ALFALFA PESTS IN SAMARA REGION FOREST-STEPPE

2016 ◽  
Vol 1 (4) ◽  
pp. 28-32
Author(s):  
Перцева ◽  
Elena Pertseva
Keyword(s):  
Field Studies ◽  
Forest Steppe ◽  
Research Station ◽  
Adelphocoris Lineolatus ◽  
Age Related ◽  
The Family ◽  
Different Types ◽  
Alfalfa Seed ◽  
Seed Yields ◽  
Selection Of

The purpose of research is alfalfa yields increasing by crops of different ages in the conditions of forest-steppe of the Samara region. Field studies were carried out in breeding crop rotation of department introduction, selection of feed and oilseeds Volga research station named after P.N. Konstantinov in 2014. Entomofauna alfalfa crops of different varieties and ages were studied mowing butterfly net. More numerous entomofauna was recorded in crops of alfalfa 2011 compared with age-related crops in 2008. Specialized herbivores studied culture were found in the growing season 2014 agrocenoses alfalfa crops – alfalfa tolstonozhka (Bruchophagus roddi Guss), alfalfa semyaed (Tychius flavus), alfalfa weevils (Sitona humeralis Steph.), Alfalfa bug (Adelphocoris lineolatus Goeze), leaf alfalfa weevil larvae (Phytonomus variabilis Hbst.) and larvae of alfalfa bollworm (Heliothis viriplaca Hfn.). Forms relating to herbivores Polyphagous and Oligophagous cereals were also recorded. In addition agrocenoses met: Entomophages predator’s cocktsinellidy (Coccinellidae), different types of spiders (Arachnida) and representatives of the family of grasshoppers (Tettigonioidea). Large foliage of alfalfa plants was recorded under option Population 4. Several smaller foliage of plants observed in crops of alfalfa 2011 compared with planting in 2008. On the 3-year agrocenoses best foliage appeared on variety Guzel which had the lowest figures in the age crops. Alfalfa seed yields mainly depend on the age of the studied agrocenosis culture. Alfalfa crop given harvest seeds in 3.6-4.7 times more than the age-crops in 2008. The highest seed yield was obtained from the varieties of Emerald in 2008 and in 2011.

scholarly journals Criteria for attracting plants for introduction to the steppe zone of Khakassia

2021 ◽  
pp. 33-41
Author(s):  
L. P. Kravtsova ◽  
S. A. Saaja
Keyword(s):  
Type Species ◽  
Steppe Zone ◽  
Source Material ◽  
Forest Steppe ◽  
Central Asian ◽  
The Family ◽  
Dry Conditions ◽  
Ecological Type ◽  
Continental Climate ◽  
Selection Of

Based on the research carried out in 1995-2019, the main approaches to the selection of criteria for attracting introduced species in the dry conditions of Khakassia are substantiated. The objects of research are 14 species of medicinal plants of the family Lamiaceae Lindl. different areas of origin. During the introduction, we used the method of comparing climates and generally accepted research methods. The most promising sources of source material are species that have Euro-Asian, Siberian-Central Asian, and North American ranges; by belt-zonal type - forest-steppe, mountain-steppe boreal; by ecological type - species from the group of mesoxerophytes, xeropetrophytes that have wide ecological amplitude, the requirements of which correspond to the conditions of the sharply continental climate of Khakassia.

THE EFFECTS OF ALFALFA PLANT BUG (HEMIPTERA: MIRIDAE) FEEDING LATE IN THE SEASON ON ALFALFA SEED YIELD IN NORTHERN SASKATCHEWAN

1993 ◽  
Vol 125 (5) ◽  
pp. 815-824 ◽  
Author(s):  
Juliana J. Soroka ◽  
Dorothy C. Murrell
Keyword(s):  
Seed Yield ◽  
Acyrthosiphon Pisum ◽  
Pea Aphid ◽  
Field Cage ◽  
North Central ◽  
Alfalfa Plant ◽  
Adelphocoris Lineolatus ◽  
Alfalfa Seed ◽  
Seed Yields ◽  
Beneficial Arthropod

AbstractA 4-year field cage study was conducted to determine what effects feeding of alfalfa plant bug, Adelphocoris lineolatus (Goeze), late in the season had on alfalfa seed yields. When zero, one, two, or four alfalfa plant bugs were placed in sleeve cages containing stems of alfalfa at the green pod stage of growth, there was a significant decrease in the number of pods per cage and per raceme, the number of healthy seeds, and the weight of seeds with two or four bugs per cage. Increasing the duration of infestation resulted in significant increases in the number of damaged seeds per cage. An insecticide field trial was conducted in north central Saskatchewan in 1988 to determine what effects the occurrence of plant bugs had on seed yields of alfalfa. Alfalfa plant bug, lygus bug (Lygus spp.), pea aphid [Acyrthosiphon pisum (Harris)], and beneficial arthropod populations were monitored from 23 June to 1 September 1988. Seed yields were significantly greater in plots that were treated with trichlorfon in June and in June and August than in plots that were treated in August alone. The implications of a large alfalfa plant bug population late in the season to alfalfa seed production in the area are discussed.

