scholarly journals Growing season and productivity of naked oats

2020 ◽  
Vol 21 (3) ◽  
pp. 245-252
Author(s):  
N. V. Krotova ◽  
G. A. Batalova ◽  
Ren Changzhong ◽  
G. P. Zhuravleva
Keyword(s):  
Growing Season ◽  
Climatic Conditions ◽  
Early Variety ◽  
Naked Oat ◽  
Coefficients Of Variation ◽  
The Usa ◽  
Naked Oats ◽  
Very High ◽  
Sustainable Productivity

A well-studied source material is required for breeding problems to be successfully solved. Evaluation of samples in varying climatic conditions enables to identify highly productive sources. The results of assessment of 56 naked oat varieties of different ecological-geographical origin by duration of the growing season are presented. The studies were carried out in 2017 - 2019 on the sod-podzolic middle-clay soils of the Kirov region. Considerable differences between variety samples according to periods of ripening have been revealed. Classification of naked oat samples by duration of growing season for Volga-Vyatka region is proposed. The most numerous were the groups of middle season and middle-late samples – 41.1 and 35.7 %, respectively, late samples – 17.8 %. The set of early variety samples was very limited (5.4 %). The productivity of naked oat samples varied by years, variation level changed from insignificant to very high (V = 7.91...91.76 %). In the group of early varieties, coefficients of variation were 21.47...34.58 % with productivity of 165...330 g/m2. The evaluation of middle season samples showed mainly high and very high levels of variation in productivity. The exception was made by samples of Belarus k-3899 BYAS-154 (7.91 %) and 15094 MF9521-247 (16.83 %) from the USA with productivity of 139...161 and 182...244 g/m2, respectively. In middle-late and late variety samples, the coefficients of variation within the group were 21.44...68.36 %, and 26.25...68.75 %, respectively. Middle season samples with sustainable productivity are recommended for use in breeding practice, they are k-3897 BYAS-156, k-3898 BYAS-155 (Belarus), 15155 MF9016-31 (USA).

scholarly journals Formation of productivity of naked oat varieties under different cultivation conditions

2021 ◽  
Vol 51 (3) ◽  
pp. 56-64
Author(s):  
O. A. Isachkova ◽  
A. O. Loginova ◽  
E. A. Egushova
Keyword(s):  
Growing Season ◽  
Sowing Date ◽  
Structural Elements ◽  
Seeding Rate ◽  
Early Variety ◽  
Naked Oat ◽  
Sowing Dates ◽  
Naked Oats ◽  
Sowing Period ◽  
Late Sowing

The results of studying naked oat yield indicators depending on different sowing dates and seeding rates are presented. The study was carried out in 2016-2020 in a field experiment in Western Siberia. Samples of different groups of the crop ripeness were studied: mid-early variety Gavrosh and mid-ripening variety Ofenya. The duration of the growing season of naked oats was influenced by meteorological factors. There was a tendency observed for a decrease in the duration of interphase periods and the growing season as a whole from an early sowing date to a later one by 4-10 days for the Gavrosh variety and by 8-10 days for the Ofenya variety. The yield of the Gavrosh variety at an early sowing period significantly exceeded the same indicator at a mid-period by 17.6% and at a late period - by 19.0%, of the Ofenya variety - by 10.9% and 16.2%, respectively. The increase in the yield for the early sowing period of the mid-early variety Gavrosh relative to the middle and late sowing dates was determined by a larger grain size (r = 0.6929 ... 0.9535 at R = 0.5140). For the midripening variety Ofenya, the number of productive stems per unit area (r = 0.7444 ... 0.9054 with R = 0.5140) and the weight of 1000 grains (r = 0.5350 ... 0.8297 at R = 0.5140) were of more importance in the years of research on all variants. The most optimal seeding rate for naked oat varieties is 5.0-6.0 million germinating grains/ha. At this rate, it was not the maximum manifestation of individual indicators of the yield structural elements, but a combination of their average values was noted.

scholarly journals Resistance of hulless oats to smut fungi in Western Siberia

2019 ◽  
Vol 49 (3) ◽  
pp. 55-61
Author(s):  
O. A. Isachkova ◽  
B. L. Ganichev ◽  
A. O. Loginova
Keyword(s):  
Plant Genetic Resources ◽  
Growing Season ◽  
Smut Fungi ◽  
Lodging Resistance ◽  
New Variety ◽  
Naked Oat ◽  
Air Temperatures ◽  
World Collection ◽  
Dry Conditions ◽  
Naked Oats

