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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Field Monitoring and Economic Thresholds Nefedov estimated the degree of injury to spring wheat by comparing the weight of grains of different samples with different thrips populations infesting them.
First larvae suck sap from ear scales and flower glumes, then from caryopsis. In the central Chernozem region of the former USSR induring the milky-ripe stage and at the beginning of the waxy-ripe stage of winter wheat, numbers of H. In the Saratov region of the former USSR, duringtests were carried out in irrigated wheat fields to determine the injuriousness of H.
According to this, if there are 18 adults per ear, then there may be about Tijdschrift voor Entomologie, 55— A study of the damage to crops by thrips under the natural conditions prevailing in southern Ukraine was carried on for four years. Deutsche Entomologische Zeitschrift57, — Mature larva is bright red, with two setae at the end of abdomen.
Predatory thrips, Aelothrips spp. Email the author Login required. The ability of plants growing from seeds damaged by the thrips to regenerate damaged root systems was reduced, as was the plant weight and leaf area Shurovenkov, haplotbrips The results revealed a certain relationship between the number of thrips entering an ear at the stage of blooming and the consequent loss of grain weight. The main host plants are winter and spring wheat, rye, wheatgrass and some hplothrips gramineous plants; spring wheat is the most favorable for insect development.
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. The abundance of wheat tfitici was times lower in rotation crops than in monocultures Antorenko, Continuing to use www. Larvae over-winter underground and among stubble. The number of adults, eggs trritici nymphs on spring wheat were First instar larva are greenish-yellow, becoming reddish after hours, and bright red after the first molt.
Formation of thrips Thysanoptera fauna of wheat sowings on new lands of North Kazakhstan. Journal of Natural History41, — In autumn and spring many larvae die during rainy weather which favors development of entomopathogenic fungi, namely Entomophora spp.
AgroAtlas – Pests – Haplothrips tritici Kurd. – Wheat Thrips
In Bulgaria, research showed that the wheat varieties which had a shorter vegetation period were attacked to lower degrees and showed lower loss than haplothripw that matured later Veselinov, When preparing to hibernate the larvae can penetrate into soil to a depth of cm or more to 90 cm. 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.
African Journal of Biotechnology10, — Female fecundity is estimated at eggs. The period of metamorphosis is strongly prolonged about one month. In Kiev, Russia, H. Han and Xu summarized the economic importance of H. Female length haplotgrips 1.