scholarly journals Methods and prospects of selection of sugar corn adapted to the conditions of the Central Forest-Steppe of Ukraine

2021 ◽  
Vol 1 (99) ◽  
pp. 230-245
Author(s):  
V. Ya. Bilonozhko ◽  
O. M. Vinogradova ◽  
S. P. Poltoretsky ◽  
N. M. Poltoretskaya
Keyword(s):  
Field Experiments ◽  
Agricultural Research ◽  
Sugar Content ◽  
Yield Potential ◽  
Forest Steppe ◽  
Research Station ◽  
Statistical Research ◽  
Morphobiological Characteristics ◽  
Growing Conditions ◽  
Selection Of

The aim of the research is selection and genetic improvement of the source material of maize silica and sugar subspecies by methods of classical selection and experimental mutagenesis and synthesis on their basis of high-yielding, adaptive hybrids capable of stably realizing their yield potential in different growing conditions. Research methodology. Field experiments were conducted at the Cherkasy State Agricultural Research Station NSC "IZ NAAN", located in the central Forest-Steppe of Ukraine (Smila) during 2020-2021. The period of action of active temperatures (above 10 ° С) begins on April 20–28 and lasts 155–180 days. The probability of frost to -3 ° C during the sowing of corn (III decade of April and the first decade of May) is 10 and 5 %, respectively, and during ripening (September – first half of October) from 1 to 30 %. Sowing of the experimental material was carried out in the third decade of April in early May. During the growing season, phenological observations were made, during flowering the plants self-pollinated under parchment insulators, crossbreeding, evaluation and selection of the best samples were performed. Common field, laboratory and statistical research methods were used. Research results. Based on the morphobiological characteristics and assessment of the set of features of the samples of the sugar corn collection, the length of the period from emergence to flowering to 75 % of the panicles was determined, early-maturing samples were selected. When studying the genetic variability of the characteristics of the performance of inbred lines such as weight and length of the head, the number of rows of grains revealed the best lines, the average of which differs significantly from the standard. Based on genetic analysis of performance traits, it has been shown that the selection of starting material by cob weight and length may be most effective, as under favorable conditions these traits are controlled by additive genes, while other traits play a crucial role. Conclusions. The frequency of the obtained more productive self-pollinated lines on the original hybrid material with a significant excess of control indicators for such elements of productivity as cob weight, length and number of rows of grains is 7.19 ± 1.36 %. Selection based on "number of rows of grains" is effective, the best multi-row lines are selected based on genetic sources from Australia. As a result of the analysis of the sugar content in the grains, samples with a sugar content of 8.6% in the top sugar and 5.8 % in the white corn were selected. The coefficient of inheritance of quantitative traits, such as cob weight, length, number of rows of grains, number of grains in a row, is 0.71–0.93, which indicates the possibility of successful selection of these traits. All studied numbers exceed the hybrid standard by cob weight and number of rows of grains. Numbers 269, 272 and 276 and 277 were significantly better in terms of yield, with yields of 15.7–19.8 t/ha.

Early and Late-Season Insecticide Applications in Seed Alfalfa: Impact on Pest Species and Yield2

1990 ◽  
Vol 25 (4) ◽  
pp. 548-558 ◽  
Author(s):  
B. D. Schaber ◽  
W. A. Charnetski ◽  
T. Entz
Keyword(s):  
Seed Yield ◽  
Field Studies ◽  
Pest Species ◽  
Seed Formation ◽  
Alfalfa Plant ◽  
Late Season ◽  
Time Of Application ◽  
Adelphocoris Lineolatus ◽  
Pest Insects ◽  
Seed Yields

Alfalfa is grown for seed on approximately 9,500 ha in Alberta, Canada. Pest insects, such as Lygus spp. and the alfalfa plant bug, Adelphocoris lineolatus (Goeze), (Heteroptera: Miridae) can reduce seed yield if they are not controlled. However, little is known of the damage caused by these pest insects during late seed formation and development. Field studies were conducted during 1983 and 1986 to determine the effect of early- and late-season applications of the insecticides trichlorfon and phosmet alone and combined on Lygus spp., alfalfa plant bug and seed yield of alfalfa. Effects were dependent on the time of application, year, and insect species. Lygus spp. densities for late-season trichlorfon treatments were significantly (P < 0.05) lower than the control. Trichlorfon and phosmet had no effect on densities of alfalfa plant bugs in 1983, but some late-season trichlorfon treatments did reduce plant bug densities in 1986. Seed yields in plots receiving late-season trichlorfon were generally greater than in the control in both years.