The work presents the results of the study of naked oat samples from the world collection of The N.I. Vavilov All Russian Institute of Plant Genetic Resources and locally bred varieties for resistance to smut diseases. The research was carried out in 2008-2018 in the fi eld experiment against an artifi cial infection background. It was noted that during the growing season meteorological factors affected the extent of lesion of naked oats with the disease. A higher degree of lesion was observed in years with suffi cient and excessive moisture supply alongside increased air temperatures, whereas less damage was discovered under dry conditions. The results of phytopathological analysis of 230 collection samples of hulless oats in 2008–2011 revealed that mid-ripening specimens are more susceptible to damage by smut fungi (27.2% on average in the group). With an increase in the length of the growing season, susceptibility to the pathogen decreases. The degree of lesion in midlate samples was 26.5%, on average in the group, in late-ripening – 25.4%, in very late-ripening – 20.0%. During further study (2012–2018) of 35 resistant samples of this collection, a decrease in resistance to the pathogen was noted. Immune samples characterized by high panicle structure, large size of grain and lodging resistance were selected and included in the cross-breeding program to produce high-yielding genotypes resistant to local populations of smut fungi. As a result, a new variety of naked oats Ofenya was created, surpassing the standard recognized variety in terms of yield, technological, biochemical parameters, as well as resistant to lodging and smut.

scholarly journals Fındık Tarımında Durum Analizi, Makineli Hasat Gerekliliği ve Hasat Makinelerinin Sınıflandırılması

2018 ◽  
Vol 6 (9) ◽  
pp. 1141
Author(s):  
Faruk Güner ◽  
Mükrimin Şevket Güney
Keyword(s):  
Agricultural Land ◽  
Climatic Conditions ◽  
Production Costs ◽  
Mountainous Areas ◽  
Situation Analysis ◽  
Export Revenue ◽  
Very High

Hazelnut has an annual export revenue of approximately $2 billion as an important product for our country. About 65% of world’s hazelnut production is harvesting in Turkey. Due to the appropriate climatic conditions and availability of harvesting in the extreme sloppy and less qualified agricultural land of Ordu, Giresun and Trabzon, the protection and development of hazelnut-planted areas becomes among the priority issues. Due to the fact that machine farming has not been passed or not widespread in this region, production costs have increased such that they remain at very high levels when compared with other countries or other cities in Turkey. In this study, it has focused on hazelnut situation analysis, classification of harvesting machines, the necessity of mechanized harvesting, and sustainability of the hazelnut cultivation in less qualified sloppy mountainous areas.

scholarly journals Classification of Croatian winegrowing regions based on bioclimatic indices

2018 ◽  
Vol 50 ◽  
pp. 01032
Author(s):  
Marko Karoglan ◽  
Maja Telišman Prtenjak ◽  
Silvio Šimon ◽  
Mirela Osrečak ◽  
Marina Anić ◽  
...  
Keyword(s):  
Growing Season ◽  
Climatic Conditions ◽  
Bioclimatic Indices ◽  
Average Temperature ◽  
Meteorological Observations ◽  
Linear Trends ◽  
Cool Night

The aim of this work was to classifie vine growing regions of Croatia using bioclimatic indices. For the analysis of climatic conditions, linear trends of bioclimatic indices were determined using meteorological observations for all avaliable climatological stations located in vine growing regions of Croatia. Analysis were performed for two different climatological periods: 1961-1990 and 1988-2017. Four commonly used bioclimatic indices were determined: the Winkler index, the Huglin index, Cool night index and Growing season average temperature.

Experience of soybean cultivation in the Kaluga Department of Agricultural Machinery SC.

2020 ◽  
Author(s):  
N.V. Sergeev ◽  
◽  
A.Yu. Pivkin
Keyword(s):  
Seed Yield ◽  
Growing Season ◽  
Climatic Conditions ◽  
High Yield ◽  
Soybean Variety ◽  
Agricultural Machinery ◽  
Kaluga Region ◽  
High Seed Yield

The experience of cultivation of soybeans in SC "Agricultural machinery" of the Kaluga region on an area of 190 hectares shows that the soybean variety Alaska is sufficiently adapted to the soil and climatic conditions of this region, provides a high seed yield (up to 32 c / ha) and a high yield (up to 1344 kg / ha) relatively inexpensive protein. However, this variety has a long growing season (95-105 days) and therefore desiccation of crops is required for harvesting for seeds.

