Rhizobium rhizogenes puts a Ri-plasmid in the plant tissue and causes a genetic change in the plant [...] species cause the growth of galls on the stems, which are first white and later turn brown. Only Rhizobium radiobacter causes galls and tumours on underground

• Bacterial canker of tomato

  January 1, 1970

  wounds and then growing into the vessels of the plant. Plant growth is inhibited and the plant wilts because the xylem vessels become blocked. The bacterium [...] centre. In potato, the disease usually only occurs in the second half of the season. The first symptoms are wilting of the lower leaves and subsequent expansion [...] expansion of the wilt upwards. Cutting the stem at the foot shows whitish ooze with bacteria in the case of C lavibacter infection, but other than that the disease

• Natupol Trio

  January 1, 1970

  placing the hives before opening the flight holes, this allows the bumblebees to calm down Protect the hives from direct sunlight and rain, and weigh down [...] colonies, the ‘Beehome’ system should be closed. Remove the plastic liner and the sugar water tank from the hive, then place the liner back inside. Seal the [...] workers emerge from the brood in the weeks after the introduction, increasing both colony size and pollination performance. After some weeks the colony will reach

• Onion fly

  January 1, 1970

  or in the soil close to the base of onion plants. The onion fly larvae that emerge from the eggs tunnel into the onion bulbs, harming the roots and foliage [...] death of the onion plant. The roots and leaves are harmed when the onion fly larvae tunnel into the onion bulbs. This damage may decrease the quality of [...] measuring between 5 and 7 mm long, with a grayish-yellowish body and clear wings. The eggs are laid by the female onion fly on the young leaves, necks

• Angular leaf spot

  January 1, 1970

  lesions on the underside of the leaf. They enlarge to angular spots, often limited by the small veins. The distinctive feature is the way the lesions look [...] visible on the upper side of the leaf as irregular spots which are first reddish brown and then become necrotic. The foliar symptoms are the most important [...] Xanthomonas fragariae overwinters in plants and dead leaves, that become the primary source of infection in the spring. The bacteria are also introduced in a crop

• Aphipar

  January 1, 1970

  mummy. The adult parasitic wasp emerges through a hole at the rear of the mummy. The first mummies are noticed in the crop around 10-14 days after the first [...] parasitic wasps emerge from the mummies and females lay their eggs into aphids . The next generation of parasitic wasps develops inside the aphid, which converts [...] least a few days Dosage The dosage of Aphipar depends on climate, crop and aphid density and should always be adjusted to the particular situation. Start

• Oleander aphid

  January 1, 1970

  viviparous and parthenogenetic, meaning that they deposit nymphs rather than eggs and that the progeny are clones of the adult female. The nymphs feed [...] aphids can easily be seen on the shoots of the host plants. The damage caused by the aphid colonies is mainly aesthetic due to the large amounts of sticky honeydew [...] produced and the resulting black sooty mould that grows on the honeydew. Growing tips can be deformed. Repeated heavy infestation throughout the year can

• Cookie Statement

  January 1, 1970

  computer and the banner will no longer appear as long as the cookie is active. After the end of the cookie’s service life or if you delete the cookie, the [...] file that is stored on your computer by your browser when you visit the website. The main function of cookies is to distinguish one user from the other [...] other. Your browser sends us the information stored the next time you visit our site. The use of cookies is secure. They do not process personal data, such

• Pollination

  January 1, 1970

  n 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 [...] comes to the production of vegetables, fruit and seed. Well pollinated crops result in considerably higher yields and improve the quality and shelf-life [...] ation. Cross pollination, is the transfer of pollen from the anther of one flower to the stigma of another flower on the same plant or on another plant