scholarly journals Species Limits in Antbirds (Thamnophilidae): The Warbling Antbird (Hypocnemis Cantator) Complex

The Auk ◽  
2007 ◽  
Vol 124 (1) ◽  
pp. 11-28 ◽  
Author(s):  
Morton L. Isler ◽  
Phyllis R. Isler ◽  
Bret M. Whitney
Keyword(s):  
Evolutionary History ◽  
Field Studies ◽  
Species Group ◽  
Species Level ◽  
As Species ◽  
The Family ◽  
Species Pairs ◽  
Different Types ◽  
Physical Barriers ◽  
Future Work

Abstract Six populations of Warbling Antbird (Hypocnemis cantator) currently considered subspecies are more appropriately recognized as species, given the multiplicity of vocal differences that distinguishes them. These vocal differences are as great or greater than vocal differences documented between syntopic species-pairs in the family Thamnophilidae (Isler et al. 1998). Evidence is also provided that two forms currently considered subspecies are syntopic and that two others are parapatric without apparent physical barriers. Vocally, the pair of syntopic taxa were distinguished dramatically, but solely, by common calls. The finding that common calls were as diversified as songs in this species-group suggests that calls may be as important as songs in reproductive isolation. Future field studies should therefore focus on clarifying the function of different types of thamnophilid vocalizations and elucidating their role in speciation. This is the first contribution to a multifaceted analysis of the vocalizations and genetic structure of typical antbirds (Thamnophilidae) in Amazonia. In future work, results of the vocal analysis will be compared with a parallel genetic study, after which the two analyses will be integrated to suggest a phylogeny. The present study and preliminary studies of genetic differentiation (e.g., Bates et al. 1999) make it clear that the H. cantator complex has had a long evolutionary history that produced greater species-level diversity than was recognized previously. Límites de Especies en Thamnophilidae: El Complejo de Hypocnemis cantator

scholarly journals Macrospatial structure and biodiversity of bat communities (Chiroptera) of the European fauna in the forest-steppe habitat

2021 ◽  
Vol 2020 (20) ◽  
pp. 3-9
Author(s):  
Anatoliy A. Bilushenko ◽  
Keyword(s):  
Species Composition ◽  
Diversity Index ◽  
Trophic Levels ◽  
Forest Steppe ◽  
Biotopic Distribution ◽  
The Family ◽  
Different Types ◽  
Myotis Nattereri ◽  
Forest Parks ◽  
Eptesicus Serotinus

Twelve bat species of seven genera of the family Vespertilionidae were studied in conditions of the Central Forest-steppe of Ukraine (Myotis nattereri, M. daubentonii, M. dasycnemе, Barbastella barbastellus, Plecotus auritus, Pl. аustriacus, Pipistrellus pуgmaeus, P. kuhlii, P. nathusii, Nyctalus noctula, N. leisleri, Vespertilio murinus, and Eptesicus serotinus). The data were collected during decade-long surveys (2007–2016) in the Central Forest-Steppe (Cherkasy, Kirovohrad, and Kyiv Oblasts, Ukraine) at 23 localities. The census route included 680 km walked along the surveyed territory. The species composition of different habitats was determined during faunal and indoor surveys, when a certain type of landscape changes to another, and also by comparing the species composition of communities in different types of habitats. For species diversity comparison, five types of habitats were selected: forest (W), towns and villages (A-W), wood lines and fields (F-W), wetland areas (A-W), and fores parks (W-P). The analysis of record localities of bats and the character of their biotopic distribution shows that most species prefer floodplains with trees (wetland areas (A-W) and forest parks (W-P)), where the maximum number of species was noted. Quite high diversity was also noted for settlements (T-W). Based on abundance, a noticeable decrease of the diversity index occurs during the transfer from the area of wetland types to fields and wood lines. Due to the character of differences between groups of local bat species, relative to spatial distribution of species on topical and trophic levels, the performed analyses helped us to outline four groups of species. The first group includes species united by open type habitats (N. noctula and N. leisleri). The second group comprises V. murinus, E. serotinus, P. pуgmaeus, and P. kuhlii, which are very hard to relate to a separate type of locality. The third group includes species that prefer closed habitats: M. nattereri, M. daubentonii, Pl. auritus, P. nathusii, and B. barbastellus. The fourth group comprises M. dasycnemе, a species that is relatively rare in the studied territory and is related to lakes and slow flowing water bodies.

