HAPLOTHRIPS TRITICI PDF
Haplothrips tritici (Kurdjumov) (Bournier A. / ENSA Montpellier) Adults Still in ear of wheat.. Haplothrips tritici (Kurdjumov) (Coutin R. / OPIE) pupa Overwintering. The leaves of wheat are sucked by H. tritici adults, causing streaks. The ripening seeds of wheat are sucked by H. tritici nymphs, leaving brown spots caused by. PDF | The wheat thrips, Haplothrips tritici, is known from across eastern Europe and adjoining areas of Asia into western Europe and north.
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Larvae over-winter underground and among stubble. If you would like to, you can learn more about the cookies we use. Close Find out more. Zoology, Journal of Pure and Applied Biology4, — Insecticide applications may increase risk of harmful side effects since H.
Females lay their eggs in small groups containing eggs each or, less frequently, one at a time, on the interior sides of ear scales and ear shank. In China, indimethoate and trichlorphon were applied tritcii control of H.
wheat thrips (Haplothrips tritici)
Tanskii took the following symptoms as indicators of the degree of grain infestation: Adults appear at the beginning of ear formation of winter cereals, usually in May-June. In Kiev, Russia, H. Kurdjumov first mentioned that H.
Adult has immature ovaries and requires additional feeding. Han and Xu summarized the economic importance of H. Biological Control The effect of natural enemies on field populations of H.
Larval peak density occurs during the milk development stage of seeds. Fore tibia yellow except for the base and edges, fore tarsus yellow. Dry and warm weather during ear emergence and flowering of wheat the period of egg-laying and the beginning of larva feeding promotes increased insect survival; prolonged air drought and cool rainy weather are both unfavorable for insect development.
Haplothrips (Haplothrips) tritici
The number of adults, eggs and nymphs on spring wheat were During the stage of early dough development the larvae start to leave ears. A field study carried out in China in during the growth stages of winter wheat and spring wheat showed that from early May to early June, the number of adults at the last stage of booting or the initial heading stage, the number of eggs at flower stage and the number of nymphs at milk stage on winter wheat were 3.
Tastenov and Shul’gina reported that fenvalerate applied between wheat germination and heading may control wheat thrips. Several species of fungi and bacteria were isolated from the grain furrows damaged by H. This is to ensure that we give you the best experience possible. In Russian Sitchenko N. Zashchita rastenii ot vreditelei i boleznei v Zapadnoi Sibiri.
Volodichev reviewed the harmfulness of H. Chemical treatment might be envisaged in some cases, but never later than the period of milky ripeness Kamechenko, Email this article Login required.
Unlike the Sunn Pest, the flour-baking quality of grain damaged by thrips does not decrease, however the sowing quality of seeds drops notably. The ratios between them were about 1: Shurovenkov and Mikhailovna reported that the degree of damage by H.
During development of cereals thrip adults invade winter rye at first, then winter wheat. Flying adults migrate by way of air streams at heights of 1. Information was provided showing that late winter wheat varieties were times more infested by H.
Haplothrips tritici – Wikispecies
ThripsWiki ThripsWiki – providing information on the World’s thrips. Class Insecta, order Thysanoptera, suborder Tubulifera, family Phloethripidae, tribe Haplothripini, genus Haplothrips. Journal of Natural History41, — Most were found on winter wheat, with spring wheat, spring barley and winter barley less infested Zuranska et al.
User Username Password Remember me. In Russian Tanskii V. At this ratio of host to predator, marked damage to crops does not occur and other control measures may be unnecessary.
Cultural Control Deep ploughing to a depth of about 25 cm after spring wheat harvest or after one shallow ploughing, is an effective method of controlling the population of H.
Part of larvae metamorphosis occurs underground. In Russian Fisechko R. A study of the damage to crops by thrips under the natural conditions prevailing in southern Ukraine was carried on for four years.
Knowledge Bank home Change location. In spring the larvae passing through metamorphosis perish because of heat and lack haployhrips moisture.