scholarly journals Relationship between Relative Maturity and Grain Yield of Maize (Zea mays L.) Hybrids in Northwest New Mexico for the 2003–2019 Period

Agriculture ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 290
Author(s):  
Koffi Djaman ◽  
Curtis Owen ◽  
Margaret M. West ◽  
Samuel Allen ◽  
Komlan Koudahe ◽  
...  
Keyword(s):  
New Mexico ◽  
Grain Yield ◽  
Sprinkler Irrigation ◽  
Growing Season ◽  
Climatic Conditions ◽  
Agricultural Science ◽  
Production Optimization ◽  
Science Center ◽  
Early Season ◽  
Climate Conditions

The highly variable weather under changing climate conditions affects the establishment and the cutoff of crop growing season and exposes crops to failure if producers choose non-adapted relative maturity that matches the characteristics of the crop growing season. This study aimed to determine the relationship between maize hybrid relative maturity and the grain yield and determine the relative maturity range that will sustain maize production in northwest New Mexico (NM). Different relative maturity maize hybrids were grown at the Agricultural Science Center at Farmington ((Latitude 36.69° North, Longitude 108.31° West, elevation 1720 m) from 2003 to 2019 under sprinkler irrigation. A total of 343 hybrids were grouped as early and full season hybrids according to their relative maturity that ranged from 93 to 119 and 64 hybrids with unknown relative maturity. The crops were grown under optimal management condition with no stress of any kind. The results showed non-significant increase in grain yield in early season hybrids and non-significant decrease in grain yield with relative maturity in full season hybrids. The relative maturity range of 100–110 obtained reasonable high grain yields and could be considered under the northwestern New Mexico climatic conditions. However, more research should target the evaluation of different planting date coupled with plant population density to determine the planting window for the early season and full season hybrids for the production optimization and sustainability.

scholarly journals Interpregnancy interval in lower versus higher human development index countries: a hypothesis about pregnancy spacing

2020 ◽  
Author(s):  
Margo S Harrison
Keyword(s):  
Regression Model ◽  
Human Development Index ◽  
Secondary Analysis ◽  
Middle Income Country ◽  
Income Country ◽  
Interpregnancy Interval ◽  
Middle Income ◽  
Pregnancy Spacing ◽  
The Usa ◽  
Very High

Abstract Background A secondary analysis was conducted of two separate datasets to observe the association between maternal age and interpregnancy interval (IPI). Methods The IPI in a middle-income country (Guatemala) was compared with that of a very-high-income country (USA) among women with two pregnancies. Results A regression model found that with each increasing year of age, the IPI increases by 1.26 months (p<0.001) in Guatemala. A regression model found that IPI decreased as women aged in the USA. Conclusions It is hypothesized that as countries progress in their development indices, women may delay childbearing, which may result in reduced IPI, as was the case in the USA compared with Guatemala in these datasets.

scholarly journals Effective Method for Diagnosing Continuous Welded Track Condition Based on Experimental Research

Energies ◽  
2021 ◽  
Vol 14 (10) ◽  
pp. 2889
Author(s):  
Jacek Kukulski ◽  
Piotr Gołębiowski ◽  
Jacek Makowski ◽  
Ilona Jacyna-Gołda ◽  
Jolanta Żak
Keyword(s):  
Experimental Research ◽  
Thermal Stresses ◽  
Longitudinal Force ◽  
Climatic Conditions ◽  
Traffic Load ◽  
Empirical Formulas ◽  
Correct Operation ◽  
Temperature Changes ◽  
Track Condition ◽  
Very High

The correct operation of the continuous welded track requires diagnosing its condition and preparation of track metrics requiring measurements of displacements of rail under operation. This is required as there are additional thermal stresses in the rails with values depending on the temperature changes of the rails. Therefore, the climatic conditions are important. This paper presents the original effective analytical method for diagnosing the condition of continuous welded track based on experimental research. The method allows for an appropriate repair or maintenance recommendation. In the experimental research, the authors considered track diagnostic conditions for two conditions: track under load and track without load. This paper presents empirical formulas for calculating rail temperature and longitudinal force based on ambient temperature, developed from long-term measurements. The formulas were developed for a track located on a straight section—both for a rail loaded and unloaded with a passing train under the following conditions: 60E1 rail, not on an engineering structure, conventional surface, wooden sleepers and very high train traffic load. The obtained results in the value of the correlation coefficient R2 ≥ 0.995 attest to very high accuracy of the calculations performed with the method proposed by the authors.

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