scholarly journals Species composition of predators of spider mites in persimmon orchards in Nara Prefecture with reference to the effect of weed management.

2009 ◽  
Vol 18 (1) ◽  
pp. 7-16 ◽  
Author(s):  
Yoshinori KUNIMOTO ◽  
Tomoha NAKAMA ◽  
Hiroshi AMANO ◽  
Akio TAKAFUJI
Keyword(s):  
Species Composition ◽  
Weed Management ◽  
Spider Mites ◽  
Nara Prefecture

Spider mites of agricultural importance in China, with focus on species composition during the last decade (2008–2017) 

2018 ◽  
Vol 23 (11) ◽  
pp. 2087 ◽  
Author(s):  
Peng-Yu Jin ◽  
Lu Tian ◽  
Lei Chen ◽  
Xiao-Yue Hong
Keyword(s):  
Species Composition ◽  
Dominant Species ◽  
Integrated Management ◽  
Management Strategies ◽  
Spider Mites ◽  
Management Program ◽  
Pest Species ◽  
Panonychus Citri ◽  
Important Species ◽  
River Region

Understanding pest species composition and their geographic distribution of important spider mites is fundamental and indispensable to establish an integrated pest management program. From a long-term survey during 2008–2017 in mainland China, we found that Tetranychus truncatus was the most frequently sampled Tetranychus spider mite (48.5%), followed by T. pueraricola (21.2%), T. kanzawai (12.5%), T. urticae (red) (5.7%) and T. urticae (green) (4.5%). Among them, T. truncatus was the major mite pest in the north of China. T. kanzawai was the dominant species in the Middle and Lower Reaches of the Yangtze River Region and T. pueraricola was the most important species in the southwest region. Other common and serious pests include Amphitetranychus viennensis (6.8%) and Panonychus citri (3.8%). This pattern was largely different from that in 2002–2004, when T. urticae (green and red) was believed to be the most serious mite pest. The factors involved in the change of species composition are not clear and need more exploration. We suggested that the increasing corn planting range may be partly responsible for the conversion of dominant species from other spider mites to T. truncatus. Further research on the mechanisms underlying the change of dominant species will help develop integrated management strategies.

scholarly journals Acarocomplex of grape plantations of the South of Ukraine

2020 ◽  
pp. 12-16
Author(s):  
Yu. Klechkovskyi ◽  
K. Shmatkovska
Keyword(s):  
Species Composition ◽  
Growing Season ◽  
Spider Mites ◽  
Trophic Groups ◽  
Maximum Phase ◽  
Trophic Links ◽  
Grape Varieties ◽  
Southern Ukraine ◽  
Intensive Growth

Goal. To determine the species composition, dominant species, and territorial distribution of predatory and herbivorous ticks (phytophages) in the vineyards of southern Ukraine. Methods. Field — route surveys of vineyards to study the fauna, trophic links and colonization of vineyards with ticks. Laboratory — determination of the species composition of representatives of the acarofauna of vineyards. Results. During the study period, 17 species of ticks belonging to different trophic groups were identified, among which ticks dominate — phytophages of the Tetranychidae and Eriophyidae families. The most common among them were mites — phytophages, namely spider mites (Shhizotetranychus Oud., Tetranychus turkestanicus Ug.et Nich). Pests during the growing season go through four phases: prodromal, eruptive, gradation maximum and crisis. The graduation maximum phase, which is characterized by their greatest number, was noted during the period of intensive growth of berries and falls at the end of June — beginning of August (BBCH 71—79). The dynamics of the number of ticks by varieties is shown. The varieties most susceptible to spider mites were identified, the period of technical ripeness of which is medium, late or very late. Conclusions. Identified 17 species of ticks belonging to different trophic groups: phytophages, acariphages and mycophages. Based on observations of changes in the number of pests on vineyards during the growing season, four phases are distinguished. The graduation maximum phase occurs at the end of June — beginning of August (VVSN 71—79). It was established that all the studied grape varieties were populated by mites to varying degrees, the most susceptible were varieties of medium and late ripening.

scholarly journals Species composition of spider mites (Acari: Tetranychidae) on vegetables in Okinawa, southwestern Japan

2009 ◽  
Vol 44 (4) ◽  
pp. 627-633 ◽  
Author(s):  
Suguru Ohno ◽  
Akiko Miyagi ◽  
Tomoko Ganaha-Kikumura ◽  
Tetsuo Gotoh ◽  
Yasuki Kitashima ◽  
...  
Keyword(s):  
Species Composition ◽  
Spider Mites

Effects of crop rotation and field management methods on weed density and species composition in the southeastern part of Latvia

2015 ◽  
Vol 2 ◽  
pp. 235
Author(s):  
Jevgenija Ņečajeva ◽  
Zane Mintāle ◽  
Ieva Dudele ◽  
Anda Isoda-Krasovska ◽  
Jolanta Čūrišķe ◽  
...  
Keyword(s):  
Species Composition ◽  
Weed Control ◽  
Crop Rotation ◽  
Weed Management ◽  
Management Practices ◽  
Integrated Weed Management ◽  
Weed Species ◽  
Southeastern Part ◽  
Weed Density ◽  
Field Management

<p class="R-AbstractKeywords"><span lang="EN-GB">Integrated weed management (IWM) is a complex approach to weed control that is based on use of several different methods complementing each other, instead of relying on one single method, like chemical weed control. Weed control methods that can be used as parts of IWM strategy include mechanical weed control, application of herbicides, low tillage, changes in the rate and application time of fertilizers, use of undersown crops and crop rotation. Weed surveys were carried out in 2013 and 2014 in the southeastern part of Latvia. The aim of this study was to assess the effect of crop rotation and other field management practices on weed density and weed species composition using the data collected in the surveys. Survey was carried out in the arable fields of conventional farms within four different size categories. One of the significant factors that explained the variation of weed composition within a field was a proportion of cereals in crop rotation within a four year period. Further surveys are required to estimate the effects of climatic variables. Density-dependence can also be important for practical management decisions for particular weed species and should be investigated.</span></p>

Species composition of thrips (Thysanoptera: Thripidae) and spider mites (Acari: Tetranychidae) on cultivated chrysanthemum (Asteraceae) in Okinawa, southwestern Japan

2012 ◽  
Vol 15 (2) ◽  
pp. 232-237 ◽  
Author(s):  
Tomoko GANAHA-KIKUMURA ◽  
Suguru OHNO ◽  
Keisuke KIJIMA ◽  
Masami MASUMOTO ◽  
Naomi MAEKADO
Keyword(s):  
Species Composition ◽  
Spider Mites

Weed species composition of conventional soyabean crops in Hungary is determined by environmental, cultural, weed management and site variables

Weed Research ◽  
2016 ◽  
Vol 56 (6) ◽  
pp. 470-481 ◽  
Author(s):  
G Pinke ◽  
K Blazsek ◽  
L Magyar ◽  
K Nagy ◽  
P Karácsony ◽  
...  
Keyword(s):  
Species Composition ◽  
Weed Management ◽  
Weed Species
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