The Arabic Origins of English and Indo-European “Definite Articles”: A Radical Linguistic Theory Approach

2016 ◽  
Vol 4 (6) ◽  
pp. 26
Author(s):  
Zaidan Ali Jassem
Keyword(s):  
Comparative Method ◽  
Linguistic Theory ◽  
General Level ◽  
Theory Approach ◽  
Tree Model ◽  
Linguistic Change ◽  
European Languages ◽  
The Family ◽  
Different Types ◽  
Definite Articles

This paper traces the Arabic origins or cognates of the “definite articles” in English and Indo-European languages from a radical linguistic (or lexical root) theory perspective. The data comprises the definite articles in English, German, French, Spanish, Portuguese, Italian, Romanian, Latin, Greek, Macedonian, Russian, Polish, Sanskrit, Hindi, Bengali, Persian, and Arabic. The results clearly indicate that five different types of such articles emerged in the data, all of which have true Arabic cognates with the same or similar forms and meanings, whose differences are due to natural and plausible causes and different routes of linguistic change, especially lexical, semantic, or morphological shift. Therefore, the results support the adequacy of the radical linguistic theory according to which, unlike the Family Tree Model or Comparative Method, Arabic, English, German, French, Latin, Greek, and Sanskrit not only belong to the same language family, renamed Eurabian or Urban family, but also are dialects of the same language, with Arabic being their origin all because only it shares the whole cognates with them all and because it has a huge phonetic, morphological, grammatical, and lexical variety. They also manifest fundamental flaws and grave drawbacks which plague English and Indo-European lexicography for ignoring Arabic as an ultimate ancestor and progenitor not only in the treatment of the topic at hand but in all others in general. On a more general level, they also show that there is a radical language from which all human languages stemmed and which has been preserved almost intact in Arabic, thus being the most conservative and productive language

Information Practices of Baby Boomers as Caregivers

2013 ◽  
Author(s):  
Khuan Seow ◽  
Nadia Caidi
Keyword(s):  
Social Policy ◽  
Baby Boomers ◽  
Information Needs ◽  
Family Members ◽  
Age Groups ◽  
Maladie D’Alzheimer ◽  
Policy Makers ◽  
Age Related ◽  
The Family ◽  
Growing Age

Canada has an aging population with the fastest growing age groups (80 and 45-64 years old) vulnerable to age-related diseases such as Alzheimer’s disease. Caregiving responsibilities often fall to the family members of the afflicted without much attention and consideration being placed on the information needs of these caregivers. We call for a better understanding of these caregivers' information needs and uses by social policy makers as well as information providers.La population du Canada a tendance à vieillir considérablement, avec la hausse la plus rapide dans les groupes d’âge (80 et 45 à 64 ans). Les personnes âges sont très vulnérables à toute sorte de maladies, telles que la maladie d’Alzheimer. La responsabilité revient souvent aux membres de la famille qui doivent prendre soin des personnes atteintes de cette maladie. Or, nous ne connaissons que peu de chose sur les besoins en information des personnes qui prennent soin de ces malades de l’Alzheimer : qui sont-ils ? Quelles sont leurs sources... 

scholarly journals Multi-Criteria Selection of Additives in Porous Asphalt Mixtures Using Mechanical, Hydraulic, Economic, and Environmental Indicators

2021 ◽  
Vol 13 (4) ◽  
pp. 2146
Author(s):  
Anik Gupta ◽  
Carlos J. Slebi-Acevedo ◽  
Esther Lizasoain-Arteaga ◽  
Jorge Rodriguez-Hernandez ◽  
Daniel Castro-Fresno
Keyword(s):  
Cellulose Fiber ◽  
Environmental Indicators ◽  
Asphalt Mixtures ◽  
Environmental Benefits ◽  
Modified Bitumen ◽  
Porous Asphalt ◽  
Different Types ◽  
Product Assessment ◽  
Polymer Modified Bitumen ◽  
Selection Of

Porous asphalt (PA) mixtures are more environmentally friendly but have lower durability than dense-graded mixtures. Additives can be incorporated into PA mixtures to enhance their mechanical strength; however, they may compromise the hydraulic characteristics, increase the total cost of pavement, and negatively affect the environment. In this paper, PA mixtures were produced with 5 different types of additives including 4 fibers and 1 filler. Their performances were compared with the reference mixtures containing virgin bitumen and polymer-modified bitumen. The performance of all mixes was assessed using: mechanical, hydraulic, economic, and environmental indicators. Then, the Delphi method was applied to compute the relative weights for the parameters in multi-criteria decision-making methods. Evaluation based on distance from average solution (EDAS), technique for order of the preference by similarity to ideal solution (TOPSIS), and weighted aggregated sum product assessment (WASPAS) were employed to rank the additives. According to the results obtained, aramid pulp displayed comparable and, for some parameters such as abrasion resistance, even better performance than polymer-modified bitumen, whereas cellulose fiber demonstrated the best performance regarding sustainability, due to economic and environmental benefits.

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